Tokushima University / Educator and Researcher Directory --- TANAKA, Hideji

Personal Web Page

https://researchmap.jp/read0170979 (researchmap)

Field of Study

○	Analytical Chemistry

Subject of Study

○	Development of novel flow-based analysis; amplitude modulated multiplexed flow analysis and feedback-based flow ratiometry., Speciation of phosphorus compounds in environment samples and determination of physicochemical properties of phosphorus compounds, Analysis of solid formulation and medical materials basen on spectrometries and chemometrics (Amplitude modulated multiplexed flow analysis, Feedback-based flow ratiometry, Flow injection analysis, Flow analysis, Automated analysis, Phosphorus chemistry, Environmental analysis)

Book / Paper

Book:

1.	Hideji TANAKA : 第18改正日本薬局方解説書, 株式会社廣川書店, Tokyo, Dec. 2021.
2.	Shigeru Sugiyama, Toshihiro Moriga, Masahiro Katoh, Kei-ichiro Murai, Toshihide Horikawa, Naohiro Shimoda, Akihiro Furube, Shin-ichiro Yanagiya, Masamichi Ogasawara, Takashi Yamamoto, Yoshitoshi Nakamura, Chikako Asada, Chizuru Sasaki, Hideji TANAKA, Masaki Takeuchi, Yutaka Taketani, Hisami Okumura, Masashi Masuda and Toshihiro Okamoto : 枯渇資源と技術開発, 徳島大学産業院出版部, Tokushima, Mar. 2020. (Summary) 2017年度から徳島大学重点クラスター``人類の恒久的繁栄に向けた対枯渇資源対応技術の開発''として活動した成果を，一般の読者にもわかりやすいように公表した徳島大学産業院出版部から始めて出版した書籍である．
3.	Hideji TANAKA and Masaki Takeuchi : わかりやすい機器分析学，第4版, 株式会社廣川書店, Tokyo, Mar. 2018.
4.	Hideji TANAKA : リンの事典, 朝倉書店, Tokyo, Nov. 2017.
5.	Hideji TANAKA and 近藤伸一 : 製剤化のサイエンス, Tokyo Kagaku Dozin C., Ltd., Tokyo, Oct. 2017.
6.	Hideji TANAKA and Masaki Takeuchi : クリスチャンExcelで解く分析化学, 丸善出版, Tokyo, Mar. 2017.
7.	Hideji TANAKA and Masaki Takeuchi : クリスチャン分析化学, 原書7版, 丸善出版, Tokyo, Jan. 2017.
8.	Hideji TANAKA and Masaki Takeuchi : スタンダード薬学シリーズII 2, 物理系薬学 III. 機器分析・構造決定, Tokyo Kagaku Dozin C., Ltd., Tokyo, Nov. 2016.
9.	Hideji TANAKA : 第17改正日本薬局方解説書, 株式会社廣川書店, Tokyo, Jul. 2016.
10.	Hideji TANAKA and Masaki Takeuchi : 基礎分析化学, 株式会社廣川書店, Tokyo, Jan. 2016.
11.	Hideji TANAKA and Saburo Shimabayashi : 製剤化のサイエンス，第2版, Tokyo Kagaku Dozin C., Ltd., Sep. 2012.
12.	Hideji TANAKA and Saburo Shimabayashi : 薬学用語辞典, Tokyo Kagaku Dozin C., Ltd., Tokyo, Mar. 2012.
13.	Hiroyuki Saito and Hideji TANAKA : 製剤への物理化学第2版, 株式会社廣川書店, Tokyo, Feb. 2012.
14.	Hideji TANAKA and Saburo Shimabayashi : 第16改正日本薬局方解説書, 株式会社廣川書店, Tokyo, Jun. 2011.
15.	Hideji TANAKA : 対策と演習物理化学, 株式会社廣川書店, Oct. 2009.
16.	Hideji TANAKA and Masaki Takeuchi : 薬学分析科学の最前線, (株)じほう, Tokyo, Mar. 2009.
17.	Saburo Shimabayashi, Hideji TANAKA and Satoru Ueno : 製剤への物理化学, 株式会社廣川書店, Tokyo, Aug. 2006. (Summary) ( ) ( ) (Keyword) physical chemistry / 製剤学 / 日本薬局方 / 初心者向き教科書
18.	Hideji TANAKA and Saburo Shimabayashi : 第15改正日本薬局方解説書, 株式会社廣川書店, Tokyo, Jun. 2006.
19.	Hideji TANAKA and Saburo Shimabayashi : 日本薬学会編薬学教科書シリーズ第7巻「製剤化のサイエンス」第I部製剤材料の性質，第2章分散系，SBO-5 界面の性質，SBO-6 界面活性剤の性質と種類，SBO-7 乳剤の型と性質, Tokyo Kagaku Dozin C., Ltd., Tokyo, Feb. 2006.
20.	Hideji TANAKA and Saburo Shimabayashi : 「分散技術大全集」，第10章分散状態の評価方法，第3節粒度分布(分担), (株)情報機構出版部, Tokyo, Jul. 2005. (Keyword) dispersity
21.	Hideji TANAKA and Saburo Shimabayashi : わかりやすい分析化学問題集, 株式会社廣川書店, Tokyo, Sep. 2003. (Summary) 溶液の分析化学，薬学分野の分析化学，JPにそった分析化学，初心者のための分析化学をめざしています． (Keyword) 容量分析 / HPC / 生体試料分析
22.	Hideji TANAKA and Saburo Shimabayashi : 第14改正日本薬局方第1追補解説書, 株式会社廣川書店, 東京都文京区, Mar. 2003. (Keyword) 導電率測定
23.	Hideji TANAKA and Saburo Shimabayashi : 第14改正日本薬局方解説書, 株式会社廣川書店, Tokyo, May 2001. (Keyword) 浸透圧 / 滴定終点検出 / 熱分析 / 粘度測定
24.	Hideji TANAKA and Hiroshi Chuman : 薬学の分析化学, 株式会社廣川書店, Tokyo, Feb. 2001.
25.	Hideji TANAKA : フローインジェクション分析研究懇談会創立15周年記念技術論文集, 日本分析化学会フローインジェクション分析研究懇談会, Okayama, Feb. 2000.
26.	Hideji TANAKA : Recent Research Developments in Pure & Applied Analytical Chemistry, --- On-line electrolytic generation of highly redox-reactive ions and its application to pretreatments in flow analysis ---, Transworld Research Network, Trivandrum, 1998.
27.	Hideji TANAKA and Kensaku Okamoto : Integurated Essentials 分析化学I, Nankodo, Tokyo, May 1997.

Academic Paper (Judged Full Paper):

1.	Selass Kebede Olbemo, Masaki Takeuchi and Hideji TANAKA : Digital-movie-based flow colorimetry for pH measurement with universal indicators, Talanta Open, Vol.9, Articlenumber100279, 2024. (Keyword) pH / Digital movie based colorimetry / Universal indicator / RGB / Hue (Tokushima University Institutional Repository) ● Metadata: 119007 (Link to Publication Site) ● Publication site (DOI): 10.1016/j.talo.2023.100279 (Link to Search Site for Scientific Articles) ● Search Scopus @ Elsevier (DOI): 10.1016/j.talo.2023.100279 (Tokushima University Institutional Repository: 119007, DOI: 10.1016/j.talo.2023.100279)
2.	Nishimura Madoka, Nakaya Yukari, Kashimoto Mao, Shoji Imai, Hideji TANAKA and Masaki Takeuchi : Determination of trace perchlorate in river water by ion chromatography with online matrix removal and sample concentration, Analytical Sciences, 2023. (Summary) This paper proposes a simple ion chromatographic approach to determine trace amounts of perchlorate in river water samples. Determination of the trace perchlorate by ion chromatography typically faces two challenges: interference by matrix ions such as chloride, nitrate, and sulfate in the samples and insufficient detection sensitivity. In the present study, online pretreatment of the samples with an OnGuard II Ba/Ag/H disposable sample pretreatment cartridge prevented the sulfate peak tailing from overlapping with the perchlorate peak on the chromatogram. In addition, the matrix removal enabled as large as 10 mL of sample to be loaded into a high exchange capacity anion concentrator, significantly improving perchlorate's detection sensitivity. The proposed approach achieved a detection limit (S/N = 3) of 0.046 µg L without using a costly mass spectrometer and successfully determined sub µg L levels of perchlorate in river water. (Tokushima University Institutional Repository) ● Metadata: 117910 (Link to Publication Site) ● Publication site (DOI): 10.1007/s44211-022-00262-9 (Link to Search Site for Scientific Articles) ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 36635453 ● Search Scopus @ Elsevier (PMID): 36635453 ● Search Scopus @ Elsevier (DOI): 10.1007/s44211-022-00262-9 (Tokushima University Institutional Repository: 117910, DOI: 10.1007/s44211-022-00262-9, PubMed: 36635453)
3.	Masaki Takeuchi, Shinya Nakagawa, Hiroki Watanabe, Hideji TANAKA, Takaharu Isobe, Hiroko Ogata and Hiroshi Okochi : Practical usefulness of observing the free tropospheric acidic gases with a parallel plate wet denuder coupled ion chromatograph, Atmospheric Environment: X, Vol.18, 100213, 2023. (Tokushima University Institutional Repository) ● Metadata: 118162 (Link to Publication Site) ● Publication site (DOI): 10.1016/j.aeaoa.2023.100213 (Link to Search Site for Scientific Articles) ● Search Scopus @ Elsevier (DOI): 10.1016/j.aeaoa.2023.100213 (Tokushima University Institutional Repository: 118162, DOI: 10.1016/j.aeaoa.2023.100213)
4.	Maria Shichijo, Kazumasa Okamoto, Toru Takahashi, Miharu Nomura, Shin-ichi Ohira, Hitoshi Mizuguchi, Hideji TANAKA and Masaki Takeuchi : Feedback standard addition method coupled flow injection analysis Validation by spectrophotometric determination of nitrite in seawater, Microchemical Journal, Vol.190, 108721, 2023. (Tokushima University Institutional Repository) ● Metadata: 118161 (Link to Publication Site) ● Publication site (DOI): 10.1016/j.microc.2023.108721 (Link to Search Site for Scientific Articles) ● Search Scopus @ Elsevier (DOI): 10.1016/j.microc.2023.108721 (Tokushima University Institutional Repository: 118161, DOI: 10.1016/j.microc.2023.108721)
5.	Naoya Kakiuchi, Masaki Takeuchi and Hideji TANAKA : Integrated continuous flow method with dual feedback-based controls for online analysis and process control, Analytical Sciences, Vol.39, 2023. (Summary) The concept of an integrated automated continuous flow method with dual feedback controls is presented for diluting a stock solution to provide a solution of a given concentration. The one control is used for the online process monitoring by a feedback-based flow ratiometry, where the product (the diluted liquid) is titrated through the rapid bidirectional scan of the product/reagent flow ratio. The feedback control limits the scanning to the necessary range to increase the analytical throughput. The other control is used for the process control to output the product with a preset concentration. The merging ratio of the stock solution and a solvent (diluent) is changed based on the information from the online analysis. The concept was verified by applying it to producing 0.1 mol dm CHCOOH. When the stock concentration was changed from 0.1 (reference concentration) to 0.3 and then 0.2 mol dm, the system searched for the suitable merging ratio and converged the output concentration to the reference value within 7.43 min with a relative error below 1.05%. The mean throughput rate of the process analysis was 11.2 titrations min. Successful results were also obtained for the 0.1 mol dm HCl production. The present concept could be the basis for process control with reduced wasteful output and effluent treatment with eco-friendly treated water discharge, resulting in the contribution to SDGs' goals of 6 (Clean water and sanitation), 9 (Industry, innovation and infrastructure), and 14 (Life below water). (Tokushima University Institutional Repository) ● Metadata: 119009 (Link to Publication Site) ● Publication site (DOI): 10.1007/s44211-022-00206-3 (Link to Search Site for Scientific Articles) ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 36273392 ● Search Scopus @ Elsevier (PMID): 36273392 ● Search Scopus @ Elsevier (DOI): 10.1007/s44211-022-00206-3 (Tokushima University Institutional Repository: 119009, DOI: 10.1007/s44211-022-00206-3, PubMed: 36273392)
6.	Maria Shichijoh, Ryosuke Niki, 大平慎一, Hitoshi Mizuguchi, Hideji TANAKA and Masaki Takeuchi : Interference of high degrees salt on spectrophotometric flow injection analysis Quantitative error of nitrite from schlieren effect and salt effect, Journal of Flow Injection Analysis, Vol.39, No.1, 3-7, 2022. (Keyword) nitrite / Griess reaction / spectrophotometry / FIA / seawater / schlieren effect / salt effect (Tokushima University Institutional Repository) ● Metadata: 118407 (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1050580295505945088 (Tokushima University Institutional Repository: 118407, CiNii: 1050580295505945088)
7.	Maria Shichijoh, Hideji TANAKA and Masaki Takeuchi : Noise Reduction Using Fourier Analysis in Microsoft Excel - Improvement of the Signal-to-Noise Ratio in Flow Injection Analysis -, Bunseki Kagaku, Vol.71, No.4.5, 283-287, 2022. (Summary) <p>In flow injection analysis (FIA), the baseline noise of the detection signal is an important parameter that determines the detection sensitivity. In this study, we applied the Fourier analysis/inverse Fourier analysis of Microsoft Excel to the detection signal of FIA to decrease the noise signal. The Fourier analysis of the detection signal for a sample of 0.06 mg L<sup>-1</sup> NO<sub>2</sub><sup>-</sup> showed many frequency components with amplitudes less than 0.04 mV. After removing these frequency components, inverse Fourier analysis was applied, and a smooth detection signal was obtained. Even with a sample of 2.50 mg L<sup>-1</sup> NO<sub>2</sub><sup>-</sup>, the noise signals were successfully removed using the Fourier/inverse Fourier analysis. The signal-to-noise ratio (<i>S/N</i>) of NO<sub>2</sub><sup>-</sup> was improved by ca. 15 times. We concluded that removing noise signals by Fourier analysis effectively improves the S/N of FIA.</p> (Keyword) noise reduction / <i>S/N</i> / FIA / nitrite / Griess reaction / fast Fourier transform / Microsoft Excel (Tokushima University Institutional Repository) ● Metadata: 116934 (Link to Publication Site) ● Publication site (DOI): 10.2116/bunsekikagaku.71.283 (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1390855267545422592 ● Search Scopus @ Elsevier (DOI): 10.2116/bunsekikagaku.71.283 (Tokushima University Institutional Repository: 116934, DOI: 10.2116/bunsekikagaku.71.283, CiNii: 1390855267545422592)
8.	Hideji TANAKA, Riona Wada, Masatoshi Yanase, Erina Tomiyama, Akira Ohbuchi, Keiro Higuchi and Masaki Takeuchi : Triangular-wave controlled amplitude-modulated flow analysis for extending dynamic range to saturated signals, Analytical Sciences, Vol.38, No.5, 795-802, 2022. (Summary) We have applied our amplitude-modulated flow analysis concept to extend the dynamic range to saturated analytical signals. Sample solution, the flow rate F of which is periodically varied with a triangular control signal V, is merged with a reagent solution delivered at a constant flow rate F. While the total flow rate F is kept constant, a diluent with F-(F + F) flow rate is aspirated from the third channel. The analytical signal V obtained downstream is processed by fast Fourier transform to obtain the amplitudes of the wave components in V. When the sample concentration C is low, V shows a triangular profile like V; the sum of the amplitudes ΣA is proportional to C. When C is high, V shows a trapezoidal profile because of the V saturation. A linear calibration curve can also be obtained for such saturated signals by plotting CΣA against C. The proof of the concept is validated by applying it to spectrophotometric determinations of a dye (Methylene Blue) and colored complexes of Fe - phenanthroline and Fe - Tiron. (Tokushima University Institutional Repository) ● Metadata: 116827 (Link to Publication Site) ● Publication site (DOI): 10.1007/s44211-022-00097-4 (Link to Search Site for Scientific Articles) ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 35298795 ● Search Scopus @ Elsevier (PMID): 35298795 ● Search Scopus @ Elsevier (DOI): 10.1007/s44211-022-00097-4 (Tokushima University Institutional Repository: 116827, DOI: 10.1007/s44211-022-00097-4, PubMed: 35298795)
9.	Naoya Kakiuchi, Junya Ochiai, Masaki Takeuchi and Hideji TANAKA : Inner product of RGB unit vectors for detecting color transition: application to feedback-based flow ratiometric titration, Analytical Sciences, Vol.38, No.3, 623-626, 2022. (Summary) The inner product (IP) of RGB unit vectors' approach for detecting color transition has further been applied to a feedback-based flow ratiometric titration, including nonaqueous titration. While the flow ratio of titrand/titrant containing an indicator was varying, the video image of the merged solution was taken with a digital microscope downstream. The indicator's color was converted to an RGB unit vector. The change in IP between vectors was used for determining the equivalence point. The concept was successfully applied to the determinations of drug and vinegar samples with reasonable throughput rate (> 18 s/titration) and precision (RSD < 4.4%). (Keyword) Color / Feedback (Tokushima University Institutional Repository) ● Metadata: 116826 (Link to Publication Site) ● Publication site (DOI): 10.1007/s44211-022-00075-w (Link to Search Site for Scientific Articles) ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 35286653 ● Search Scopus @ Elsevier (PMID): 35286653 ● Search Scopus @ Elsevier (DOI): 10.1007/s44211-022-00075-w (Tokushima University Institutional Repository: 116826, DOI: 10.1007/s44211-022-00075-w, PubMed: 35286653)
10.	Haruka Tanaka, Makoto Namikawa, Naoya Tomiyasu, Hideji TANAKA and Masaki Takeuchi : Parallel plate wet denuder coupled ammonia transfer device-conductivity detector for near-real-time monitoring of gaseous ammonia, Talanta Open, Vol.5, 100091, 2022. (Tokushima University Institutional Repository) ● Metadata: 116936 (Link to Publication Site) ● Publication site (DOI): 10.1016/j.talo.2022.100091 (Link to Search Site for Scientific Articles) ● Summary page in Scopus @ Elsevier: 2-s2.0-85123766769 (Tokushima University Institutional Repository: 116936, DOI: 10.1016/j.talo.2022.100091, Elsevier: Scopus)
11.	Masaki Takeuchi, Naoya Tomiyasu, Makoto Namikawa, Hideji TANAKA, Kei Toda, Naoya Katsumi and Hiroshi Okochi : On-line analysis of free-tropospheric water-soluble acidic gases and particulate anions on the summit of Mt. Fuji, Japan, Atmospheric Environment, Vol.273, 118977, 2022. (Tokushima University Institutional Repository) ● Metadata: 116935 (Link to Publication Site) ● Publication site (DOI): 10.1016/j.atmosenv.2022.118977 (Link to Search Site for Scientific Articles) ● Summary page in Scopus @ Elsevier: 2-s2.0-85123708407 (Tokushima University Institutional Repository: 116935, DOI: 10.1016/j.atmosenv.2022.118977, Elsevier: Scopus)
12.	Hideji TANAKA, Kurokawa Yohei, Masaki Takeuchi and Akira Ohbuchi : Amplitude modulated flow analysis for speciationProof of concept by quantification of Fe2+ and Fe3+ ions, Talanta Open, Vol.3, Article100031, 2021. (Keyword) flow analysis / flow rate modulation / fast Fourier transform / speciation / amplitude modulation (Tokushima University Institutional Repository) ● Metadata: 116472 (Link to Publication Site) ● Publication site (DOI): 10.1016/j.talo.2021.100031 (Link to Search Site for Scientific Articles) ● Search Scopus @ Elsevier (DOI): 10.1016/j.talo.2021.100031 (Tokushima University Institutional Repository: 116472, DOI: 10.1016/j.talo.2021.100031)
13.	Kakiuchi Naoya, Ochiai Junya, Masaki Takeuchi and Hideji TANAKA : Inner Product of RGB Unit Vectors for Simple and Versatile Detection of Color Transition, Analytical Sciences, Vol.37, No.1, 3-5, 2021. (Tokushima University Institutional Repository) ● Metadata: 116828 (Link to Publication Site) ● Publication site (DOI): 10.2116/analsci.20C015 (Link to Search Site for Scientific Articles) ● Search Scopus @ Elsevier (DOI): 10.2116/analsci.20C015 (Tokushima University Institutional Repository: 116828, DOI: 10.2116/analsci.20C015)
14.	Kaho Maeda, Haruka Tanaka, Riona Wada, 大河内博, 戸田敬, Hideji TANAKA and Masaki Takeuchi : On-line collector for water-soluble atmospheric particulate matter compatible with a parallel plate wet denuder, Earozoru Kenkyu, Vol.36, No.4, 273-278, 2021. (Tokushima University Institutional Repository) ● Metadata: 116866 (Link to Publication Site) ● Publication site (DOI): 10.11203/jar.36.273 (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1390290493076984064 ● Search Scopus @ Elsevier (DOI): 10.11203/jar.36.273 (Tokushima University Institutional Repository: 116866, DOI: 10.11203/jar.36.273, CiNii: 1390290493076984064)
15.	Tohru Takahashi, Mayu Watanabe, Yuta Ohtsuka, Hideji TANAKA and Masaki Takeuchi : Rapid flow injection analysis by partial least squares regression -Validation by a spectrophotometric determination of iron with 1,10-phenanthroline-, Bunseki Kagaku, Vol.70, No.7,8, 451-457, 2021. (Tokushima University Institutional Repository) ● Metadata: 116865 (Link to Publication Site) ● Publication site (DOI): 10.2116/bunsekikagaku.70.451 (Link to Search Site for Scientific Articles) ● Summary page in Scopus @ Elsevier: 2-s2.0-85117135483 (Tokushima University Institutional Repository: 116865, DOI: 10.2116/bunsekikagaku.70.451, Elsevier: Scopus)
16.	Hiroki Watanabe, Jun Sugiura, Hideji TANAKA, Petr Kubáň and Masaki Takeuchi : Miniaturized low-pressure ion-exchange module and its application to an acidic eluent generator for open tubular ion chromatography, Journal of Flow Injection Analysis, Vol.38, No.1, 11-14, 2021. (Summary) We describe a miniaturized eluent generator (MEG), which can be integrated into open tubular capillary column ion chromatography (OTCC-IC). The MEG consists of one central eluent channel and two feed acid chambers, with each phase isolated by a cation-exchange membrane (CEM) and an anion-exchange membrane (AEM). Pure water flowed through the central eluent channel while acid solution (HA) was fed to both chambers. Applying the electric field to the MEG, H+ and A- simultaneously and respectively through the CEM and AEM to form HA in the central channel. The MEG successfully produced tartaric acid and 2,6-pyridinedicarboxylic acid as the eluent for cation OTCC-IC. The gradient elution improved the peak resolution and analytical window for five common cations (Na+, NH4+, K+, Ca2+, Mg2+). (Keyword) Ion-exchange membrane / electrolysis / ion chromatography / eluent generation / open tubular capillary column (Tokushima University Institutional Repository) ● Metadata: 116864 (Link to Publication Site) ● Publication site (DOI): 10.24688/jfia.38.1_11 (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1390852359475937664 ● Search Scopus @ Elsevier (DOI): 10.24688/jfia.38.1_11 (Tokushima University Institutional Repository: 116864, DOI: 10.24688/jfia.38.1_11, CiNii: 1390852359475937664)
17.	Masaki Takeuchi, Makoto Namikawa, Kazumasa Okamoto, Tatsuya Oda, Haruka Tanaka, 大河内博, 戸田敬, 三浦和彦 and Hideji TANAKA : Online Analysis of Water-soluble Acidic Gases and Anions in Particles at the Southeastern Foot of Mt. Fuji, Bunseki Kagaku, Vol.70, No.1-2, 65-69, 2021. (Summary) <p>During the summer of 2018, we monitored the concentrations of water-soluble acid gases and particulate anions at the southeastern foot (1284 m a.s.l.) of Mt. Fuji, Japan, using gas/particle-ion chromatographs. All samples analyzed contained quantifiable levels of anions. The average concentrations of acid gas and particulate anion concentrations were, respectively, 1.10±0.37 nmol m<sup>-3</sup> for HCl, 3.49±1.72 nmol m<sup>-3</sup> for HONO, 1.23±0.59 nmol m<sup>-3</sup> for HNO<sub>3</sub>, 0.33±0.20 nmol m<sup>-3</sup> for SO<sub>2</sub>, 3.61±3.69 nmol m<sup>-3</sup> for Cl<sup>-</sup>, 0.65±0.22 nmol m<sup>-3</sup> for NO<sub>2</sub><sup>-</sup>, 4.29±2.98 nmol m<sup>-3</sup> for NO<sub>3</sub><sup>-</sup>, and 4.47±3.57 nmol m<sup>-3</sup> for SO<sub>4</sub><sup>2-</sup>. We found that the concentration of soluble acidic gases increased during the daytime, while no characteristic diurnal patterns were observed in the particulate anions.</p> (Keyword) air pollutant / denuder / particle collector / ion chromatograph / online analysis / Mt. Fuji (Tokushima University Institutional Repository) ● Metadata: 116423 (Link to Publication Site) ● Publication site (DOI): 10.2116/bunsekikagaku.70.65 (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1390569070681097600 ● Search Scopus @ Elsevier (DOI): 10.2116/bunsekikagaku.70.65 (Tokushima University Institutional Repository: 116423, DOI: 10.2116/bunsekikagaku.70.65, CiNii: 1390569070681097600)
18.	Yuta Otsuka, Akira Ito, Masaki Takeuchi, Suvra Pal and Hideji TANAKA : Predictive evaluation of powder X-ray diffractogram of pharmaceutical formulation powders based on infrared spectroscopy, Bio-Medical Materials and Engineering, Vol.31, No.5, 307-317, 2020. (Summary) To ensure quality and stability, monitoring systems are recommended to analyze pharmaceutical manufacturing processes. This study was performed to predict powder X-ray diffraction (PXRD) patterns of formulation powders through attenuated total reflectance (ATR)-infrared (IR) spectroscopy in a nondestructive manner along with chemometrics. Caffeine anhydrate, acetaminophen, and lactose monohydrate were grinded at six weight ratios. The six sample groups were evaluated using ATR-IR spectroscopy and PXRD analysis. Partial least squares models were constructed to predict the PXRD intensities of the samples from the ATR-IR spectra. The prediction accuracy on the prepared PLS regression models was as high as R2 = 0.993. Linear relationships were obtained between the prediction data set and reference PXRD intensity at each degree. 2D PLS regression coefficient analysis enabled the analysis of the correlation between PXRD patterns and IR spectra. (Link to Publication Site) ● Publication site (DOI): 10.3233/BME-206003 (Link to Search Site for Scientific Articles) ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 32894235 ● Search Scopus @ Elsevier (PMID): 32894235 ● Search Scopus @ Elsevier (DOI): 10.3233/BME-206003 (DOI: 10.3233/BME-206003, PubMed: 32894235)
19.	Kazumasa Okamoto, Serika Okabe, Hideji TANAKA and Masaki Takeuchi : 軸方向分散を抑えた陽イオン交換モジュールとイオンクロマトグラフィーへの応用, Journal of Flow Injection Analysis, Vol.37, No.1, 3-8, 2020. (Tokushima University Institutional Repository) ● Metadata: 115180 (Link to Publication Site) ● Publication site (DOI): 10.24688/jfia.37.1_3 (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1390003825204586112 ● Search Scopus @ Elsevier (DOI): 10.24688/jfia.37.1_3 (Tokushima University Institutional Repository: 115180, DOI: 10.24688/jfia.37.1_3, CiNii: 1390003825204586112)
20.	Ochiai Junya, Oka Sawako, Hirasaka Tomoko, Tomiyama Erina, Kubo Hiroya, Okamoto Kazumasa, Masaki Takeuchi and Hideji TANAKA : Introduction of Air-Segmentation Approach to Flow Titration by Feedback-based and Subsequent Fixed Triangular Wave-controlled Flow Ratiometry, Analytical Sciences, Vol.36, No.6, 703-708, 2020. (Summary) An air-segmentation approach has been introduced to a feedback-based and subsequent fixed triangular wave-controlled flow ratiometry to suppress axial dispersion in flow titration. The flow rate of a base solution containing an indicator is linearly varied with a control signal, V, supplied by a computer. The solution is merged with an acid solution under a constant total flow rate. Air is introduced to the merged solution in order to segment the solution with air bubbles. Both phases are led to a UV/Vis detector without phase separation. Air signals are removed by signal processing. The effect of the lag time between the merging of solutions upstream and the sensing of the corresponding signal downstream is offset by feedback-based upward and downward V scans, and thus the V that gives the equivalence composition is determined. Subsequently, fixed triangular wave control is applied to a narrower V range with a higher scan rate to enhance the throughput rate (maximally 11.8 titrations/min). Air-segmentation has been found to be effective to reduce axial dispersion and to preserve the titrand/titrant composition upon their just being merged. Consequently, the applicable range is extended especially to lower titrand concentration. The proposed method has been successfully applied to various acid-base titrations, including the nonaqueous titration of the Japanese Pharmacopoeia drug. (Keyword) flow titration / flow ratiometry / air-segmentation / feedback control (Tokushima University Institutional Repository) ● Metadata: 116829 (Link to Publication Site) ● Publication site (DOI): 10.2116/analsci.19P401 (Link to Search Site for Scientific Articles) ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 31866608 ● Summary page in Scopus @ Elsevier: 2-s2.0-85086346875 (Tokushima University Institutional Repository: 116829, DOI: 10.2116/analsci.19P401, PubMed: 31866608, Elsevier: Scopus)
21.	Yuta Otsuka, Hiroki Watanabe, Hideji TANAKA and Masaki Takeuchi : Quantification of overlapped peaks with partial least squares regression: Open tubular ion chromatography for sodium and ammonium ions, Journal of Flow Injection Analysis, Vol.37, No.2, 73-77, 2020. (Tokushima University Institutional Repository) ● Metadata: 116767 (Link to Publication Site) ● Publication site (DOI): 10.24688/jfia.37.2_73 (Link to Search Site for Scientific Articles) ● Search Scopus @ Elsevier (DOI): 10.24688/jfia.37.2_73 (Tokushima University Institutional Repository: 116767, DOI: 10.24688/jfia.37.2_73)
22.	Yuta Otsuka, Akira Ito, Masaki Takeuchi, Tetsuo Sasaki and Hideji TANAKA : Effects of temperature on terahertz spectra of caffeine/oxalic acid 2:1 cocrystal and its solid-state density functional theory, Journal of Drug Delivery Science and Technology, Vol.56, No.7, 101215, 2020. (Link to Publication Site) ● Publication site (DOI): 10.1016/j.jddst.2019.101215 (Link to Search Site for Scientific Articles) ● Search Scopus @ Elsevier (DOI): 10.1016/j.jddst.2019.101215 (DOI: 10.1016/j.jddst.2019.101215)
23.	Aiko Miyazaki, Naoya Kakiuchi, Kazumasa Okamoto, Masaki Takeuchi and Hideji TANAKA : Unprecedented High Throughput Titration by Feedback-Based and Subsequent Fixed Triangular Wave-Controlled Flow Ratiometry and Its Application to Quantification of Japanese Pharmacopoeia Drugs, Journal of Flow Injection Analysis, Vol.36, No.2, 97-100, 2019. (Tokushima University Institutional Repository) ● Metadata: 115181 (Link to Publication Site) ● Publication site (DOI): 10.24688/jfia.36.2_97 (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1390846609815113344 ● Search Scopus @ Elsevier (DOI): 10.24688/jfia.36.2_97 (Tokushima University Institutional Repository: 115181, DOI: 10.24688/jfia.36.2_97, CiNii: 1390846609815113344)
24.	Akira Ito, Yuta Otsuka, Masaki Takeuchi and Hideji TANAKA : Mechanochemical synthesis of zinc chloroapatite and evaluation of its crystallinity by attenuated total reflection - infrared spectroscopy and principal component analysis, Phosphorus Research Bulletin, Vol.35, 16-22, 2019. (Link to Publication Site) ● Publication site (DOI): 10.3363/prb.35.16 (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1390001288156525952 ● Search Scopus @ Elsevier (DOI): 10.3363/prb.35.16 (DOI: 10.3363/prb.35.16, CiNii: 1390001288156525952)
25.	Otsuka Yuta, Ito Akira, Takahashi Toru, Matsumura Saki, Masaki Takeuchi and Hideji TANAKA : Bilayer tablet dissolution kinetics based on a degassing cyclic flow UV-vis spectroscopy with chemometrics, Chemical & Pharmaceutical Bulletin, Vol.67, No.4, 361-366, 2019. (Summary) Dissolution kinetics of a bilayer direct compress tablet was evaluated by using degassing cyclic flow UV-visible (Vis) spectroscopy with chemometrics. The model bilayer nicotinamide (NA)-pyridoxine hydrochloride (PH) 100.0 mg tablets were prepared via the dual compress method. The fast diffusion layer of the bilayer tablet contained nicotinamide, microcrystal cellulose, beta-lactose, magnesium stearate, and croscarmellose sodium. The slow release layer contained pyridoxine hydrochloride and carnauba wax. The monolayer direct compress tablets were prepared as dual ingredient (API)s formulation tablets. The degassing cyclic flow UV-Vis spectroscopy dissolution test was carried out using the prepared tablets. The dissolution test conditions were as follows: time, 60 min; temperature, 37°C; paddle method, 50 rpm, and UV-Vis spectra measurement 1 time/min. The UV-Vis spectra of the flow solution were measured in the range of 240-380 nm. API concentration was predicted by partial least squares (PLS) regression models based on UV-Vis spectra. The dissolution kinetics of the bilayer and monolayer tablets were evaluated based on the UV-Vis spectra with the predicted API concentration profile. The degassing flow system could prevent air bubbles in the flow cell at 1800 min. Therefore, simultaneous determination of NA and PH concentration based on the PLS regression was suggested to have high accuracy. PLS regression has advantages over the conventional λ absorbance method of simultaneous determination. We found that the kinetics of the separated bilayer tablet can be evaluated by the same kinetic analysis method used for the single layer model tablet. (Keyword) Drug Compounding / Drug Liberation / Hydrogen-Ion Concentration / Kinetics / Least-Squares Analysis / Models, Chemical / Niacinamide / Pyridoxine / Solubility / Spectrophotometry / Tablets / Temperature (Link to Publication Site) ● Publication site (DOI): 10.1248/cpb.c18-00867 (Link to Search Site for Scientific Articles) ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 30930440 ● Summary page in Scopus @ Elsevier: 2-s2.0-85063988866 (DOI: 10.1248/cpb.c18-00867, PubMed: 30930440, Elsevier: Scopus)
26.	Otsuka Yuta, Ito Akira, Pal Suva, Mitome Hajime, Masaki Takeuchi and Hideji TANAKA : Prediction of differential scanning calorimetry curve of theophylline direct compression model tablet using Raman spectra, Journal of Drug Delivery Science and Technology, Vol.49, 254-259, 2019. (Link to Publication Site) ● Publication site (DOI): 10.1016/j.jddst.2018.11.003 (Link to Search Site for Scientific Articles) ● Summary page in Scopus @ Elsevier: 2-s2.0-85057888846 (DOI: 10.1016/j.jddst.2018.11.003, Elsevier: Scopus)
27.	Otsuka Yuta, Ito Akira, Masaki Takeuchi and Hideji TANAKA : Effect of amino acid on calcium phosphate phase transformation: attenuated total reflectance-infrared spectroscopy and chemometrics, Colloid and Polymer Science, Vol.297, No.1, 155-163, 2019. (Link to Publication Site) ● Publication site (DOI): 10.1007/s00396-018-4438-0 (Link to Search Site for Scientific Articles) ● Summary page in Scopus @ Elsevier: 2-s2.0-85058508010 (DOI: 10.1007/s00396-018-4438-0, Elsevier: Scopus)
28.	Masaki Takeuchi, Miharu Nomura, Maria Shichijo and Hideji TANAKA : Flow injection analysis of nitrite nitrogen in seawater introducing standard addition method, Journal of Flow Injection Analysis, Vol.35, No.2, 59-61, 2018. (Keyword) Nitrite / seawater / flow injection analysis / standard addition method (Tokushima University Institutional Repository) ● Metadata: 114307 (Link to Publication Site) ● Publication site (DOI): 10.24688/jfia.35.2_59 (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1390845702323137536 ● Search Scopus @ Elsevier (DOI): 10.24688/jfia.35.2_59 (Tokushima University Institutional Repository: 114307, DOI: 10.24688/jfia.35.2_59, CiNii: 1390845702323137536)
29.	Sumitomo Takuya, Osaki Mari, Takeshi Ogusu, Masaki Takeuchi and Hideji TANAKA : Internal Standard-Amplitude Modulated Multiplexed Flow Analysis, Analytical Sciences, Vol.33, No.12, 1363-1368, 2017. (Summary) A new concept of flow analysis, internal standard-amplitude modulated multiplexed flow analysis, is proposed. A proof of concept was verified by applying it to the determination of ferrous ion (Fe) by 1,10-phenanthroline (o-Phen) spectrophotometry. The flow rates of sample solutions containing Methylene Blue (MB) as an internal standard substance were sinusoidally varied at different frequencies. The solutions were merged with a color reagent (o-Phen) solution, while the total flow rate was held constant. Downstream, analytical signals were monitored at the maximum absorption wavelengths of Fe-o-Phen complex and of MB (510 and 644 nm, respectively). The signals were respectively analyzed by fast Fourier transform. The concentrations of the analytes in respective samples were simultaneously determined from the amplitudes of the corresponding wave components. The precision, linearity of the calibration curve, limit of detection and robustness against deliberate fluctuation in flow rate were greatly improved by introducing the internal standard method. Good recoveries of around 100% were obtained for Fe spiked into real water samples. (Tokushima University Institutional Repository) ● Metadata: 116830 (Link to Publication Site) ● Publication site (DOI): 10.2116/analsci.33.1363 (Link to Search Site for Scientific Articles) ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 29225225 ● Summary page in Scopus @ Elsevier: 2-s2.0-85037551193 (Tokushima University Institutional Repository: 116830, DOI: 10.2116/analsci.33.1363, PubMed: 29225225, Elsevier: Scopus)
30.	Otsuka Yuta, Ito Akira, Masaki Takeuchi and Hideji TANAKA : Dry Mechanochemical Synthesis of Caffeine/Oxalic Acid Cocrystals and Their Evaluation by Powder X-Ray Diffraction and Chemometrics, Journal of Pharmaceutical Sciences, Vol.106, No.12, 3458-3464, 2017. (Summary) We report the effects of dry mechanochemical synthesis conditions on the crystallization of caffeine (CA) and oxalic acid (OX) 2:1 cocrystal. CA anhydrate and OX dihydrate were grinded at various temperatures, rotation speeds, and grinding time. The cocrystal was also synthesized by an organic solvent evaporation method, as a reference. The produced samples were measured by a powder X-ray diffraction (PXRD) analysis. The PXRD spectra suggest that the grinded cocrystal has a lower crystallinity than the evaporated one. The diffractograms for the cocrystals synthesized by 2 kinds of methods were further evaluated by multivariate curve resolution-alternating least squares method. Sources of the mathematical models constructed were assigned to the cocrystal and unreacted mixture of CA and OX dihydrate. The present approach is concluded to be useful for the improvement of pharmaceutical property because cocrystallization is closely relating to the solubility characteristics, bioavailability, stability, and so on of drugs. (Keyword) Caffeine / Crystallization / Oxalic Acid / Powder Diffraction / Powders / Solubility / Solvents / Spectroscopy, Fourier Transform Infrared / Temperature / X-Ray Diffraction (Link to Publication Site) ● Publication site (DOI): 10.1016/j.xphs.2017.07.025 (Link to Search Site for Scientific Articles) ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 28797789 ● Summary page in Scopus @ Elsevier: 2-s2.0-85028578193 (DOI: 10.1016/j.xphs.2017.07.025, PubMed: 28797789, Elsevier: Scopus)
31.	Akira Ito, Yuta Otsuka, Masaki Takeuchi and Hideji TANAKA : Mechanochemical synthesis of chloroapatite and its characterization by powder X-ray diffractometory and attenuated total reflection - infrared spectroscopy, Colloid and Polymer Science, Vol.295, No.10, 2011-2018, 2017. (Link to Publication Site) ● Publication site (DOI): 10.1007/s00396-017-4177-7 (Link to Search Site for Scientific Articles) ● Summary page in Scopus @ Elsevier: 2-s2.0-85028296087 (DOI: 10.1007/s00396-017-4177-7, Elsevier: Scopus)
32.	Naoya Kakiuchi, Aiko Miyazaki, Akihiro Fujikawa, Masaki Takeuchi and Hideji TANAKA : High Throughput Titration Based on Variable and Fixed Triangular Wave Controlled Flow Radiometry with LED-Photodiode Detector, Journal of Flow Injection Analysis, Vol.34, No.1, 11-14, 2017. (Tokushima University Institutional Repository) ● Metadata: 118038 (Tokushima University Institutional Repository: 118038)
33.	Masaki Takeuchi, Yuki Miyazaki, Hideji TANAKA, Takaharu Isobe, Hiroshi Okochi and Hiroko Ogata : High Time-Resolution Monitoring of Free-Tropospheric Sulfur Dioxide and Nitric Acid at the Summit of Mt. Fuji, Japan, Water, Air, and Soil Pollution, Vol.228, No.9, Article:325, 2017. (Tokushima University Institutional Repository) ● Metadata: 114025 (Link to Publication Site) ● Publication site (DOI): 10.1007/s11270-017-3514-2 (Link to Search Site for Scientific Articles) ● Summary page in Scopus @ Elsevier: 2-s2.0-85027489437 (Tokushima University Institutional Repository: 114025, DOI: 10.1007/s11270-017-3514-2, Elsevier: Scopus)
34.	白水好美, 田中勝, Hideji TANAKA and Masaki Takeuchi : クリーンルーム雰囲気中のアンモニア及びアミンガスを監視するウエットデニューダ方式の自動モニタ, Bunseki Kagaku, Vol.66, No.7, 503-508, 2017. (Tokushima University Institutional Repository) ● Metadata: 114295 (Link to Publication Site) ● Publication site (DOI): 10.2116/bunsekikagaku.66.503 (Link to Search Site for Scientific Articles) ● Search Scopus @ Elsevier (DOI): 10.2116/bunsekikagaku.66.503 (Tokushima University Institutional Repository: 114295, DOI: 10.2116/bunsekikagaku.66.503)
35.	Otsuka Yuta, Akira Ito, Matsumura Saki, Masaki Takeuchi, Pal Suvra and Hideji TANAKA : Quantification of pharmaceutical compounds based on powder X-ray diffraction with chemometrics, Chemical & Pharmaceutical Bulletin, Vol.64, No.8, 1129-1135, 2016. (Summary) We propose an approach for the simultaneous determination of multiple components in pharmaceutical mixed powder based on powder X-ray diffraction (PXRD) method coupled with chemometrics. Caffeine anhydrate, acetaminophen and lactose monohydrate were mixed at various ratios. The samples were analyzed by PXRD method in the ranges of 2=5.00-30.0 and 35.0-45.0 degrees. Obtained diffractograms were analyzed by conventional peak intensity method, multi curve resolution (MCR)-alternating least squares (ALS) method and partial least squares (PLS) method. Constructed PLS models can most accurately predict the concentrations among different methods used. Each regression vector of PLS correlates not only to the compound of interest but also to the coexisting compounds. The combination of PXRD and PLS methods is concluded to be powerful approach for analyzing multi components in pharmaceutical formulations. (Keyword) Acetaminophen / Caffeine / Lactose / Powder Diffraction / Powders (Link to Publication Site) ● Publication site (DOI): 10.1248/cpb.c16-00151 (Link to Search Site for Scientific Articles) ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 27477651 ● Summary page in Scopus @ Elsevier: 2-s2.0-84982690210 (DOI: 10.1248/cpb.c16-00151, PubMed: 27477651, Elsevier: Scopus)
36.	Naoya Tomiyasu, Makoto Namikawa, Hideji TANAKA and Masaki Takeuchi : Online Analysis of Water-soluble Acidic Gases and Anions in PM2.5 at Tokushima City in Winter of 2015, Bunseki Kagaku, Vol.65, No.8, 425-432, 2016. (Summary) This paper describes a simultaneous analytical system used for atmospheric water-soluble acidic gases and anions in PM<sub>2.5</sub>. The analytical system, consisting mainly of a parallel-plate wet denuder, mist chamber-hydrophobic filter based particle collector, and ion chromatograph provides automatically two acidic gas and two PM<sub>2.5</sub> data with in one hour. We applied the system to the continuous measurement of air pollutants at Tokushima, Japan in the winter of 2015, and obtained meaningful data in 97.9 % of the sampling period. The average acidic gas concentration and anion concentration in the PM<sub>2.5</sub> were, respectively, 4.85±3.08 nmol m<sup>-3</sup> for HCl, 22.19±18.47 nmol m<sup>-3</sup> for HONO, 9.54±2.52 nmol m<sup>-3</sup> for HNO<sub>3</sub>, 101.57±71.99 nmol m<sup>-3</sup> for SO<sub>2</sub>, 3.78±6.48 nmol m<sup>-3</sup> for Cl<sup>-</sup>, 3.37±1.99 nmol m<sup>-3</sup> for NO<sub>2</sub><sup>-</sup>, 25.16±31.49 nmol m<sup>-3</sup> for NO<sub>3</sub><sup>-</sup>, and 92.61±55.33 nmol m<sup>-3</sup> for SO<sub>4</sub><sup>2-</sup>. Characteristic diurnal patterns were observed in several gases. The concentration of HCl fluctuated with changes in the temperature with a 2-hour time-lag. The concentration of HONO peaked in the morning and middle of the night, and its behavior showed a similar pattern of NO<sub>2</sub> concentration. Backward trajectory analysis suggested that a high concentration of SO<sub>2</sub> that was emitted from China was transported to the sampling site, Tokushima, Japan. (Keyword) online analysis / acidic gas / PM2.5 / anion / Tokushima (Tokushima University Institutional Repository) ● Metadata: 114294 (Link to Publication Site) ● Publication site (DOI): 10.2116/bunsekikagaku.65.425 (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1390282679638240128 ● Summary page in Scopus @ Elsevier: 2-s2.0-84988431133 (Tokushima University Institutional Repository: 114294, DOI: 10.2116/bunsekikagaku.65.425, CiNii: 1390282679638240128, Elsevier: Scopus)
37.	Hiroya Kubo, Azumi Miyazaki, Kazunori Kuritani, Masaki Takeuchi and Hideji TANAKA : Cobalt(III) Pretreatment for Total Phosphorus Determination, Phosphorus Research Bulletin, Vol.30, No.1, 26-29, 2015. (Summary) Abstract: A fast and simple pretreatment method of phosphorus compounds using Co<SUP>3+</SUP> has been studied for the spectrophotometric determination of total phosphorus in water samples. Sample was mixed with a pretreatment solution (0.05 mol dm<SUP>-3</SUP> CoSO<SUB>4</SUB> in 1 mol dm<SUP>-3</SUP> H<SUB>2</SUB>SO<SUB>4</SUB>) in an electrolytic cell at the volume ratio of 4:1. Highly reactive Co<SUP>3+</SUP> was continuously generated through the electrolysis of Co<SUP>2+</SUP> during the pretreatment. Aliquot of the solution was injected to the system of flow injection - Molybdenum Blue spectrophotometry in order to evaluate phosphate ion (PO<SUB>4</SUB><SUP>3-</SUP>) produced. Organic phosphorus compounds are completely decomposed to PO<SUB>4</SUB><SUP>3-</SUP> within 2 min by Co<SUP>3+</SUP> under moderate condition (70°C). The Co<SUP>3+</SUP> is also effective for the acid hydrolysis of polyphosphates; diphosphate and tripolyphosphate are converted to PO<SUB>4</SUB><SUP>3-</SUP> within 8 min through the pretreatment. Possible mechanisms of the pretreatment are discussed based on the strong oxidizing activity and the Lewis acid nature of Co<SUP>3+</SUP>. (Keyword) Determination of total phosphorus / polyphosphate / organic phosphorus / Co<SUP>3+</SUP> pretreatment / flow injection analysis (Link to Publication Site) ● Publication site (DOI): 10.3363/prb.30.26 (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1390001205286918272 ● Search Scopus @ Elsevier (DOI): 10.3363/prb.30.26 (DOI: 10.3363/prb.30.26, CiNii: 1390001205286918272)
38.	Yuta Otsuka, Akira Ito, Saki Matsumura, Masaki Takeuchi and Hideji TANAKA : Effect of hydroxypropyl cellulosse and hydroxypropyl methylcellulose on carbamazepine polymorphic transformation; attenuated total reflectance-infrared spectroscopy and chemiinformatics analysis, Colloid and Polymer Science, Vol.293, No.12, 3471-3478, 2015. (Link to Publication Site) ● Publication site (DOI): 10.1007/s00396-015-3698-1 (Link to Search Site for Scientific Articles) ● Search Scopus @ Elsevier (DOI): 10.1007/s00396-015-3698-1 (DOI: 10.1007/s00396-015-3698-1)
39.	Yuta Otsuka, Masahiro Yamamoto, Hideji TANAKA and Makoto Otsuka : Predictive Evaluation of Pharmaceutical Properties of Direct Compression Tablets Containing Theophyline Anhydrate by Near-Infrared Spectroscopy, Bio-Medical Materials and Engineering, Vol.25, No.3, 223-236, 2015. (Link to Publication Site) ● Publication site (DOI): 10.3233/BME-151278 (Link to Search Site for Scientific Articles) ● Summary page in Scopus @ Elsevier: 2-s2.0-84932629575 (DOI: 10.3233/BME-151278, Elsevier: Scopus)
40.	Koji Inui, Haruka Yoshida, Masaki Takeuchi and Hideji TANAKA : Application of Air Segmented Amplitude Modulated Multiplexed Flow Analysis with Software-Based Phase Recognition to the Determination of Ammonium Ion in Water Samples, Journal of Flow Injection Analysis, Vol.32, No.1, 5-8, 2015. (Keyword) Amplitude modulated multiplexed flow analysis / ammonium ion / Indophenol Blue / air segmentation / software-based phase recognition / fast Fourier transform (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1390282679631543424 (CiNii: 1390282679631543424)
41.	Yuta Otsuka, Masaki Takeuchi, Makoto Otsuka, Besim Ben-Nissan, David Grossin and Hideji TANAKA : Effect of carbon dioxide on self-setting apatite cement formation from tetracalcium phosphate and dicalcium phosphate dihydrate; ATR-IR and chemoinformatics analysis, Colloid and Polymer Science, Vol.293, No.10, 2781-2788, 2015. (Link to Publication Site) ● Publication site (DOI): 10.1007/s00396-015-3616-6 (Link to Search Site for Scientific Articles) ● Summary page in Scopus @ Elsevier: 2-s2.0-84942295907 (DOI: 10.1007/s00396-015-3616-6, Elsevier: Scopus)
42.	Masaki Takeuchi, Naoyuki Miki, Kiichi Ishimine and Hideji TANAKA : Nafion Membrane Tube-Based On-Line Concentrator. Application to Urinary Orotic Acid Determined by Suppressed Ion Chromatography, Journal of Flow Injection Analysis, Vol.32, No.2, 97-100, 2015. (Summary) This paper describes the performance of suppressed ion chromatography coupled with a Nafion membrane tube-based on-line concentration technique for the determination of urinary orotic acid, which serves as a biochemical indicator for ornithine transcarbamylase deficiency. After the separation of the analyte by the chromatography, it is concentrated while the eluent flows through the Nafion membrane tube, meanwhile, a nitrogen gas flows outside the tube to remove the solvent. The peak of orotic acid was increased with increasing sample residence time, nitrogen gas flow rate, and concentration temperature. With the concentrator, the detection sensibility was improved, and the lower detection limit was obtained compared to that without the concentrator. The optimized system has successfully been applied to the determination of orotic acid in real urinary samples. (Link to Publication Site) ● Publication site (DOI): 10.24688/jfia.32.2_97 (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1390282679632311552 ● Search Scopus @ Elsevier (DOI): 10.24688/jfia.32.2_97 (DOI: 10.24688/jfia.32.2_97, CiNii: 1390282679632311552)
43.	Takeshi Ogusu, Katsuya Uchimoto, Masaki Takeuchi and Hideji TANAKA : Air Segmented-Amplitude Modulated Multiplexed Flow Analysis with Software-Based Phase Recognition. Determination of Phosphate Ion, Talanta, Vol.118, 123-128, 2014. (Summary) Amplitude modulated multiplexed flow analysis (AMMFA) has been improved by introducing air segmentation and software-based phase recognition. Sample solutions, the flow rates of which are respectively varied at different frequencies, are merged. Air is introduced to the merged liquid stream in order to limit the dispersion of analytes within each liquid segment separated by air bubbles. The stream is led to a detector with no physical deaeration. Air signals are distinguished from liquid signals through the analysis of detector output signals, and are suppressed down to the level of liquid signals. Resulting signals are smoothed based on moving average computation. Thus processed signals are analyzed by fast Fourier transform. The analytes in the samples are respectively determined from the amplitudes of the corresponding wave components obtained. The developed system has been applied to the simultaneous determinations of phosphate ions in water samples by a Malachite Green method. The linearity of the analytical curve (0.0-31.0 mol dm(-3)) is good (r(2)>0.999) and the detection limit (3.3 ) at the modulation period of 30s is 0.52 mol dm(-3). Good recoveries around 100% have been obtained for phosphate ions spiked into real water samples. (Keyword) Air / Electrons / Flow Injection Analysis / Phase Transition / Phosphates / Software / Solutions / Spectroscopy, Fourier Transform Infrared (Link to Publication Site) ● Publication site (DOI): 10.1016/j.talanta.2013.10.001 (Link to Search Site for Scientific Articles) ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 24274279 ● Summary page in Scopus @ Elsevier: 2-s2.0-84887002712 (DOI: 10.1016/j.talanta.2013.10.001, PubMed: 24274279, Elsevier: Scopus)
44.	Masaki Takeuchi, Yuki Miyazaki, Hiromichi Tsunoda and Hideji TANAKA : Atmospheric Acid Gases in Tokushima, Japan, Monitored with Parallel Plate Wet Denuder Coupled Ion Chromatograph, Analytical Sciences, Vol.29, No.1, 165-168, 2013. (Summary) During the summer of 2011 and winter of 2012, we continuously measured trace acid gas concentrations in Tokushima, Japan, using a parallel plate wet denuder coupled ion chromatograph. The average concentrations of hydrochloric acid (HCl), nitrous acid (HONO), nitric acid (HNO(3)), and sulfur dioxide (SO(2)) were, respectively, 0.54, 1.20, 1.17, and 3.22 g m(-3) in the summer, and 0.09, 1.06, 0.46, and 5.11 g m(-3) in the winter. In the summer, concentrations of all the acid gases increased after sunrise and showed a strong diurnal pattern with daytime maxima and nighttime minima, but the time at which concentration levels began to increase and the pace of increase differed among the acid gases. The concentration of HONO increased sharply immediately after sunrise, while concentrations of the other three gases began increasing about one and half hours later. SO(2) showed the fastest rate of increase, followed by HNO(3) and HCl. These differences were likely attributable to the formation processes of gaseous substances. (Keyword) Acids, Noncarboxylic / Air / Air Pollutants / Chromatography / Environmental Monitoring / Gases / Hydrochloric Acid / Japan / Nitric Acid / Nitrous Acid / Seasons / Sulfur Dioxide (Link to Publication Site) ● Publication site (DOI): 10.2116/analsci.29.165 (Link to Search Site for Scientific Articles) ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 23303105 ● Search Scopus @ Elsevier (PMID): 23303105 ● Search Scopus @ Elsevier (DOI): 10.2116/analsci.29.165 (DOI: 10.2116/analsci.29.165, PubMed: 23303105)
45.	Masaki Takeuchi, Masato Izumi, Mizuki Watanabe, Hideji TANAKA, Tomoaki Obata and Kei Toda : Surface Modified Annular Wet Denuder for the Collection of Water-Soluble Trace Gases, Analytical Methods, Vol.5, No.21, 6071-6075, 2013. (Link to Publication Site) ● Publication site (DOI): 10.1039/c3ay40680f (Link to Search Site for Scientific Articles) ● Summary page in Scopus @ Elsevier: 2-s2.0-84885621334 (DOI: 10.1039/c3ay40680f, Elsevier: Scopus)
46.	Masaki Takeuchi, Kaoru Yoshioka, Yusuke Toyama, Ai Kagami and Hideji TANAKA : On-Line Measurement of Perchlorate in Atmospheric Aerosol Based on Ion Chromatograph Coupled with Particle Collector and Post-Column Concentrator, Talanta, Vol.97, 527-532, 2012. (Summary) An automated analysis system has been developed for measuring perchlorate concentration in atmospheric aerosol. The perchlorate in aerosol sample, which has been collected with water mist in a hydrophobic filter/mist chamber based particle collector, is continuously preconcentrated. The matrix ions such as sulfate are subsequently removed from the preconcentrator. The remaining perchlorate is then analyzed on-line with an ion chromatograph in conjunction with a Nafion membrane tube based post-column concentrator. The sensitivity is increased by a factor of 7.7 with the post-column concentration technique. The proposed system has been successfully operated at Tokushima, Japan. The limit of detection is 0.35 ng/m(3) for 3 h sampling cycle. The perchlorate concentration in the atmospheric aerosol averaged 1.01±1.75 ng/m(3) (n=12). (Link to Publication Site) ● Publication site (DOI): 10.1016/j.talanta.2012.05.009 (Link to Search Site for Scientific Articles) ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 22841118 ● Search Scopus @ Elsevier (PMID): 22841118 ● Search Scopus @ Elsevier (DOI): 10.1016/j.talanta.2012.05.009 (DOI: 10.1016/j.talanta.2012.05.009, PubMed: 22841118)
47.	Haruka Yoshida, Koji Inui, Masaki Takeuchi and Hideji TANAKA : Simultaneous Determination of Nitrite and Nitrate Ions by Air-Segmented Amplitude-Modulated Multiplexed Flow Analysis, Analytical Sciences, Vol.28, No.5, 523-525, 2012. (Summary) The concept of amplitude-modulated multiplexed flow analysis has been extended to the simultaneous determination of multiple analytes in a sample. A sample solution containing nitrite and nitrate ions is delivered from two channels, but the flow rates are varied at different frequencies. One of the channels has a reduction column for converting nitrate ions to nitrite ions. Downstream, the absorbance of the diazo-coupling product is monitored after the merging of both solutions with a Griess reagent. The signal is analyzed by a fast Fourier transform (FFT) in real time. From the thus-obtained amplitude, a µmol dm(-3) level of the ions can be determined. The introduction of air bubbles is effective to reduce any axial dispersion, and hence to improve the sensitivity. (Keyword) Air / Flow Injection Analysis / Ions / Nitrates / Nitrites (Link to Publication Site) ● Publication site (DOI): 10.2116/analsci.28.523 (Link to Search Site for Scientific Articles) ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 22687934 ● CiNii @ National Institute of Informatics (CRID): 1390282679238745472 ● Search Scopus @ Elsevier (PMID): 22687934 ● Search Scopus @ Elsevier (DOI): 10.2116/analsci.28.523 (DOI: 10.2116/analsci.28.523, PubMed: 22687934, CiNii: 1390282679238745472)
48.	Masaki Takeuchi, Hiromichi Tsunoda, Hideji TANAKA and Yoshimi Shiramizu : Parallel-Plate Wet Denuder Coupled Ion Chromatograph for Near-Real-Time Detection of Trace Acidic Gases in Clean Room Air, Analytical Sciences, Vol.27, No.8, 805-810, 2011. (Summary) This paper describes the performance of our automated acidic (CH(3)COOH, HCOOH, HCl, HNO(2), SO(2), and HNO(3)) gases monitor utilizing a parallel-plate wet denuder (PPWD). The PPWD quantitatively collects gaseous contaminants at a high sample flow rate (8 dm(3) min(-1)) compared to the conventional methods used in a clean room. Rapid response to any variability in the sample concentration enables near-real-time monitoring. In the developed monitor, the analyte collected with the PPWD is pumped into one of two preconcentration columns for 15 min, and determined by means of ion chromatography. While one preconcentration column is used for chromatographic separation, the other is used for loading the sample solution. The system allows continuous monitoring of the common acidic gases in an advanced semiconductor manufacturing clean room. (Keyword) Acetic Acid / Air / Chromatography, Gas / Formic Acids / Gases / Hydrochloric Acid / Nitric Acid / Nitrous Acid / Sulfur Dioxide / Wettability (Link to Publication Site) ● Publication site (DOI): 10.2116/analsci.27.805 (Link to Search Site for Scientific Articles) ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 21828917 ● Search Scopus @ Elsevier (PMID): 21828917 ● Search Scopus @ Elsevier (DOI): 10.2116/analsci.27.805 (DOI: 10.2116/analsci.27.805, PubMed: 21828917)
49.	Inui Koji, Uemura Takechi, Ogusu Takechi, Masaki Takeuchi and Hideji TANAKA : Air-Segmented Amplitude-Modulated multiplexed Flow Analysis, Analytical Sciences, Vol.27, No.3, 305-308, 2011. (Summary) Air-segmentation is applied to amplitude-modulated multiplexed flow analysis, which we proposed recently. Sample solutions, the flow rates of which are varied periodically, are merged with reagent and/or diluent solution. The merged stream is segmented by air-bubbles and, downstream, its absorbance is measured after deaeration. The analytes in the samples are quantified from the amplitudes of the respective wave components in the absorbance. The proposed method is applied to the determinations of a food dye, phosphate ions and nitrite ions. The air-segmentation is effective for limiting amplitude damping through the axial dispersion, resulting in an improvement in sensitivity. This effect is more pronounced at shorter control periods and longer flow path lengths. (Keyword) Air / Flow Injection Analysis / Indicators and Reagents / Nitrites / Phosphates / Rhodamines / Solutions / Spectrophotometry / Water (Link to Publication Site) ● Publication site (DOI): 10.2116/analsci.27.305 (Link to Search Site for Scientific Articles) ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 21415514 ● Search Scopus @ Elsevier (PMID): 21415514 ● Search Scopus @ Elsevier (DOI): 10.2116/analsci.27.305 (DOI: 10.2116/analsci.27.305, PubMed: 21415514)
50.	Takeshi Uemura, Takeshi Ogusu, Masaki Takeuchi and Hideji TANAKA : Spectrophotometric Determination of Trace Phosphate Ion by Amplitude Modulated Flow Analysis Coupled with Malachite Green Method, Analytical Sciences, Vol.26, No.7, 797-801, 2010. (Summary) An amplitude-modulated flow analysis coupled with lock-in detection is proposed for the determination of trace phosphate. The flow rate F(S) of sample solution is varied in response to a periodic signal V(c) of alternating waveform. A coloring reagent solution (ammonium molybdate + Malachite Green) is delivered at a constant flow rate F(R). Under the constant total flow rate F(T), both solutions are merged with a diluent (water). Phosphate ion in the sample reacts with molybdate and then with Malachite Green to form green ion pairs in acidic media. Downstream, the absorbance of the mixed solution is measured at 625 nm. The output voltage V(d) from the detector is sent to a lock-in amplifier, where the wave component of V(d) that has the same frequency as that of V(c) is distinguished from background signals. Phosphate ion can be determined from the amplitude of the component thus extracted. The calibration curve is linear (r(2) > 0.998) and the limit of detection (3.3sigma) is 0.17 micromol dm(-3). Compared with a conventional flow-based method with no modulation, the present method is less susceptible to the baseline drift due mainly to the adsorption of the ion-pair on the optical window, because the quantification is based not on the absorbance itself but on the amplitude of the absorbance. Good recoveries around 100% are obtained for the phosphate ions spiked into real water samples. (Keyword) Flow Injection Analysis / Phosphates / Rosaniline Dyes / Spectrophotometry / Water (Link to Publication Site) ● Publication site (DOI): 10.2116/analsci.26.797 (Link to Search Site for Scientific Articles) ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 20631442 ● Search Scopus @ Elsevier (PMID): 20631442 ● Search Scopus @ Elsevier (DOI): 10.2116/analsci.26.797 (DOI: 10.2116/analsci.26.797, PubMed: 20631442)
51.	Yohei Kurokawa, Masaki Takeuchi and Hideji TANAKA : Analytical Parameters for Amplitude Modulated Multiplexed Flow Analysis, Analytical Sciences, Vol.26, No.7, 791-796, 2010. (Summary) Analytical conditions of amplitude-modulated multiplexed flow analysis, the basic concept of which was recently proposed by our group, are investigated for higher sample throughput rate. The performance of the improved system is evaluated by applying it to the determination of chloride ions. The flow rates of two sample solutions are independently varied in accordance with sinusoidal voltage signals, each having different frequency. The solutions are merged with a reagent solution and/or a diluent, while the total flow rate is held constant. Downstream, the analytical signal V(d) is monitored with a spectrophotometer. The V(d) shows a complicated profile resulting from amplitude modulated and multiplexed information on the two samples. The V(d) can, however, be deconvoluted to the contribution of each sample through fast Fourier transform (FFT). The amplitudes of the separated wave components are closely related to the concentrations of the analytes in the samples. By moving the window for FFT analysis with time, a temporal profile of the amplitudes can be obtained in real-time. Analytical conditions such as modulation period and system configuration have been optimized using aqueous solutions of Malachite Green (MG). Adequate amplitudes are obtained at the period of as low as 5 s. At this period, the calibration curve for the MG concentration of 0-30 micromol dm(-3) has enough linearity (r(2) = 0.999) and the limit of detection (3.3sigma) is 1.3 micromol dm(-3); the relative standard deviation of repeated measurements (C(MG) = 15 micromol dm(-3), n = 10) is 2.4%. The developed system has been applied to the determination of chloride ions by a mercury(II) thiocyanate method. The system can adequately follow the changes in analyte concentration. The recoveries of chloride ion spiked in real water samples (river and tap water) are satisfactory, around 100%. (Keyword) Chlorides / Flow Injection Analysis / Fourier Analysis / Spectrophotometry / Water (Link to Publication Site) ● Publication site (DOI): 10.2116/analsci.26.791 (Link to Search Site for Scientific Articles) ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 20631441 ● Search Scopus @ Elsevier (PMID): 20631441 ● Search Scopus @ Elsevier (DOI): 10.2116/analsci.26.791 (DOI: 10.2116/analsci.26.791, PubMed: 20631441)
52.	Tursunjan Aydan, Masaki Takeuchi and Hideji TANAKA : Spectrophotometric Determination of Anionic Sufactant Based on Ion-pair Formation with Methylene Blue in Riversed Flow Injection Mode, Journal of Flow Injection Analysis, Vol.26, No.2, 133-137, 2009. (Keyword) Reversed flow injection analysis / online extraction / anionic surfactant / Methylene Blue / ion-pair (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1390282763046403968 (CiNii: 1390282763046403968)
53.	Hideji TANAKA, Xiangli Liu, Hossam Hefesha and Alfred Fahra : Lipophilicity Measurement of Drugs by Reversed Phase HPLC over Wide pH Range Using an Alkaline-Resistant Silica-Based Stationary Phase, XBridgeTM Shield RP18, Chemical & Pharmaceutical Bulletin, Vol.56, No.10, 1417-1422, 2008. (Summary) We propose a reversed phase HPLC (RP-HPLC) with an alkaline-resistant silica-based stationary phase, XBridge Shield RP(18), for the determination of the lipophilicity of drugs with diverse chemical nature ranging from acidic to basic. A set of 40 model compounds with well-defined solvatochromic parameters was selected to allow a broad distribution of structural properties. The chromatographic results showed that the lipophilicity index log k(w) obtained with XBridge Shield RP(18) was well correlated with experimental log P(oct) values (r(2)=0.96). Linear solvation free-energy relationship (LSER) analyses revealed that the retention mechanism of the stationary phase and 1-octanol/water partitioning were controlled by almost the same balance of intermolecular forces (hydrophobicity as expressed by the van der Waals volume V(w), H-bond acceptor basicity beta, and dipolarity/polarizability pi*). The results showed that XBridge Shield RP(18) phase overcomes the shortcomings of the silica-based stationary phases, the application of which to lipophilicity measurements had been limited to neutral and acidic compounds. (Keyword) 1-Octanol / Algorithms / Alkalies / Chemistry, Physical / Chromatography, High Pressure Liquid / Hydrogen-Ion Concentration / Lipids / Organosilicon Compounds / Pharmaceutical Preparations / Physicochemical Phenomena / Silicon Dioxide / Solvents / Spectrophotometry, Ultraviolet / Water (Link to Publication Site) ● Publication site (DOI): 10.1248/cpb.56.1417 (Link to Search Site for Scientific Articles) ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 18827381 ● Search Scopus @ Elsevier (PMID): 18827381 ● Search Scopus @ Elsevier (DOI): 10.1248/cpb.56.1417 (DOI: 10.1248/cpb.56.1417, PubMed: 18827381)
54.	Tursunjan Aydan, Ayumi Kitagawa, Masaki Takeuchi and Hideji TANAKA : Application of Feedback-Based Flow Ratiometry to Simultaneous Determination of Calcium and Magnesium Ions by Chelatometry Using Photometric and Potentiometric Detectors, Journal of Flow Injection Analysis, Vol.25, No.1, 65-68, 2008. (Keyword) Flow Analysis (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1390564238029845760 (CiNii: 1390564238029845760)
55.	Hideji TANAKA, Mima Takuto, Masaki Takeuchi and Hitoshi Iida : Amplitude Modulated multiplexed flow analysis, Talanta, Vol.77, No.2, 576-580, 2008. (Keyword) Flow Analysis (Link to Publication Site) ● Publication site (DOI): 10.1016/j.talanta.2008.03.016 (Link to Search Site for Scientific Articles) ● Search Scopus @ Elsevier (DOI): 10.1016/j.talanta.2008.03.016 (DOI: 10.1016/j.talanta.2008.03.016)
56.	Hideji TANAKA and Tsutomu Baba : High throughput continuous titration based on a flow ratiometry controlled with feedback-based variable triangular waves and subsequent fixed triangular waves, Talanta, Vol.67, No.4, 848-853, 2005. (Summary) We propose a new approach for high-throughput continuous titration based on a flow ratiometry. The method was applied to potentiometric titrations of acids and bases. A base solution, the flow rate F(B) of which was varied in response to controller output voltage V(c), was merged with an acid solution under constant total (acid+base) flow rate. Downstream, the pH of the mixed solution was measured with a flow-through glass electrode. Initially, V(c), and thus F(B) was increased linearly. At the instant the equivalence point (EP) was sensed, the ramp direction of V(c) was reversed from upward to downward. The direction was reversed to upward when EP was sensed again. Such the feedback-based operation gives a triangular waveform of V(c), because there is a delay corresponding mainly to the transit time of merged solutions to reach the sensor. The value of V(c) that gives EP composition, V(E), was estimated by averaging the most recent maximum and minimum values of V(c). Next, fixed triangular waves of V(c) was used to control F(B). The amplitude and the scan rate of the waves were fixed narrower and faster, respectively, than those in the feedback-based operation in order to improve the throughput rate. The EP can be located as long as the scan range covers V(E). These automated processes limited the titration to just the narrow range around EP, and thus realized extremely high throughput rate of maximally 17.6 titrations per minute (=3.4s per titration) at R.S.D.=0.35%. (Keyword) Flow ratiometry / Continuous titration / Feedback-based control / Triangular wave control / High throughput titration (Link to Publication Site) ● Publication site (DOI): 10.1016/j.talanta.2005.04.007 (Link to Search Site for Scientific Articles) ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 18970249 ● Search Scopus @ Elsevier (PMID): 18970249 ● Search Scopus @ Elsevier (DOI): 10.1016/j.talanta.2005.04.007 (DOI: 10.1016/j.talanta.2005.04.007, PubMed: 18970249)
57.	Xiangli Liu, Hideji TANAKA, Aiko Yamauchi, Bernard Testa and Hiroshi Chuman : Determination of lipophilicity by reversed-phase high-performance liquid chromatography: Influence of 1-octanol in the mobile phase, Journal of Chromatography. A, Vol.1091, No.1-2, 51-59, 2005. (Summary) Lipophilicity was evaluated using a novel RP-HPLC stationary phase (Discovery-RP-Amide-C16) with and without 1-octanol added to the mobile phase. A set of 46 drugs and flavonoids characterized by a broad structural diversity and a wide log Poct range (-0.69 to 5.70) was selected for this study. This set consists of neutral solutes and solutes with acidic or ampholytic functionalities which were maintained neutral at pH 2.5 or 4. In our conditions, the addition of 1-octanol in the mobile phase proved a key factor to derive a lipophilicity index log k(w) highly correlated with log Poct for all investigated solutes. 1-Octanol improved the correlation between log Poct and log k(w) mainly by influencing the retention behavior of the solutes with log Poct values below +3. This study brings additional evidence that under proper experimental conditions of stationary and mobile phases, RP-HPLC is a very useful method to obtain log Poct values. (Keyword) Lipophilicity / log Poct / log kw / Mobile phase / Stationary phase / 1-Octanol / LC (Link to Publication Site) ● Publication site (DOI): 10.1016/j.chroma.2005.07.029 (Link to Search Site for Scientific Articles) ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 16395792 ● Search Scopus @ Elsevier (PMID): 16395792 ● Search Scopus @ Elsevier (DOI): 10.1016/j.chroma.2005.07.029 (DOI: 10.1016/j.chroma.2005.07.029, PubMed: 16395792)
58.	Hideji TANAKA and Arata Shogenji : Determination of acid dissociation constants by feedback-based flow ratiometry constituted of ramp and hold modes, Journal of Flow Injection Analysis, Vol.22, No.1, 19-24, 2005. (Keyword) Flow titration / Feedback-based control / Dissociation constant / Acidity constant (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1390564238068135936 (CiNii: 1390564238068135936)
59.	Hideji TANAKA and Tsutomu Baba : High-Throughput Photometric Titrimetry Based on a Feedback-based and Subsequent Fixed Triangular Wave-controlled Flow Ratiometry, Analytical Sciences, Vol.21, No.6, 615-618, 2005. (Summary) The principle of flow ratiometry for high-throughput titration, which we recently proposed for potentiometric titration, was extended to photometric titration. The flow rate (FB) of a base solution containing an acid-base indicator was linearly varied in response to a control voltage (Vc) generated from a computer. With the total (acid + base) flow rate (FT) being kept constant, the base solution was merged with an acid solution, which was aspirated to the confluence point at a flow rate of FT - FB. Downstream, the relative transmittance of the mixed solution was measured at the maximum absorption wavelength of the base form of the indicator. Initially, a feedback-based control was applied, where the scan direction of Vc was reversed from upward to downward, and vice versa, whenever the transition of the indicator at the equivalence point (EP) was sensed. Next, the scan range of V. was further limited to the range just around EP by using fixed triangular waves. These processes avoided scanning in a range of no interest. Thus, an unprecedentedly high throughput rate (maximally 34 titrations per minute, corresponding to 1.76 s per titration) was realized with reasonable precision (RSD < 0.5%). (Keyword) Algorithms / Hydrogen-Ion Concentration / Indicators and Reagents / Photometry / Potentiometry (Link to Publication Site) ● Publication site (DOI): 10.2116/analsci.21.615 (Link to Search Site for Scientific Articles) ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 15984193 ● Search Scopus @ Elsevier (PMID): 15984193 ● Search Scopus @ Elsevier (DOI): 10.2116/analsci.21.615 (DOI: 10.2116/analsci.21.615, PubMed: 15984193)
60.	Hideji TANAKA, Xiangli Liu, Daichi Kawabata, Hiroshi Chuman and Chisako Yamagami : Application of a Stepwise Flow Ratiometry without Phase Separation to the Determination of the Chloroform/Water Distribution Coefficients of Volatile Diazines, Chemical & Pharmaceutical Bulletin, Vol.53, No.4, 374-377, 2005. (Summary) The chloroform/water distribution coefficients (K(D)) of sixteen diazine compounds were determined by a stepwise flow ratiometry. An aqueous solution of analyte was delivered and merged with chloroform. The flow rate ratio of both the phases was varied stepwise under a constant total (chloroform+aqueous) flow rate. The analyte was extracted to chloroform while both the phases, which were segmented by each other, were passing through an extraction coil. The segmented stream was then led to a UV/Vis detector directly without phase-separation. The absorbance of the chloroform and aqueous phases (A(o) and A(a), respectively) was each measured at the maximum absorption wavelength of the analyte. The plots of A(-1) against R(f), (AR(f))(-1) against R(f)(-1), and AR(f) against A gave straight lines, where A was A(o), A(a) or the sum of them (A(S)). The K(D) of the analyte was calculated from the slopes and intercepts of the plots. The log K(D) values obtained for the analytes (-0.5-1.4) were agreed well with the values measured by a shake-flask method. The present method is simple, rapid (5 min/determination) and applicable to the volatile compounds with reasonable precision (standard deviation of log K(D)<0.07). (Keyword) stepwise flow ratiometry / distribution coefficient / volatile compound / diazine / partition coefficient (Link to Publication Site) ● Publication site (DOI): 10.1248/cpb.53.374 (Link to Search Site for Scientific Articles) ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 15802834 ● Search Scopus @ Elsevier (PMID): 15802834 ● Search Scopus @ Elsevier (DOI): 10.1248/cpb.53.374 (DOI: 10.1248/cpb.53.374, PubMed: 15802834)
61.	Hideji TANAKA, Takahiro Tachibana, Risa Oda and Purnendu K. Dasgupta : Determination of acid dissociation constants based on continuous titration by feedback-based flow ratiometry, Talanta, Vol.64, No.5, 1169-1174, 2004. (Summary) We propose a method for the determination of acid dissociation constants based on the rapid detection of the equivalence point (EP) by feedback-based flow ratiometry and the subsequent estimation of the half equivalence point (EP(1/2)). The titrant (e.g., NaOH) flow rate F(B) was varied in response to a control voltage V(c) from a controller, while the titrand (e.g., CH(3)COOH) flow rate F(A) was held constant. The pH of the mixed solution was monitored downstream from the confluence point of the solutions following a knotted tubular mixer. Initially, V(c) was increased linearly. At the instance the detector sensed EP, the ramp direction of V(c) changed downward. The pH increased further because of the lag time between the mixing of solutions and the sensing of pH. Following the pH maximum, the pH decreased. The EP was sensed again in this downward scan. The V(c) that gives EP(1/2) was computed from the V(c) just at the time of the EP detection. The V(c) was held constant at this level for 18s, and the plateau pH value thus obtained was taken to be the pK(a) of the analyte subject to activity corrections. Studies on the dependence of the pK(a) on the ionic strength or dielectric constant of the solution were conducted in an automated fashion by delivering NaCl solution or acetonitrile through an additional channel. Satisfactory results were obtained with good throughput (53s per determination) and precision (R.S.D. approximately 0.3%) for various acids. (Keyword) Flow ratiometry / Flow titration / Feedback-based control / Dissociation constant / Acidity constant (Link to Publication Site) ● Publication site (DOI): 10.1016/j.talanta.2004.04.007 (Link to Search Site for Scientific Articles) ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 18969725 ● Search Scopus @ Elsevier (PMID): 18969725 ● Search Scopus @ Elsevier (DOI): 10.1016/j.talanta.2004.04.007 (DOI: 10.1016/j.talanta.2004.04.007, PubMed: 18969725)
62.	Hiroshi Chuman, Mori Atsushi, Hideji TANAKA, Yamagami Chisako and Toshio Fujita : Analyses of the Partition Coefficient, Log P, using Ab Initio MO Parameter and Accessible Surface Area of Solute Molecules, Journal of Pharmaceutical Sciences, Vol.93, No.11, 2681-2697, 2004. (Summary) To analyze the log P(sol/w) values (sol: n-octanol or chloroform, w: water) in the framework of the molecular orbital (MO) procedure, we selected solute descriptors such as the solvation energy difference between aqueous and organic solvent phases and the "surface" area of solute molecules to which water molecules are accessible. The solvation energy of solute molecules in their minimum free-energy conformation was calculated using the ab initio self-consistent reaction field-MO method with the conductor-like screening model. The experimentally measured log P(sol/w) value of various solutes except for those of amphiprotics was shown to be analyzable reasonably well by the MO model with additional descriptors for the hydrogen-bonding patterns in the solute-solvent interactions. (Keyword) 1-Octanol / Solubility / Solutions / Solvents / Structure-Activity Relationship / Surface Properties / Water (Link to Publication Site) ● Publication site (DOI): 10.1002/jps.20168 (Link to Search Site for Scientific Articles) ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 15389676 ● Search Scopus @ Elsevier (PMID): 15389676 ● Search Scopus @ Elsevier (DOI): 10.1002/jps.20168 (DOI: 10.1002/jps.20168, PubMed: 15389676)
63.	Hideji TANAKA and Takahiro Tachibana : Determination of Acid/Base Dissociation Constants Based on a Rapid Detection of the Half Equivalence Point by Feedback-Based Flow Ratiometry, Analytical Sciences, Vol.20, No.6, 979-981, 2004. (Summary) Acid dissociation constants (Ka) were determined through the rapid detection of the half equivalence point (EP1/2) based on a feedback-based flow ratiometry. A titrand, delivered at a constant flow rate, was merged with a titrant, whose flow rate was varied in response to a control voltage (Vc) from a controller. Downstream, the pH of the mixed solution was monitored. Initially, Vc was increased linearly. At the instance that the detector sensed EP1/2, the ramp direction of Vc changed downward. When EP1/2 was sensed again, Vc was increased again. This series of process was repeated automatically. The pH at EP1/2 was regarded as being pKa of the analyte after an activity correction. Satisfactory results were obtained for different acids in various matrices with good precision (RSD approximately 3%) at a throughput rate of 56 s/determination. (Link to Publication Site) ● Publication site (DOI): 10.2116/analsci.20.979 (Link to Search Site for Scientific Articles) ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 15228123 ● CiNii @ National Institute of Informatics (CRID): 1390001204258346624 ● Search Scopus @ Elsevier (PMID): 15228123 ● Search Scopus @ Elsevier (DOI): 10.2116/analsci.20.979 (DOI: 10.2116/analsci.20.979, PubMed: 15228123, CiNii: 1390001204258346624)
64.	Hideji TANAKA : Determination of distribution coefficients by stepwise flow ratiometry/spectrophotometric detection without phase separation, Bunseki Kagaku, Vol.53, No.4, 359-362, 2004. (Summary) A new system of flow ratiometry having UV detection without a phase separator was developed and applied to the determination of the chloroform/water distribution coefficients (K_D) of phenol and its derivatives. An aqueous solution of analyte and chloroform was delivered independently and merged at various now ratios (R_f). The ratio was changed stepwise. Both phases, segmented each other, passed through an extraction coil and were directly led to a flow cell, where the absorbance of each phase was monitored. A wide-bore tubing (2 mm, i.d., 20 cm long) was inserted between the extraction coil and the flow cell in order to coalesce the chloroform segments and/or aqueous segments. Thus formed bigger segments were easily measured. The K_D was calculated from the slopes and the intersections of linear plots of A^<-1> vs. R_f, (AR_f)^<-1> vs. R_f^<-1>, and AR_f vs. A, where A is A_o (absorbance of chloroform phase), A_a(absorbance of aqueous phase), ΔA (= A_o - A_a) or ΣA (= A_o + A_a). Among them, the plots using ΣA as A gave the best results, probably due to a cancellation of the intrinsic errors in the A_o and A_a measurements. The method was simple and efficient (<5 min/determination) with satisfactory precision. (Keyword) stepwise flow ratiometry / distribution coefficient / partition coefficient / flow extraction / detection without phase separation (Link to Publication Site) ● Publication site (DOI): 10.2116/bunsekikagaku.53.359 (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1390001204355514112 ● Search Scopus @ Elsevier (DOI): 10.2116/bunsekikagaku.53.359 (DOI: 10.2116/bunsekikagaku.53.359, CiNii: 1390001204355514112)
65.	Liu Xiangli, Hideji TANAKA, Aiko Yamauchi, Bernard Testa and Hiroshi Chuman : Lipophilicity measurement by reversed-phase high-performance liquid chromatography (RP-HPLC): A comparison of two stationary phases based on retention mechanisms, Helvetica Chimica Acta, Vol.87, No.11, 2866-2876, 2004. (Link to Publication Site) ● Publication site (DOI): 10.1002/hlca.200490258 (Link to Search Site for Scientific Articles) ● Summary page in Scopus @ Elsevier: 2-s2.0-11144253473 (DOI: 10.1002/hlca.200490258, Elsevier: Scopus)
66.	Hideji TANAKA, Kiriko Aritsuka, Takahiro Tachibana, Hiroshi Chuman and Purnendu K. Dasgupta : Determination of dissociation constants of weak acids by feedback-based flow ratiometry, Analytica Chimica Acta, Vol.499, No.1-2, 199-204, 2003. (Link to Publication Site) ● Publication site (DOI): 10.1016/S0003-2670(03)00530-0 (Link to Search Site for Scientific Articles) ● Search Scopus @ Elsevier (DOI): 10.1016/S0003-2670(03)00530-0 (DOI: 10.1016/S0003-2670(03)00530-0)
67.	Hideji TANAKA, Takahiro Tachibana, Kiriko Aritsuka and Hiroshi Chuman : Determination of the Chloroform/Water Distribution Coefficient of Weak Acids by a Stepwise Flow Ratiomwtry, Journal of Flow Injection Analysis, Vol.20, No.1, 43-48, 2003. (Link to Publication Site) ● Publication site (DOI): 10.24688/jfia.20.1_43 (Link to Search Site for Scientific Articles) ● Search Scopus @ Elsevier (DOI): 10.24688/jfia.20.1_43 (DOI: 10.24688/jfia.20.1_43)
68.	Hiroshi Chuman, Atsushi Mori and Hideji TANAKA : Prediction of the 1-Octanol/H2O Partition Coefficient, Log P, by Ab Initio MO Calculations: Hydrogen-Bonding Effect of Organic solutes on Log P, Analytical Sciences, Vol.18, No.9, 1015-1020, 2002. (Summary) To predict the 1-octanol/H2O partition coefficient, log P, based on molecular structures, we calculated the solvent accessible surface area and the solvation energy difference of 166 organic molecules between 1-octanol and water environments with the ab initio molecular orbital self-consistent reaction field method, and then analyzed the relationships among the measured log P values with these two structural quantities by multiple linear-regression analyses. Physicochemically meaningful correlations were obtained, suggesting that non-hydrogen bonding and hydrogen-acceptor molecules behave similarly to each other in partitioning, but that hydrogen-donor molecules behave differently from the former molecules. The results provide a new computational approach for predicting log P. (Link to Publication Site) ● Publication site (DOI): 10.2116/analsci.18.1015 (Link to Search Site for Scientific Articles) ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 12243396 ● CiNii @ National Institute of Informatics (CRID): 1390001204256576640 ● Search Scopus @ Elsevier (PMID): 12243396 ● Search Scopus @ Elsevier (DOI): 10.2116/analsci.18.1015 (DOI: 10.2116/analsci.18.1015, PubMed: 12243396, CiNii: 1390001204256576640)
69.	Hideji TANAKA, Yuko Yamamoto and Hiroshi Chuman : Determination of the Distribution Coefficients of Phenol Derivatives and Others Based on a Volume Ratiometry Coupled with a Shake-Flask Method, Analytical Sciences, Vol.18, No.4, 485-487, 2002. (Link to Publication Site) ● Publication site (DOI): 10.2116/analsci.18.485 (Link to Search Site for Scientific Articles) ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 11999529 ● Search Scopus @ Elsevier (PMID): 11999529 ● Search Scopus @ Elsevier (DOI): 10.2116/analsci.18.485 (DOI: 10.2116/analsci.18.485, PubMed: 11999529)
70.	Purnendu K. Dasgupta, Hideji TANAKA and Kyoo Dong Jo : Continuous on-line true titrations by feedback based flow ratiometry: application to potentiometric acid base titrations, Analytica Chimica Acta, Vol.435, No.2, 289-297, 2001. (Keyword) Acid base titrations / Automated titration / Process titration (Link to Publication Site) ● Publication site (DOI): 10.1016/S0003-2670(01)00864-9 (Link to Search Site for Scientific Articles) ● Summary page in Scopus @ Elsevier: 2-s2.0-0035942540 (DOI: 10.1016/S0003-2670(01)00864-9, Elsevier: Scopus)
71.	Hideji TANAKA, Takahiro Tachibana and Hiroshi Chuman : Determination of Distribution Coefficient by Flow Ratiometry, Anal. Sci., Vol.17, 1403-1406, 2001.
72.	Hideji TANAKA, Purnendu K. Dasgupta and Jimin Huang : Continuous On-Line True Titrations by Feedback-Based Flow Ratiometry. The Principle of Compensating Errors, Analytical Chemistry, Vol.72, No.19, 4713-4720, 2000. (Link to Publication Site) ● Publication site (DOI): 10.1021/ac000598t (Link to Search Site for Scientific Articles) ● Summary page in Scopus @ Elsevier: 2-s2.0-0034306961 (DOI: 10.1021/ac000598t, Elsevier: Scopus)
73.	Hideji TANAKA : 電解調製酸化還元試薬を用いる前処理法の流れ分析への応用, Bunseki Kagaku, Vol.47, No.2, 79-91, 1998.
74.	岡崎学, Hideji TANAKA, 江藤徹, 松原道夫 and 岡本研作 : コバルト内標準法を用いる誘導結合プラズマ質量分析法による微量ガリウムの定量, Bunseki Kagaku, Vol.47, No.1, 59-62, 1998.
75.	Hideji TANAKA, Akiko Mitani, Kennsaku Okamoto, Hideyoshi Morita and Shigeru Shimomura : Determination of gallium by AAS using a tantalum carbide-coated graphite tube, Bunseki Kagaku, Vol.46, No.11, 875-880, 1997.
76.	Hideji TANAKA, Hideyoshi Morita, Shigeru Shimomura and Kensaku Okamoto : Cobalt(III) oxidation of organic compounds and its application to a determination of chemical oxygen demand at room temperatureTomiokanishi High School, Analytical Sciences, Vol.13, No.4, 607-612, 1997.
77.	Hideyoshi Morita, Tomoko Kita, Mayumi Umeno, Hideji TANAKA and Kensaku Okamoto : Extraction of elements with water from plastic containers for blood transfusion and for hyperalimentation, Bunseki Kagaku, Vol.45, No.12, 1101-1105, 1996.
78.	北川晋士, Hideji TANAKA, 岡本研作, 江藤徹 and 松原道夫 : 誘導結合プラズマ質量分析法による生体試料中の微量白金の定量, Bunseki Kagaku, Vol.45, No.6, 511-516, 1996.
79.	Hideyoshi Morita, Hideji TANAKA and Shigeru Shimomura : Atomic fluorescence spectrometry of mercury, --- Principles and developments ---, Spectrochimca Acta, Vol.50B, No.1, 69-84, 1995.

Review, Commentary:

1.	Masaki Takeuchi, Hitoshi Mizuguchi, Hiroto Takeda, Kyosuke Kinoshita, Hideji TANAKA, 大河内博, 大谷肇, 寺前紀夫, William Pipkin, 松井和子 and 渡辺忠一 : 熱分解GC/MSの大気マイクロプラスチックへの適用, Journal of Japan Society for Atmospheric Environment, Vol.58, No.1, A41-A43, 2023. (Tokushima University Institutional Repository) ● Metadata: 117897 (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1050858054371131136 (Tokushima University Institutional Repository: 117897, CiNii: 1050858054371131136)
2.	大塚裕太, Akira Itoh, Masaki Takeuchi and Hideji TANAKA : バイオセラミックス合成における全反射減衰-赤外スペクトルと多変量解析を用いたリン酸カルシウム相転移の評価法, Journal of Bio-Integration, Vol.10, No.1, 2-13, Jul. 2020. (Link to Publication Site) ● Publication site (DOI): 10.32176/biointeg.10.1_2 (Link to Search Site for Scientific Articles) ● Search Scopus @ Elsevier (DOI): 10.32176/biointeg.10.1_2 (DOI: 10.32176/biointeg.10.1_2)
3.	Hideji TANAKA : 振幅変調多重化フロー分析法, Journal of Flow Injection Analysis, Vol.33, No.1, 33-38, Jun. 2016. (Tokushima University Institutional Repository) ● Metadata: 117487 (Tokushima University Institutional Repository: 117487)
4.	Hideji TANAKA : フィードバック制御フローレイショメトリーによるハイスループット滴定, Journal of Flow Injection Analysis, Vol.32, No.2, 101-105, Dec. 2015.
5.	Hideji TANAKA : コーヒーリング現象を利用した分散粒子の分離法, ぶんせき, Vol.2011, No.11, 672-673, Nov. 2011.
6.	Hideji TANAKA : 難水溶性薬物の物性評価と製剤設計の新展開, ぶんせき, Vol.2010, No.5, 245, May 2010.
7.	Hideji TANAKA : SO2, Journal of Flow Injection Analysis, Vol.2003, No.1, 36, Jun. 2006.
8.	Hideji TANAKA and 中野惠文 : フロー分析法の滴定への応用, Journal of Flow Injection Analysis, Vol.21, No.2, 123-127, 2004.
9.	Hideji TANAKA : フローインジェクション分析法による分配係数の測定, ぶんせき, Vol.2001, No.5, 259-260, 2001.
10.	Hideji TANAKA : 活量は'活量係数×濃度'か, ぶんせき, Vol.2001, No.3, 154, 2001.
11.	Hideji TANAKA : 逆フローインジェクション法を用いるオンライン同位体希釈ICP-MS, ぶんせき, Vol.1998, No.4, 294, Apr. 1998.
12.	Hideji TANAKA : 液滴をWindowless光学セルとする新しい検出法, ぶんせき, Vol.1997, No.3, 241, Mar. 1997.
13.	Hideji TANAKA : 高活性試薬のオンライン調製法と流れ分析への応用, Journal of Flow Injection Analysis, Vol.14, No.1, 3-14, 1997.

Proceeding of International Conference:

1.	Hideji TANAKA, Keiro Higuchi and Masaki Takeuchi : Development of triangular-wave controlled flow analysis and its application to the determination of high-concentration analyte without dilution, The 2021 International Chemical Congress of Pacific Basin Societies, Honolulu, Hawaii, USA (Web), Dec. 2021.
2.	Hideji TANAKA and Masaki Takeuchi : Principle and application of amplitude modulated multiplexed flow analysis, International Symposium on Miniaturized Systems for Chemical Separation and Analysis, Kunming, China, Dec. 2019.
3.	Naoki Oka, Masaki Takeuchi, Hideji TANAKA and Tatsusada Yoshida : Study on interaction between protein and ligands based on linear expression analysis of free energy change using molecular calculation: Detailed analysis of complex formation of FKBP and FK506 derivatives, 2019 China-Japan-Korea symposium on Analytical Chemistry, Yongin, Korea, Oct. 2019.
4.	Akira Itoh, Yuta Ohtsuka, Masaki Takeuchi and Hideji TANAKA : Crystallinity evaluation of mechanochemically synthesized zinc chloroapatite by powder X-ray diffractometory and attenuated total reflection - Infrared spectroscopy, 2019 China-Japan-Korea symposium on Analytical Chemistry, Yongin, Korea, Oct. 2019.
5.	Naoya Kakiuchi, Masaki Takeuchi and Hideji TANAKA : High throughput titration based on variable and fixed triangular wave controlled flow ratiometry with LED-photodiode detector and its application to quality analysis and process control of vinegar and drug, 2019 China-Japan-Korea symposium on Analytical Chemistry, Yongin, Korea, Oct. 2019.
6.	Toru Takahashi, Yuta Otsuka, Hideji TANAKA and Masaki Takeuchi : Multivariate analysis for low resolution absorbance peaks: An accelerated FIA, International JAFIA 35th Anniversary Symposium with Profs. Christian and Dasgupta & the 56th Meeting of the Japanese Association for Flow Injection Analysis, Nagoya, Oct. 2019.
7.	Masaki Takeuchi, Hideji TANAKA, Hiroshi Okochi and Manabu Igawa : Dew occurrence and hydroxymethanesulfonate chemistry of dewwater in Yokohama, Japan, 8th International Conference on Fog, Fog Collection and Dew, Taipei, Jul. 2019.
8.	Naoki Oka, Masaki Takeuchi, Hideji TANAKA and Tatsusada Yoshida : Correlation analysis of binding free-energy change due to complex formation of FK506 derivatives with FK506 binding protein: a computational study, Pure and Applied Chemistry International Conference 2019, Bangkok, Feb. 2019.
9.	Naoya Kakiuchi, Masaki Takeuchi and Hideji TANAKA : Quality analysis and process control of vinegar and drug by feedback-based flow ratiometry, Pure and Applied Chemistry International Conference 2019, Bangkok, Feb. 2019.
10.	Hideji TANAKA, Riona Wada, Masatoshi Yanase, Keiro Higuchi and Masaki Takeuchi : Triangular-wave controlled flow analysis for determination of high-concentration analyte without dilution, Pure and Applied Chemistry International Conference 2019, Bangkok, Feb. 2019.
11.	Masaki Takeuchi, Yui Shimada, Haruka Yoshikawa and Hideji TANAKA : Nafion tube-based on-line concentrator: preconcentration of perchlorate for ion chromatography, Flow Analysis XIV, Bangkok, Dec. 2018.
12.	Yuta Otsuka, Satoru Goto, Akira Ito, Masaki Takeuchi and Hideji TANAKA : Dry mechanochemical synthesis of 2 : 1 caffeine / oxalic acid cocrystals and their evaluation by powder X-ray diffraction and multivariate analysis, 3rd International Symposium on BA/BE of Oral Drug Products, Lisbon, Oct. 2018.
13.	Hideji TANAKA, Tomoko Hirasaka, Oka Sawako and Masaki Takeuchi : Flow titrimetry based on air-segmented flow ratiometry controlled with feedback-based/fixed triangular waves, Pure and Applied Chemistry International Conference 2018, Hat Yai, Thailand, Feb. 2018.
14.	Naoya Kakiuchi, Masaki Takeuchi and Hideji TANAKA : High throughput titration by feedback-based flow ratiometry and its application to analyses drugs in Japanese Pharmacopoeia, Pure and Applied Chemistry International Conference 2018, Hat Yai, Thailand, Feb. 2018.
15.	Masaki Takeuchi, Naoya Tomiyasu, Makoto Namikawa, Shin-Ichi Ohira, Hideji TANAKA, Kei Toda and Hiroshi Okochi : Online analysis of water-soluble acidic gases and anions in particulate matter at the summit of Mt. Fuji, Japan, 2017 Symposium on Atmospheric Chemistry & Physics at Mountain Sites, Gotenba, Japan, Nov. 2017.
16.	Hideji TANAKA, Tomoko Hirasaka and Masaki Takeuchi : Flow titration by feedback-based flow ratiometry with air segmentation, Asia/ CJK symposium on analytical science 2017, Tokyo, Japan, Sep. 2017.
17.	Naoya Kakiuchi, Masaki Takeuchi and Hideji TANAKA : High throughput titration by feedback-based flow ratiometry and its application to analysis of vinegar samples, Asia/ CJK symposium on analytical science 2017, Tokyo, Japan, Sep. 2017.
18.	Hideji TANAKA, Erina Tomiyama, Tomoko Hirasaka, Hiroya Kubo, Sawako Oka, Naoya Kakiuchi, Akihiro Fujikawa and Masaki Takeuchi : High throughput titration by air-segmented flow ratiometry, The 13th Asian Conference on Analytical Sciences, Chiang Mai, Thailand, Dec. 2016.
19.	Otsuka Yuta, Ito Akira, Masaki Takeuchi, Mitome Hajime and Hideji TANAKA : Predictive evaluation of differential scanning calorimetry curve of theophylline tablets using portable Raman spectromerer, Japan-Taiwan Medical Spectroscopy International Symposium, Awaji, Japan, Dec. 2016.
20.	Yuta Otsuka, Akira Ito, Masaki Takeuchi, Hajime Mitome and Hideji TANAKA : Predictive evaluation of differential scanning calorimetry curve of theophylline tablets using portable Raman spectrometer, Japan-Taiwan Medical Spectroscopy International Symposium, Awaji, Japan, Dec. 2016.
21.	Masaki Takeuchi, Shinya Nakagawa, Kazuaki Miyata and Hideji TANAKA : Nitric acid gas generator for air analysis, 20th International Conference on Flow Injection Analysis and Related Techniques, Mallorca, Spain, Oct. 2016.
22.	Yuta Otsuka, Akira Ito, Saki Matsumura, Masaki Takeuchi and Hideji TANAKA : Investigation on carbamazepine polymorphic transformation kinetics with attenuated total reflectance-infrared spectra and multivariate curve resolution-alternating least squares analysis, 2016 China-Japan-Korea Symposium on Analytical Chemistry, Wuyishan, China, Aug. 2016.
23.	Masaki Takeuchi, Shinya Nakagawa, Hiroki Watanabe, Yuki Miyazaki, Hideji TANAKA, Takaharu Isobe, Hiroko Ogata and Hiroshi Okochi : Water-soluble atmospheric acid gases at the summit of Mt. Fuji, Japan, monitored with parallel plate wet denuder coupled ion chromatograph, The 8th Asia Pacific Symposium on Ion Analysis, 2015.
24.	Nakagawa Shinya, Hideji TANAKA and Masaki Takeuchi : Nitric acid gas generator, The International Chemical Congress of Pacific Baisin Societies (PACIFICHEM2015), Honolulu, Dec. 2015.
25.	Hideji TANAKA, Kubo Hiroya and Masaki Takeuchi : Pretreatment of phosphorus compounds by electrogenerated cobalt(III) ions and its evaluation by flow injection analysis, The International Chemical Congress of Pacific Baisin Societies (PACIFICHEM2015), Honolulu, Dec. 2015.
26.	Hideji TANAKA and Masaki Takeuchi : Flow analysis utilizing periodically varying flow rate: feedback-based flow ratiometry and amplitude modulated multiplexed flow analysis, The International Chemical Congress of Pacific Baisin Societies (PACIFICHEM2015), Honolulu, Dec. 2015.
27.	Masaki Takeuchi, Miki Narita, Emako Takano, Kaoru Yoshioka and Hideji TANAKA : Determination of perchlorate in the atmospheric aerosol by ion chromatography, Flow Analysis Xlll, Jul. 2015.
28.	Masaki Takeuchi, Kiichi Ishimine, Naoyuki Miki, Yuki Miyazaki and Hideji TANAKA : Nafion tube-based carbonate removal device for ion chromatography, 19 th International Confere0nce on Flow Injection Analysis and Related Techniques, Fukuoka, Dec. 2014.
29.	Takeshi Ogusu, Takeshi Uemura, Katsuya Uchimoto, Masaki Takeuchi and Hideji TANAKA : Spectrophotometric determination of phosphate ion by amplitude modulated multiplexed flow analysis, 19 th International Conference on Flow Injection Analysis and Related Techniques, Fukuoka, Dec. 2014.
30.	Yuta Otsuka, Masaki Takeuchi, Makoto Otsuka, B. Ben-Nissan and Hideji TANAKA : Investigation on relationship between CO2 concentration and self-setting TeCP-DCPD apatite cement formation by ATR-IR and chemoinfomatics, The 13th Asian BioCeramics Symposium (ABC2013), Kyoto, Japan, Dec. 2013.
31.	Masaki Takeuchi, Kaoru Yoshioka, Yusuke Toyama, Ai Kagami and Hideji TANAKA : On-line measurement of perchlorate in atmospheric aerosol based on ion chromatograph coupled with particle collector and post-column concentrator, 6th Shanghai International Symposium on Analytical Chemistry, Shanghai, China, Oct. 2012.
32.	Hideji TANAKA, Takeshi Ogusu, Katsuya Uchimoto and Masaki Takeuchi : Determination of phosphate ion in water samples by air segmentation - amplitude modulated multiplexed flow analysis, 6th Shanghai International Symposium on Analytical Chemistry, Shanghai, China, Oct. 2012.
33.	Masaki Takeuchi, Masato Izumi, Mizuki Watanabe, Tomoaki Obata, Kei Toda and Hideji TANAKA : Collection of hydrogen sulfide gas with surface treating annular denuder, Flow Analysis Xll, Thessaloniki, Greece, Sep. 2012.
34.	Takeshi Ogusu, Masaki Takeuchi and Hideji TANAKA : Air segmented amplitude modulated multiplexed flow analysis with no deaeration process. Determination of phosphate ion, Flow Analysis Xll, Thessaloniki, Greece, Sep. 2012.
35.	Hideji TANAKA, Yohei Kurokawa, Masaki Takeuchi and Akira Ohbuchi : Amplitude modulated multiplexed flow analysis for simultaneous determination of multiple analytes. Determination of ferrous and ferric ions, Flow Analysis Xll, Thessaloniki, Greece, Sep. 2012.
36.	Masaki Takeuchi, Yuki Miyazaki, Hiromichi Tsunoda and Hideji TANAKA : Acid gas measurement with parallel plate wet denuder coupled ion chromatograph, Pure and Applied Chemistry International Conference 2012, Chiang Mai, Thailand, Jan. 2012.
37.	Masaki Takeuchi, Yuki Miyazaki, Hiromichi Tsunoda and Hideji TANAKA : Automated acid gas monitor with parallel plate wet denuder, JAIMA Discussion on Analytical Science and Technology 2011, Chiba, Japan, Sep. 2011.
38.	Hideji TANAKA, Ogusu Takeshi, Inui Koji and Masaki Takeuchi : Air-segmented amplitude modulated multiplexed flow analysis, The 14th Asian Chemical Congress 2011, Bangkok, Thailand, Sep. 2011.
39.	Masaki Takeuchi, Hiromichi Tsunoda and Hideji TANAKA : Nafion membrane tube based concentrator for water soluble acid monitoring system, IUPAC International Congress on Analytical Sciences 2011, kyoto, Japan, May 2011.
40.	Hideji TANAKA, Kurokawa Yohei and Masaki Takeuchi : Amplitude modulated multiplexed flow analysis for simultaneous determination, IUPAC International Congress on Analytical Sciences 2011, Kyoto, Japan, May 2011.
41.	Hideji TANAKA, Inui Koji and Masaki Takeuchi : Air segmented amplitude modulated multiplexed flow analysis, IUPAC International Congress on Analytical Sciences 2011, Kyoto, Japan, May 2011.
42.	Masaki Takeuchi, Kaoru Yoshioka, Yusuke Toyama, Ai Kagami and Hideji TANAKA : Automated analysis for perchlorate in atmospheric aerosol, 2010 International Chemical Congress of Pacific Basin Societies (PACIFICHEM 2010), Honolulu, Dec. 2010.
43.	Hideji TANAKA : Principle and application of amplitude modulated multiplexed flow analysis, 2010 International Chemical Congress of Pacific Basin Societies (PACIFICHEM 2010), Dec. 2010.
44.	Hideji TANAKA, Koji Inui, Takeshi Ogusu, Yohei Kurokawa and Masaki Takeuchi : Air-segmented amplitude modulated flow analysis., 2010 International Chemical Congress of Pacific Basin Societies (PACIFICHEM 2010), Honolulu, Dec. 2010.
45.	Masaki Takeuchi, Yoshimi Shiramizu, Masaru Tanaka, Hiromichi Tsunoda, Hideji TANAKA, Norikazu Namiki and Shuji Fujii : Parallel plate wet denuder coupled ion chromatography for near real time monitoring of acids, ammonia and amines in clean room and equipments., ISSM2010, Tokyo, Oct. 2010.
46.	Hideji TANAKA, Takuto Mima, Hirokazu Takayasu, Yohei Kurokawa and Masaki Takeuchi : Amplitude Modulated Multiplexed Flow Analysis. Application to Simultaneous Determination of Ferrous and Ferric Ions., Flow Analysis XI, Sep. 2009.
47.	Hideji TANAKA, Takeshi Uemura, Takeshi Ogusu and Masaki Takeuchi : Determination of Phosphate Ion by Amplitude Modulated Flow Analysis With Lock-In Detection., Flow Analysis XI, Sep. 2009.
48.	Takuto Mima, Masaki Takeuchi and Hideji TANAKA : Application of Amplitude Modulated Multiplexed flow Analysis for the Simultaneous Determination of Multiple Analytes, 15th International Conference on Flow Injection Analysis Including Related Techniques (ICFIA 2008) & 25th Anniversary Meeting of Japanese Association for Flow Injection Analysis, Nagoya, Sep. 2008. (Keyword) Flow analysis
49.	Masaki Takeuchi, Jason V Dyke, Purnendu K Dasgupta, Hideji TANAKA and Kannan Srinivasan : Postcolumn Concentration in Ion Chromatography, 15th International Conference on Flow Injection Analysis Including Related Techniques (ICFIA 2008) & 25th Anniversary Meeting of Japanese Association for Flow Injection Analysis, Nagoya, Sep. 2008. (Keyword) Postcolumn concentration / Ion chromatography
50.	Hideji TANAKA, Mima Takuto, Iida Hitoshi and Takeuchi Masaki : Application of Multiplex Controlled Flow Ratiometry for the Simultaneous Determination of Ferrous and Ferric Ions, International Symposium on Flow-Based Analysis VII, Chiang Mai, Dec. 2007.
51.	Hideji TANAKA, Takuto Mima, Hitoshi Iida and Masaki Takeuchi : Application of Multiplex Controlled Flow Ratiometry for the Simultaneous Determination of Ferrous and Ferric Ions, International Symposium on Flow-Based Analysis Vll, Chiang Mai, Dec. 2007. (Keyword) Flow analysis
52.	Hideji TANAKA, Tursunjan Aydan, Ayumi Kitagawa, Masahiro Ono and Masaki Takeuchi : Application of Feedback-Based Flow Ratimetry to Simultaneous Determination of Calcium and Magnesium Ions by Chelatometry Using Photometric and Potentiometic Detectors, International Symposium on Flow-Based Analysis Vll, Chiang Mai, Dec. 2007. (Keyword) Flow analysis
53.	Hideji TANAKA : A Proposal of Multiplex Controlled Flow Ratiometry, The 14th International Conference on Flow Injection Analysis, Berlin, Sep. 2007.
54.	Hideji TANAKA : High throughput titration based on a flow ratiomatry controlled with variable and fixed triangular waves, The International Chemical Congress of Pacific Basin Societies (PACIFICHEM 2005), Honolulu, Dec. 2005.
55.	Hideji TANAKA and Purnendu K. Dasgupta : Determination of Acid/Base Dissociation Constants by Feedback-Based Flow ratiometry, 12th International Conference on Flow Injection Analysis, Merida, Dec. 2003.
56.	Hideji TANAKA and Kiriko Aritsuka : Determination of dissociation Constants ofweak Acids by Flow ratiometry, Flow Analysis IX-Australia 2003, Geelong, Feb. 2003.
57.	Hideji TANAKA, Takahiro Tachibana and Hiroshi Chuman : Determination of Distribution Coefficient by Flow Ratiometry, IUPAC International Congress on Analytical Sciences 2001, Tokyo, Aug. 2001.
58.	Hideji TANAKA and Purnendu K. Dasgupta : Continuous process titration by feedback based flow ratiometry, CPAC Semiannual Sponsor Meeting, Seattle, Nov. 2000.

Proceeding of Domestic Conference:

1.	Yuka Maeta, Haruka Tanaka, Hideji TANAKA and Masaki Takeuchi : ポータブルなNH3ガスモニタの開発, 第84回分析化学討論会, May 2024.
2.	Ryosuke Niki, Maria Shichijoh, Kazumasa Okamoto, Tohru Takahashi, 大平慎一, Hitoshi Mizuguchi, Hideji TANAKA and Masaki Takeuchi : フィードバック標準添加法による海水中亜硝酸イオン，硝酸イオンの自動化測定, 第84回分析化学討論会, May 2024.
3.	Kyosuke Kinoshita, MAEKAWA Taiga, Mao Kashimoto, Erina Matsuda, IKAWA Ryotaroh, ASAI Yuki, TAKEDA Hiroto, NAEMURA Mai, Hitoshi Mizuguchi, 小野塚洋介, 大河内博, Hideji TANAKA and Masaki Takeuchi : 熱分解GC/MSを用いる大気マイクロプラスチックの定量, 第84回分析化学討論会, May 2024.
4.	Yuki Teranishi, Masaki Takeuchi and Hideji TANAKA : デジタル画像撮影・測色法のためのソフトウェアの開発とフロー分析法への応用, 第59回フローインジェクション分析講演会, Nov. 2023.
5.	ORUBEMO Serase Kebede, Masaki Takeuchi and Hideji TANAKA : Development of digital-movie-based flow colorimetry for continuous pH monitoring based on color specification values using universal indicators, 第59回フローインジェクション分析講演会, Nov. 2023.
6.	Kyosuke Kinoshita, TAKEDA Hiroto, NAEMURA Mai, Hitoshi Mizuguchi, Mao Kashimoto, Erina Matsuda, IKAWA Ryotaroh, ASAI Yuki, MAEKAWA Taiga, Hideji TANAKA and Masaki Takeuchi : 徳島市における大気マイクロプラスチックの動態, 第59回フローインジェクション分析講演会, Nov. 2023.
7.	NAGANO Sota, Aoi Iwasa, Hideji TANAKA and Masaki Takeuchi : FIAによる高濃度試料の非希釈分析, 第59回フローインジェクション分析講演会, Nov. 2023.
8.	MAEKAWA Taiga, Kyosuke Kinoshita, TAKEDA Hiroto, NAEMURA Mai, Mao Kashimoto, Erina Matsuda, IKAWA Ryotaroh, ASAI Yuki, Hitoshi Mizuguchi, 大河内博, Hideji TANAKA and Masaki Takeuchi : 熱分解GC/MSを用いた大気マイクロプラスチックの分析 ―大気マイクロプラスチック捕集フィルターの検討―, 第59回フローインジェクション分析講演会, Nov. 2023.
9.	HONOKA Maie, Masaki Takeuchi and Hideji TANAKA : デジタル画像の色相, 輝度, RGB 単位ベクトル間の内積に基づく滴定終点検出法の開発と局方医薬品定量への応用, 第62回日本薬学会中国四国支部学術大会, Oct. 2023.
10.	Kebede Olbemo Selass, Masaki Takeuchi and Hideji TANAKA : Digital-movie-based flow colorimetry for pH measurement with universal indicators, 日本分析化学会第72年会, Sep. 2023.
11.	Erina Matsuda, Mao Kashimoto, Kyosuke Kinoshita, IKAWA Ryotaroh, ASAI Yuki, MAEKAWA Taiga, 谷悠人, 大河内博, 後藤充貴, 反町篤行, Hideji TANAKA and Masaki Takeuchi : µFT-IRを用いた大気中マイクロプラスチック迅速分析法の検討, 日本分析化学会第72年会, Sep. 2023.
12.	Aoi Iwasa, Hideji TANAKA and Masaki Takeuchi : フローインジェクション分析法の広ダイナミックレンジ化, 日本分析化学会第72年会, Sep. 2023.
13.	Yuki Teranishi, Masaki Takeuchi and Hideji TANAKA : デジタル画像撮影・測色法のためのOpenCV導入ソフトウェアの開発とフロー分析法への応用, 第83回分析化学討論会, May 2023.
14.	Hideji TANAKA, Naoya Kakiuchi, Junya Ochiai and Masaki Takeuchi : デジタルマイクロスコープを用いる動画撮影・測色法の開発とフィードバック制御フローレイショメトリーへの応用, 第58回フローインジェクション分析講演会, Nov. 2022.
15.	Ippei Moriguchi, Tomoyo Taniguchi, Masaki Takeuchi and Hideji TANAKA : デジタルマイクロスコープを用いる液滴の動画撮影・測色検出法の開発とリン酸イオン定量への応用, 第58回フローインジェクション分析講演会, Nov. 2022.
16.	Madoka Nishimura, Yukari Nakaya, Hideji TANAKA and Masaki Takeuchi : 過塩素酸イオンのフロー分析; イオンクロマトグラフ vs. FIA, 第58回フローインジェクション分析講演会, Nov. 2022.
17.	Taiga Inai, Ayumi Tabata, Masaki Takeuchi and Hideji TANAKA : 液滴を光学セルとして用いるフロー分析法の開発とリン酸イオン定量への応用, 日本分析化学会第71年会, Sep. 2022.
18.	Naoya Kakiuchi, Junya Ochiai, Masaki Takeuchi and Hideji TANAKA : RGB単位ベクトル間の内積に基づく変色判定; フィードバック制御フローレイショメトリーによる局方医薬品の滴定, 日本分析化学会第71年会, Sep. 2022.
19.	Masaki Takeuchi, Hitoshi Mizuguchi, Hiroto Takeda, Kyosuke Kinoshita, Hideji TANAKA, 大河内博, 大谷肇, 寺前紀夫, William Pipkin, 松井和子 and 渡辺忠一 : 熱分解GC/MSの大気マイクロプラスチックへの適用, 第63回大気環境学会年会, Sep. 2022.
20.	Mao Kashimoto, Erina Matsuda, Kyosuke Kinoshita, Hiroto Takeda, Hitoshi Mizuguchi, 谷悠人, 大河内博, Hideji TANAKA and Masaki Takeuchi : 大気中マイクロプラスチック分析における前処理の迅速化, 第63回大気環境学会年会, Sep. 2022.
21.	Naoto Kawamitsu, Kaho Maeda, Hideji TANAKA and Masaki Takeuchi : ウェットデニューダーとFIAを組み合わせたSO2測定システムの開発, 第63回大気環境学会年会, Sep. 2022.
22.	Yuka Maeta, Haruka Tanaka, Hideji TANAKA and Masaki Takeuchi : ポータブルなオンラインNH3ガス分析システムの開発と実大気への応用, 第28回中国四国支部分析化学若手セミナー, Jun. 2022.
23.	Kyosuke Kinoshita, Hiroto Takeda, Hitoshi Mizuguchi, Mao Kashimoto, Erina Matsuda, Hideji TANAKA and Masaki Takeuchi : Py-GC/MSを用いた大気マイクロプラスチックの分析, 第28回中国四国支部分析化学若手セミナー, Jun. 2022.
24.	Ryosuke Niki, Maria Shichijoh, Hideji TANAKA and Masaki Takeuchi : 環境中亜硝酸イオンのフローインジェクション吸光光度法における共存物質の干渉, 第28回中国四国支部分析化学若手セミナー, Jun. 2022.
25.	Madoka Nishimura, Yukari Nakaya, Masaki Takeuchi and Hideji TANAKA : イオンクロマトグラフィーによる河川水中過塩素酸イオン分析法の開発(2), 第29回クロマトグラフィーシンポジウム, Jun. 2022.
26.	HONOKA Maie, Naoya Kakiuchi, Junya Ochiai, Masaki Takeuchi and Hideji TANAKA : デジタル画像のRGB単位ベクトル間の内積，色相，および輝度を用いる指示薬の変色の判定とフロー滴定への応用, 第82回分析化学討論会, May 2022.
27.	Naoya Kakiuchi, Junya Ochiai, Masaki Takeuchi and Hideji TANAKA : RGB単位ベクトル間の内積に基づく指示薬の変色判定とフロー滴定への応用, 第82回分析化学討論会, May 2022.
28.	Masaki Takeuchi, Serika Okabe and Hideji TANAKA : 溶媒留去/オンライン濃縮法による陰イオンのポストカラム濃縮, 第37回イオンクロマトグラフィー討論会, Dec. 2021.
29.	Haruka Tanaka, Makoto Namikawa, Hideji TANAKA and Masaki Takeuchi : ポータブルなオンラインNH3ガスモニタの開発, 第57回フローインジェクション分析講演会, Oct. 2021.
30.	Maria Shichijoh, Kazumasa Okamoto, Miharu Nomura, Tohru Takahashi, 大平慎一, Hitoshi Mizuguchi, Hideji TANAKA and Masaki Takeuchi : フィードバック標準添加法による環境水中亜硝酸イオンの自動化測定, 第57回フローインジェクション分析講演会, Oct. 2021.
31.	Serika Okabe, Kazumasa Okamoto, Hideji TANAKA and Masaki Takeuchi : ナフィオンチューブを用いた溶媒留去/オンライン濃縮法の高性能化, 第57回フローインジェクション分析講演会, Oct. 2021.
32.	Hideji TANAKA : Journal of Flow Injection Analysis誌, 第57回フローインジェクション分析講演会, Oct. 2021.
33.	Ayumi Tabata, Masaki Takeuchi and Hideji TANAKA : LED-フォトセンサアンプを用いた液滴光度検出フロー分析法の開発, 第57回フローインジェクション分析講演会, Oct. 2021.
34.	Tomoyo Taniguchi, Ippei Moriguchi, Masaki Takeuchi and Hideji TANAKA : -, 第57回フローインジェクション分析講演会, Oct. 2021.
35.	Ayumi Tabata, Masaki Takeuchi and Hideji TANAKA : 流路末端に生成する液滴を光学セルとして用いる吸光光度検出法の開発, 日本分析化学会第70年会, Sep. 2021.
36.	Tomoyo Taniguchi, Ippei Moriguchi, Masaki Takeuchi and Hideji TANAKA : 液滴の動画撮影・RGB画像検出に基づくフロー分析法の開発, 日本分析化学会第70年会, Sep. 2021.
37.	Madoka Nishimura, Yukari Nakaya, Masaki Takeuchi and Hideji TANAKA : イオンクロマトグラフィーによる河川水中過塩素酸イオン分析法の開発, 第28回クロマトグラフィーシンポジウム, Jun. 2021.
38.	Haruka Tanaka, Makoto Namikawa, Hideji TANAKA and Masaki Takeuchi : ポータブルなオンラインNH3ガス分析システムの開発, 第28回クロマトグラフィーシンポジウム, Jun. 2021.
39.	Haruka Ogawa, Tatsuya Oda, Hideji TANAKA and Masaki Takeuchi : 水溶性酸性ガス追跡システムのポータブル化, 第27回中国四国支部分析化学若手セミナー, Jun. 2021.
40.	Aoi Iwasa, Masatoshi Yanase, Hideji TANAKA and Masaki Takeuchi : 高速フーリエ変換によるフローインジェクション分析法の広ダイナミックレンジ化, 第27回中国四国支部分析化学若手セミナー, Jun. 2021.
41.	柿内直哉, 落合惇也, Masaki Takeuchi and Hideji TANAKA : 医薬品定量のためのデジタル画像処理によるフロー滴定, 第59回日本薬学会・日本薬剤師会・日本病院薬剤師会中国四国支部学術大会, Dec. 2020.
42.	Junya Ochiai, Sawako Oka, Masaki Takeuchi and Hideji TANAKA : フィードバック/固定三角波制御フローレイショメトリーによる局法医薬品の定量; 気節-非相分離検出法導入による信頼性の向上, 第59回日本薬学会・日本薬剤師会・日本病院薬剤師会中四国支部学術大会, Nov. 2020.
43.	Masatoshi Yanase, Riona Wada, Masaki Takeuchi and Hideji TANAKA : 三角波制御振幅変調フロー分析法による試薬消費量低減; 全鉄定量による検証, 第59回日本薬学会・日本薬剤師会・日本病院薬剤師会中四国支部学術大会, Nov. 2020.
44.	Masatoshi Yanase, Riona Wada, Masaki Takeuchi and Hideji TANAKA : 三角波制御振幅変調フロー分析法による高濃度試料の非希釈分析, 第80回分析化学討論会, May 2020.
45.	Junya Ochiai, Naoya Kakiuchi, Masaki Takeuchi and Hideji TANAKA : ディジタル画像処理RGB検出法を導入したフィードバック制御フローレイショメトリーによるハイスループット滴定, 第80回分析化学討論会, May 2020.
46.	Naoya Kakiuchi, Junya Ochiai, Masaki Takeuchi and Hideji TANAKA : RGB値に基づく検出器を利用したデジタル画像処理による医薬品のフロー滴定, 日本薬学会140年会, Mar. 2020.
47.	Hideji TANAKA, Riona Wada, Masatoshi Yanase, 樋口慶郎 and Masaki Takeuchi : 高濃度試料の非希釈分析を目的とする三角波制御振幅変調フロー分析法の開発, 日本薬学会140年会, Mar. 2020.
48.	Riona Wada, Masaki Takeuchi and Hideji TANAKA : 高濃度試料の分析を目的とした三角波制御フロー分析法の研究, 日本分析化学会第68年会, Sep. 2019.
49.	Aiko Miyazaki, Naoya Kakiuchi, Kazumasa Okamoto, Masaki Takeuchi and Hideji TANAKA : フローレイショメトリーに基づくハイスループット滴定法の開発と日本薬局方医薬品定量への応用, 日本分析化学会第68年会, Sep. 2019.
50.	Yukari Nakaya, Miki Narita, Hideji TANAKA and Masaki Takeuchi : イオンクロマトグラフィーによる河川水中の過塩素酸イオン分析法の検討, 日本分析化学会第68年会, Sep. 2019.
51.	Kaho Maeda, Makoto Namikawa, Naoya Tomiyasu, Hideji TANAKA and Masaki Takeuchi : ミストチャンバー法による徳島市内の大気粒子状物質のオンライン分析, 日本分析化学会第68年会, Sep. 2019.
52.	Ayumi Tabata, Tomoyo Taniguchi, Masaki Takeuchi and Hideji TANAKA : 液滴を用いた吸光光度検出法の開発, 第25回分析化学若手セミナー, Jun. 2019.
53.	Tomoyo Taniguchi, Ayumi Tabata, Naoya Kakiuchi, Masaki Takeuchi and Hideji TANAKA : 液滴を用いたRGB画像検出法の開発, 第25回分析化学若手セミナー, Jun. 2019.
54.	Masaki Takeuchi, Haruka Yoshikawa, Yui Shimada, Naoyuki Miki, Kiichi Ishimine and Hideji TANAKA : ナフィオンチューブを用いた陰イオンのオンライン濃縮, 第26回クロマトグラフィーシンポジウム, Jun. 2019.
55.	Hideji TANAKA, Riona Wada, Masatoshi Yanase and Masaki Takeuchi : 試薬消費量の節減を可能にする三角波制御フロー分析法の開発, 第79回分析化学討論会, May 2019.
56.	Yuta Otsuka, Masaki Takeuchi and Hideji TANAKA : 超モバイル近赤外分光計によるカルバマゼピン擬似結晶多形転移の研究, 日本薬剤学会第34年会, May 2019.
57.	Masaki Takeuchi, Haruka Yoshikawa, Yui Shimada and Hideji TANAKA : ナフィオンチューブによる河川水中過塩素酸イオンのオンライン濃縮, 第79回分析化学討論会, May 2019.
58.	Yuta Otsuka, Akira Itoh, Masaki Takeuchi and Hideji TANAKA : 湿式メカノケミカル合成法によるクロロアパタイトの研究, バイオインテグレーション学会第9回学術大会, Apr. 2019.
59.	Sawako Oka, Junya Ochiai, Kazumasa Okamoto, Masaki Takeuchi and Hideji TANAKA : 気節-非相分離フィードバック制御フローレイショメトリーの開発と応用, 第55回フローインジェクション分析講演会, Nov. 2018.
60.	Takuya Sumitomo, Kazumasa Okamoto, Masaki Takeuchi and Hideji TANAKA : Visual Basicによる自動連続分析ソフトウェアの開発, 第55回フローインジェクション分析講演会, Nov. 2018.
61.	Kazumasa Okamoto, Hideji TANAKA and Masaki Takeuchi : 軸方向分散を抑えた陽イオン交換モジュールの開発とイオンクロマトグラフィーへの適用, 第55回フローインジェクション分析講演会, Nov. 2018.
62.	Makoto Namikawa, Kazumasa Okamoto, Tatsuya Oda, 大河内博, 戸田敬, Hideji TANAKA and Masaki Takeuchi : 自由対流圏高度における水溶性酸性ガス及び粒子状物質の連続分析, 第55回フローインジェクション分析講演会, Nov. 2018.
63.	Miharu Nomura, Hideji TANAKA and Masaki Takeuchi : 標準添加法を取り入れた海水中亜硝酸イオンのフロー分析, 第55回フローインジェクション分析講演会, Nov. 2018.
64.	Haruka Yoshikawa, Kazumasa Okamoto, Yui Shimada, Hideji TANAKA and Masaki Takeuchi : ナフィオンチューブによる前濃縮を用いた環境試料中過塩素酸イオンの高感度検出, 第55回フローインジェクション分析講演会, Nov. 2018.
65.	Naoya Kakiuchi, Masaki Takeuchi and Hideji TANAKA : フィードバック制御フローレイショメトリーによるプロセス分析と制御, 日本分析化学会第67年会, Sep. 2018.
66.	Hideji TANAKA, Riona Wada, Masatoshi Yanase, 樋口慶郎 and Masaki Takeuchi : 振幅変調多重化フロー分析法と高濃度試料の非希釈分析, 日本分析化学会第67年会, Sep. 2018.
67.	Naoya Kakiuchi, Masaki Takeuchi and Hideji TANAKA : フィードバック制御フローレイショメトリーの工程管理への応用, 第24回中国四国支部分析化学若手セミナー, Jul. 2018.
68.	Naoki Oka, Masaki Takeuchi, Hideji TANAKA and Tatsusada Yoshida : 分子科学計算によるFK506結合タンパク質とリガンドとの分子間相互作用解析, 第24回中国四国支部分析化学若手セミナー, Jul. 2018.
69.	Yuta Otsuka, Satoru GOTO, Akira Itoh, Masaki Takeuchi and Hideji TANAKA : 徐放性製剤開発を目的としたアミノ酸によるハイドロキシアパタイトの結晶成長制御の研究, 日本薬剤学会第33年会, Jun. 2018.
70.	Kazumasa Okamoto, Hideji TANAKA and Masaki Takeuchi : イオンクロマトグラフィーにおけるNafionチューブを用いたサプレッサーの開発, 第24回中国四国支部分析化学若手セミナー, Jun. 2018.
71.	Hideji TANAKA, Riona Wada and Masaki Takeuchi : 高濃度試料の分析を目的とした三角波制御フロー分析法の開発とFe2+定量による検証, 第78回分析化学討論会, May 2018.
72.	Masaki Takeuchi, Yui Shimada, Haruka Yoshikawa, 石嶺希一, 三木直之 and Hideji TANAKA : ナフィオンチューブを用いる陰イオンのオンライン濃縮/除去デバイス, 第78回分析化学討論会, May 2018.
73.	Masaki Takeuchi, Naoya Tomiyasu, Makoto Namikawa, Hideji TANAKA, 戸田敬 and 大河内博 : 富士山頂における大気中HNO3, SO2, NO3-及びSO42-の高時間分解観測, 第27回環境化学討論会, May 2018.
74.	Miharu Nomura, Hideji TANAKA and Masaki Takeuchi : 標準添加法を取り入れたフローインジェクション分析法によるリン酸イオンの定量, 日本薬学会138年会, Mar. 2018.
75.	Makoto Namikawa, Kaho Maeda, Hideji TANAKA and Masaki Takeuchi : 膜透過を利用する大気中アンモニアガスの測定, 日本薬学会138年会, Mar. 2018.
76.	Kazumasa Okamoto, Mayu Watanabe, Hideji TANAKA and Masaki Takeuchi : イオンクロマトグラフ法におけるサプレッサーと濃縮器の統合 ∼サプレッサー部の構築∼, 日本薬学会138年会, Mar. 2018.
77.	Yuta Ohtsuka, Akira Itoh, Masaki Takeuchi, 佐々木哲郎 and Hideji TANAKA : 低温状態におけるカフェイン-シュウ酸共結晶のt高分解能型テラヘルツ測定と密度汎関数理論を用いた振動モード解析の研究, 日本薬学会138年会, Mar. 2018.
78.	Akira Itoh, Yuta Ohtsuka, Masaki Takeuchi and Hideji TANAKA : 粉末X線回折法と全反射減衰赤外分光法を用いたメカノケミカル合成クロロアパタイトの結晶性評価, 日本薬学会138年会, Mar. 2018.
79.	Masaki Takeuchi, Shinya Nakagawa, Kazuaki Miyata and Hideji TANAKA : パーミエーションチューブ法による硝酸標準ガスの発生, 第34回イオンクロマトグラフィー討論会, Dec. 2017.
80.	Naoya Kakiuchi, Masaki Takeuchi and Hideji TANAKA : フィードバック/固定三角波制御フローレイショメトリーの局方医薬品定量への応用, 第54回フローインジェクション分析講演会, Dec. 2017.
81.	Naoya Kakiuchi, Masaki Takeuchi and Hideji TANAKA : フィードバック/固定三角波制御フローレイショメトリーの開発と局方医薬品のハイスループット滴定への応用, 第56回日本薬学会・日本薬剤師会・日本病院薬剤師会中国四国支部学術大会, Oct. 2017.
82.	Tomoko Hirasaka, Sawako Oka, Masaki Takeuchi and Hideji TANAKA : 気節-非相分離フィードバック制御フローレイショメトリーの各種酸塩基滴定への応用, 日本分析化学会第66年会, Sep. 2017.
83.	Erina Tomiyama, Riona Wada, Masaki Takeuchi and Hideji TANAKA : 高濃度試料の分析を目的とする三角波制御フロー分析法の開発, 日本分析化学会第66年会, Sep. 2017.
84.	Yui Shimada, Hideji TANAKA and Masaki Takeuchi : ナフィオンチューブを用いる微量陰イオンのオンライン濃縮, 日本分析化学会第66年会, Sep. 2017.
85.	Akira Itoh, Yuta Ohtsuka, Masaki Takeuchi and Hideji TANAKA : 亜鉛クロロアパタイトのメカノケミカル合成と赤外吸収・粉末X線回折データの多変量解析に基づく結晶性評価, 第26回無機リン化学討論会, Aug. 2017.
86.	Riona Wada, 富山えりな, Masaki Takeuchi and Hideji TANAKA : 高濃度試料の分析を目的とした振幅変調フロー分析法の研究, 第23回中国四国支部分析化学若手セミナー, Jul. 2017.
87.	Aiko Miyazaki, Naoya Kakiuchi, Masaki Takeuchi and Hideji TANAKA : フィードバック制御と固定三角波制御を併用したフローレイショメトリーによるハイスループット滴定, 第23回中国四国支部分析化学若手セミナー, Jul. 2017.
88.	Naoya Kakiuchi, Aiko Miyazaki, Masaki Takeuchi and Hideji TANAKA : ハイスループット滴定(43滴定/分)を可能にするフィードバック/固定三角波制御フローレイショメトリー, 第77回分析化学討論会, May 2017.
89.	Akira Itoh, Yuta Ohtsuka, Masaki Takeuchi and Hideji TANAKA : 結晶性評価を目的とした赤外分光法と多変量解析の研究; 亜鉛クロロアパタイトへの応用, 日本薬学会137年会, Mar. 2017.
90.	Yuta Ohtsuka, Akira Itoh, Masaki Takeuchi, 三留肇 and Hideji TANAKA : 粉末X線回折パターンの予測を目的としたラマン・赤外スペクトルデータの相関解析;テオフィリン結晶多形への応用, 日本薬学会137年会, Mar. 2017.
91.	Yuta Ohtsuka, Akira Itoh, Masaki Takeuchi and Hideji TANAKA : 新規バイオセラミックとしての水酸基置換アパタイトの研究, 第5回日本バイオマテリアル学会中四国シンポジウム, Jan. 2017.
92.	Naoya Tomiyasu, Makoto Namikawa, Hideji TANAKA and Masaki Takeuchi : 徳島市における水溶性酸性ガス及びPM2.5に含まれる陰イオンの高時間分解観測, 第33回イオンクロマトグラフィー討論会, Dec. 2016.
93.	Sawako Oka, Masaki Takeuchi and Hideji TANAKA : 気節-非相分離フローレイショメトリーによるハイスループット滴定, 第53回フローインジェクション分析講演会, Nov. 2016.
94.	Takuya Sumitomo, Mari Osaki, Masaki Takeuchi and Hideji TANAKA : 内標準‐振幅変調多重化フロー分析法の開発とFe2+定量による検証, 第53回フローインジェクション分析講演会, Nov. 2016.
95.	Kazumasa Okamoto, Mayu Watanabe, Hideji TANAKA and Masaki Takeuchi : イオンクロマトグラフ法におけるサプレッサーと濃縮器の統合, 第53回フローインジェクション分析講演会, Nov. 2016.
96.	Miki Narita, Emako Takano, Hideji TANAKA and Masaki Takeuchi : 大気エアロゾルに含まれる過塩素酸イオンの動態解析, 第53回フローインジェクション分析講演会, Nov. 2016.
97.	Hiroki Watanabe, Yuta Ohtsuka, Hideji TANAKA and Masaki Takeuchi : クロマトグラムの多変量解析∼中空キャピラリーカラムを用いたカチオン分析∼, 第53回フローインジェクション分析講演会, Nov. 2016.
98.	Naoya Tomiyasu, Makoto Namikawa, Hideji TANAKA and Masaki Takeuchi : 富士山頂における水溶性酸性ガス/粒子状物質の観測, 第53回フローインジェクション分析講演会, Nov. 2016.
99.	Akira Itoh, Yuta Ohtsuka, Masaki Takeuchi and Hideji TANAKA : 全反射減衰赤外分光法と多変量解析を用いるテオフィリン錠剤の示差走査熱量と溶出挙動の予測, 日本分析化学会第65年会, Sep. 2016.
100.	Naoya Kakiuchi, Masaki Takeuchi, 藤川明洋 and Hideji TANAKA : フィードバック / 固定三角波制御フローレイショメトリーによる超ハイスループット滴定, 日本分析化学会第65年会, Sep. 2016.
101.	Yuta Ohtsuka, Akira Itoh, Masaki Takeuchi, 三留肇 and Hideji TANAKA : ポータブルラマン分光計とケモメトリックスを用いる医薬品溶出挙動と粉末X線パターンの予測, 日本分析化学会第65年会, Sep. 2016.
102.	Saki Matsumura, Yuta Ohtsuka, Masaki Takeuchi and Hideji TANAKA : 全反射減衰-赤外分光法および主成分分析法を用いるテオフィリン無水物錠の溶媒介転移に関する研究, 日本分析化学会第65年会, Sep. 2016.
103.	Masaki Takeuchi, Shinya Nakagawa, Kazuaki Miyata, Hiroki Watanabe and Hideji TANAKA : 大気分析のための硝酸ガス発生装置の開発, 第57回大気環境学会年会, Sep. 2016.
104.	Akira Itoh, Saki Matsumura, Yuta Ohtsuka, Masaki Takeuchi and Hideji TANAKA : 紫外吸収スペクトルのフロー測定とケモメトリックスによる二層錠製剤の溶出挙動の評価, 第22回中国四国支部分析化学若手セミナー, Jul. 2016.
105.	Hideji TANAKA, Hiroya Kubo, Mari Osaki, Sawako Oka, Takuya Sumitomo and Masaki Takeuchi : フィードバック制御フローレイショメトリーと振幅変調多重化フロー分析法, 第76回分析化学討論会, May 2016.
106.	成田三紀, 高野恵万子, Hideji TANAKA and Masaki Takeuchi : イオンクロマトグラフィーを用いた河川水中の過塩素酸イオン分析法の検討, 日本薬学会136年会, Mar. 2016.
107.	Naoya Takagi, Makoto Namikawa, Hideji TANAKA and Masaki Takeuchi : 徳島市内における酸性ガス/PM2.5のオンライン分析, 日本薬学会136年会, Mar. 2016.
108.	Saki Matsumura, Yuta Ohtsuka, Masaki Takeuchi and Hideji TANAKA : 高湿度条件下におけるテオフィリン無水物の溶媒介転移, 日本薬学会136年会, Mar. 2016.
109.	Yuta Ohtsuka, Akira Itoh, Masaki Takeuchi, 三留肇 and Hideji TANAKA : 示差走査熱量曲線の予測を目的としたポータブルラマン分光計によるテオフィリン錠剤の測定, 日本薬学会136年会, Mar. 2016.
110.	Akira Itoh, Yuta Ohtsuka, Masaki Takeuchi and Hideji TANAKA : 新規バイオセラミックスとしてのクロロアパタイトのメカノケミカル合成とその評価, 日本薬学会136年会, Mar. 2016.
111.	Hideji TANAKA : 流量の周期的変化を利用するフロー分析法の創案, 日本分析化学会中国四国支部周南地区講演会, Dec. 2015.
112.	Shinya Nakagawa, Hideji TANAKA and Masaki Takeuchi : 硝酸ガス発生装置, 第52 回フローインジェクション分析講演会, Nov. 2015.
113.	Mari Osaki, Takeshi Ohgusu, Masaki Takeuchi and Hideji TANAKA : 内標準法を導入した振幅変調多重化フロー分析法によるFe2+の定量, 第52 回フローインジェクション分析講演会, Nov. 2015.
114.	Hiroya Kubo, Erina Tomiyama, Tomoko Hirasaka, Masaki Takeuchi and Hideji TANAKA : 気節-非相分離フィードバック制御フローレイショメトリーによる滴定, 第52 回フローインジェクション分析講演会, Nov. 2015.
115.	Akira Itoh, Yuta Ohtsuka, Masaki Takeuchi and Hideji TANAKA : カフェイン-シュウ酸2:1共結晶のメカノケミカル合成における機械的エネルギーと温度の影響, 2015 Tokushima Bioscience Retreat, Sep. 2015.
116.	Hideji TANAKA, Tomoko Hirasaka, Erina Tomiyama and Masaki Takeuchi : フィードバック制御フローレイショメトリーに基づくフロー滴定法への気節法の導入, 日本分析化学会第64年会, Sep. 2015.
117.	Masaki Takeuchi, Shinya Nakagawa, Hiroki Watanabe, Yuki Miyazaki, Hideji TANAKA, 磯部貴陽, 緒方裕子 and 大河内博 : ウエットデニューダー法による水溶性酸性ガスの富士山頂定点観測, 第56回大気環境学会年会, Sep. 2015.
118.	Akira Itoh, Yuta Ohtsuka, Masaki Takeuchi and Hideji TANAKA : カフェイン-シュウ酸2:1共結晶のメカノケミカル合成における機械的エネルギーと温度の影響, 第21回分析化学若手セミナー, Jul. 2015.
119.	Yuta Ohtsuka, Saki Matsumura, Akira Itoh, Masaki Takeuchi and Hideji TANAKA : 医薬品結晶転移制御を目的とした赤外スペクトルと多変量解析に基づく研究, 第21回分析化学若手セミナー, Jul. 2015.
120.	Yuta Ohtsuka, Saki Matsumura, Akira Itoh, Masaki Takeuchi and Hideji TANAKA : 医薬品結晶転移制御を目的とした赤外スペクトルと多変量解析に基づく研究, 第3回若手研究者シーズ発表会ー計測と分析ー, Jul. 2015.
121.	Hiroya Kubo, Masaki Takeuchi and Hideji TANAKA : 全リン定量のための各種リン化合物のCo3+による前処理, 第75回分析化学討論会, May 2015.
122.	Mari Osaki, Takeshi Ohgusu, Masaki Takeuchi and Hideji TANAKA : 内標準法を導入した振幅変調多重化フロー分析法, 第75回分析化学討論会, May 2015.
123.	Masaki Takeuchi, Kiichi Ishimine, Naoyuki Miki, Yuki Miyazaki and Hideji TANAKA : イオンクロマトグラフィーに用いる炭酸イオン除去デバイス, 日本分析化学会第64年会, May 2015.
124.	Hiroki Watanabe, Jun Sugiura, Hideji TANAKA and Masaki Takeuchi : 小型溶離液発生装置を用いる低圧イオンクロマトグラフィー, 第75回分析化学討論会, May 2015.
125.	Masaki Takeuchi, Miki Narita, Emako Takano, 吉岡薫 and Hideji TANAKA : 大気エアロゾルに含まれる過塩素酸イオンの分析, 第75回分析化学討論会, May 2015.
126.	Yuta Ohtsuka, Akira Itoh, Masaki Takeuchi and Hideji TANAKA : 医薬品配合剤原末の赤外スペクトルと粉末X線回折による定量的相関解析, 日本薬学会135年会, Mar. 2015.
127.	Akira Itoh, Yuta Ohtsuka, Masaki Takeuchi and Hideji TANAKA : カフェイン‐シュウ酸2:1共結晶のメカノケミカル合成における機械的エネルギーと温度の影響, 日本薬学会135年会, Mar. 2015.
128.	Hideji TANAKA, Takeshi Ohgusu, Kohji Inui, Haruka Yoshida, Katsuya Uchimoto and Masaki Takeuchi : 気節-非相分離振幅変調多重化フロー分析法の開発と応用, 日本薬学会135年会, Mar. 2015.
129.	Masaki Takeuchi, Kiichi Ishimine, Naoyuki Miki, Yuki Miyazaki and Hideji TANAKA : ミネラル炭酸水に含まれる陰イオンの分析, 日本薬学会135年会, Mar. 2015.
130.	Yuta Ohtsuka, Akira Itoh, Masaki Takeuchi and Hideji TANAKA : 粉末X線回折法とケモメトリックスに基づく医薬品原末中の多成分の同時定量, 日本分析化学会第63年会, Sep. 2014.
131.	Takeshi Ohgusu, Mari Osaki, Masaki Takeuchi and Hideji TANAKA : 振幅変調多重化フロー分析法; 内標準法の導入の検討, 日本分析化学会第63年会, Sep. 2014.
132.	Azumi Miyazaki, Masaki Takeuchi and Hideji TANAKA : 縮合リン酸の酸加水分解に対する金属イオンの影響, 日本分析化学会第63年会, Sep. 2014.
133.	Katsuya Uchimoto, Masaki Takeuchi and Hideji TANAKA : ミセル濃縮を利用した振幅変調フロー分析法, 日本分析化学会第63年会, Sep. 2014.
134.	Naoyuki Miki, Kiichi Ishimine, Hideji TANAKA and Masaki Takeuchi : Nafion tubeを用いたポストカラム濃縮法による陰イオンの高感度定量, 日本分析化学会第63年会, Sep. 2014.
135.	Kiichi Ishimine, Naoyuki Miki, Yuki Miyazaki, Hideji TANAKA and Masaki Takeuchi : Nafion tubeを用いた炭酸イオン除去装置, 日本分析化学会第63年会, Sep. 2014.
136.	Miki Narita, Hideji TANAKA and Masaki Takeuchi : イオンクロマトグラフィーを用いた環境中の過塩素酸イオン分析法の検討, 第20回分析化学若手セミナー, Jul. 2014.
137.	Naoya Tomiyasu, Hideji TANAKA and Masaki Takeuchi : ウェットデニューダー/ミストチャンバー法による水溶性酸性ガス/PM2.5の連続分析, 第20回分析化学若手セミナー, Jul. 2014.
138.	Yuta Ohtsuka, Saki Matsumura, Masaki Takeuchi and Hideji TANAKA : ATR-IRスペクトルの多変量解析に基づくヒドロキシプロピルセルロース水溶液による結晶転移抑制の研究, 第74回分析化学討論会, May 2014.
139.	Emako Takano, Kaoru Yoshioka, Hideji TANAKA and Masaki Takeuchi : Determination of perchlorate in river water based on ion chromatograph coupled with post-column concentrator, 第51 回フローインジェクション分析講演会, Nov. 2013.
140.	Haruka Yoshida, Koji Inui, Masaki Takeuchi and Hideji TANAKA : Determination of nitrite and nitrate ions in water samples by air segmented - amplitude modulated multiplexed flow analysis, 第51 回フローインジェクション分析講演会, Nov. 2013.
141.	Chiemi Sato, Mari Nakase, Shinji Abe, Hirofumi Shibata, Koichiro Tsuchiya, Hideji TANAKA and Mami Azuma : 生涯学習の必要性に目覚めさせる徳島大学の取組∼能動学習制度∼, 第52回日本薬学会·日本薬剤師会·日本病院薬剤師会中国四国支部学術大会, Oct. 2013.
142.	Nakagawa Shinya, Hideji TANAKA and Masaki Takeuchi : Nitric acid gas generator, 第19回分析化学若手セミナー, Aug. 2013.
143.	Kubo Hiroya, Kuritani Kazunori, Hideji TANAKA and Masaki Takeuchi : Pritreatment of phosphorus compounds with Co3+ for total phosphorus determination, 第19回分析化学若手セミナー, Aug. 2013.
144.	Takano Emako, Yoshioka Kaoru, Hideji TANAKA and Masaki Takeuchi : Behavior of perchlorate in atomospheric aerosol at Tokushima city, 第19回分析化学若手セミナー, Aug. 2013.
145.	Kazunori Kuritani, Hiroya Kubo, Azumi Miyazaki, Masaki Takeuchi and Hideji TANAKA : 全リン定量を目的とする電解発生Co3+を用いる各種リン化合物の迅速前処理法の開発, 第73回分析化学討論会, May 2013.
146.	Emako Takano, 吉岡薫, Hideji TANAKA and Masaki Takeuchi : 大気エアロゾル中粗大粒子および微小粒子に含まれる過塩素酸イオンの動態, 第73回分析化学討論会, May 2013.
147.	Takeshi Ohgusu, Katsuya Uchimoto, Masaki Takeuchi and Hideji TANAKA : 気節-振幅変調多重化フロー分析法によるリン酸イオンの定量, 第17回徳島地区分析技術セミナー, Dec. 2012.
148.	Yuki Miyazaki, 磯部貴陽, 大河内博, 緒方裕子, Hideji TANAKA and Masaki Takeuchi : 富士山南東麓における大気中酸性ガスの連続観測, 第50 回フローインジェクション分析講演会, Nov. 2012.
149.	Azumi Miyazaki, Kazunori Kuritani, Masaki Takeuchi and Hideji TANAKA : 全リン定量のためのCo3+前処理法の開発とFIA による評価, 第50 回フローインジェクション分析講演会, Nov. 2012.
150.	Yuki Miyazaki, Hideji TANAKA and Masaki Takeuchi : 炭酸除去デバイスの開発, 日本分析化学会第61年会, Sep. 2012.
151.	Jun Sugiura, Hideji TANAKA and Masaki Takeuchi : 中空キャピラリーカラムを用いた低圧イオンクロマトグラフィーの開発, 日本分析化学会第61年会, Sep. 2012.
152.	Takeshi Ohgusu, Katsuya Uchimoto, Masaki Takeuchi and Hideji TANAKA : リン酸イオンの定量を目的とする気節‐非相分離/振幅変調多重化フロー分析法, 日本分析化学会第61年会, Sep. 2012.
153.	Kohji Inui, Haruka Yoshida, Masaki Takeuchi and Hideji TANAKA : 気節‐非相分離/振幅変調多重化フロー分析法によるアンモニウムイオンの定量, 日本分析化学会第61年会, Sep. 2012.
154.	Masaki Takeuchi, Yuki Miyazaki and Hideji TANAKA : 徳島市における大気中酸性ガスの特徴, 第53回大気環境学会年会, Sep. 2012.
155.	Masaki Takeuchi, Yuki Miyazaki, 角田浩道 and Hideji TANAKA : 徳島市における大気中酸性ガスの高時間分解観測, 第72回分析化学討論会, May 2012.
156.	Hideji TANAKA, Kurokawa Yohei, Inui Koji, Yoshida Haruka and Masaki Takeuchi : Simultaneous Determination of Multiple Analytes by Amplitude Modulated Multiplexed Flow Analysis, 第49回フローインジェクション分析講演会, Dec. 2011.
157.	Masato Izumi, 渡辺瑞紀, 小畑智章, 戸田敬, Hideji TANAKA and Masaki Takeuchi : アニュラーデニューダーを用いた硫化水素ガス分析装置の開発, 第49回フローインジェクション分析講演会, Dec. 2011.
158.	Yuki Miyazaki, Hiromichi Tsunoda, Hideji TANAKA and Masaki Takeuchi : Development of Nafion membrane tube based carbonate removal device, 第49回フローインジェクション分析講演会, Dec. 2011.
159.	Ogusu Takeshi, Inui Koji, Masaki Takeuchi and Hideji TANAKA : Air Segmented - Amplitude Modulated Multiplexed Flow Analysis without Deaeration, 第49回フローインジェクション分析講演会, Dec. 2011.
160.	Masaki Takeuchi, Emako Takano, 吉岡薫 and Hideji TANAKA : 大気エアロゾルに含まれる過塩素酸イオンの連続測定, 第52回大気環境学会年会, Sep. 2011.
161.	Takeshi Ohgusu, Masaki Takeuchi and Hideji TANAKA : 気節-非相分離/振幅変調フロー分析法による高感度定量, 日本分析化学会第60年会, Sep. 2011.
162.	Yohei Kurokawa, Masaki Takeuchi and Hideji TANAKA : Amplitude modulated multiplexed flow analysis for simultaneous determination of chloride ions, The Secod Decennial Meeting Between The University of Tokuhsima and Soul National University on Pharmaceutical Sciences, Dec. 2010.
163.	Masaki Takeuchi, Kiichi Ishimine, Yusuke Toyama and Hideji TANAKA : ナフィオンチューブによる前濃縮, 2010年日本化学会西日本大会, Nov. 2010.
164.	上村剛史, Takeshi Ohgusu, Masaki Takeuchi and Hideji TANAKA : 振幅変調フロー分析法による微量リン酸イオンの定量, 第20回無機リン化学討論会, Oct. 2010.
165.	Hideji TANAKA : 流量変化に基づく分析法;フローレイショメトリーと振幅変調フロー分析法, 日本分析化学会第59年会, Sep. 2010.
166.	角田浩道, Hideji TANAKA and Masaki Takeuchi : ウエットデニューダーによるガス成分の捕集 -フィルター法，インピンジャー法，拡散スクラバー法との比較-, 日本分析化学会第59年会, Sep. 2010.
167.	吉岡薫, Yusuke Toyama, 加々美愛, Hideji TANAKA and Masaki Takeuchi : 大気エアロゾル中過塩素酸イオンの連続分析, 日本分析化学会第59年会, Sep. 2010.
168.	黒河洋平, Masaki Takeuchi, Akira Ohbuchi and Hideji TANAKA : 振幅変調多重化フロー分析法の原理と応用. 塩化物イオン, 鉄イオンの定量, 日本分析化学会第59年会, Sep. 2010.
169.	Masaki Takeuchi, 角田浩道, Hideji TANAKA, 田中傑 and 白水好美 : ウエットデニューダー/イオンクロマトグラフィーによる大気中酸性ガス成分の連続測定, 第51回大気環境学会年会, Sep. 2010.
170.	Hideji TANAKA, Kohji Inui and Masaki Takeuchi : 気節導入による振幅変調フロー分析法の高感度化, 第71回分析化学討論会, May 2010.
171.	角田浩道, 田中傑, 白水好美, Hideji TANAKA and Masaki Takeuchi : クリーンルームにおける酸性ガスの自動モニタリング, 第71回分析化学討論会, May 2010.
172.	白水好美, 田中傑, 並木則和, Masaki Takeuchi, Hideji TANAKA and 藤井修二 : ウエットデニューダ方式のアミンアンモニア自動モニタ, プレISCC2010空気清浄とコンタミネーションコントロール研究発表会, 2010.
173.	Hideji TANAKA, 上村剛司, Takeshi Ohgusu and Masaki Takeuchi : 振幅変調/ロックイン検出フロー分析法によるリン酸イオンの定量, 第48回フローインジェクション分析講演会, Nov. 2009.
174.	Tursunjan Aydan, Masaki Takeuchi and Hideji TANAKA : Spectrophotometric Determination of Anionic Surfactant Based on Ion-pair Formation with Methylene Blue in Reversed Flow Injection Mode., 第48回フローインジェクション分析講演会, Nov. 2009.
175.	上村剛司, Takeshi Ohgusu, Masaki Takeuchi and Hideji TANAKA : 振幅変調フロー分析法/マラカイトグリーン法による微量リン酸イオンの定量, 第19回無機リン化学討論会, Oct. 2009.
176.	吉岡薫, 外山祐介, 加々美愛, Hideji TANAKA and Masaki Takeuchi : エアロゾル中過塩素酸イオンのポストカラム濃縮, 日本分析化学会第58年会, Sep. 2009.
177.	Takuto Mima, Hirokazu Takayasu, Masaki Takeuchi and Hideji TANAKA : 振幅変調多重化フロー分析法によるFe(II)及びFe(III)の同時定量, 日本分析化学会第58年会, Sep. 2009.
178.	黒河洋平, Masaki Takeuchi and Hideji TANAKA : 振幅変調多重化フロー分析法の測定効率向上のための検討, 日本分析化学会第58年会, Sep. 2009.
179.	Masaki Takeuchi, Qingyang Li, Bingcheng Yang, Purnendu K. Dasgupta, Hideji TANAKA and Vincent E. Wilde : 容量デジタルコンバータによる非接触型電気伝導度検出, 第70回分析化学討論会, May 2009.
180.	Masaki Takeuchi, 角田浩道, Hideji TANAKA, 田中傑 and 白水好美 : ウエットデニューダー方式の酸性ガス自動モニタ, 第27回空気清浄とコンタミネーションコントロール研究大会, Apr. 2009.
181.	Hideji TANAKA, 上村剛史, Takeshi Ohgusu and Masaki Takeuchi : 水中の微量リンの定量を目的とした振幅変調フロー分析法の研究, 日本薬学会第139年会, Mar. 2009.
182.	Masaki Takeuchi, Rahmat SM Ullah, Purnendu K Dasagupta, Hideji TANAKA and Allen Williams : ウエット親水性フィルターによる大気中エアロゾル成分の連続測定, 第49回大気環境学会, Sep. 2008. (Keyword) エアロゾル
183.	Masaki Takeuchi, Jianzhong Li, Kavin J Morris, Hideji TANAKA and Purnendu K Dasgupta : 親水性膜デニューダーによる大気中ガス成分の連続測定, 第49回大気環境学会, Sep. 2008. (Keyword) デニューダー / ガス
184.	Hideji TANAKA, 黒河洋平, 上村剛史, Takuto Mima and Masaki Takeuchi : 振幅変調多重化フロー分析法の効率向上のための最適化, 日本分析化学会第57年会, Sep. 2008. (Keyword) フロー分析
185.	Masaki Takeuchi, Bingcheng Yang, Hideji TANAKA and Purnendu K Dasgupta : 低圧キャピラリーイオンクロマトグラフィー用ガスフリー溶離液発生器, 日本分析化学会第57年会, Sep. 2008. (Keyword) イオンクロマトグラフィー / 溶離液発生器
186.	Hideji TANAKA, Takuto Mima, Hitoshi Iida and Masaki Takeuchi : 多重制御流量比法のFe(II)およびFe(III)同時定量への応用, 第69回分析化学討論会, May 2008. (Keyword) フロー分析
187.	Xiangli Liu, Hideji TANAKA, Aiko Yamauchi, Bernard Testa and Hiroshi Chuman : Determination of lipophilicity by reversed-phase high-performance liquid chromatography (RP-HPLC), 第33回構造活性相関シンポジウム, Nov. 2005.
188.	Hideji TANAKA, 馬場勉 and 喜多川歩 : Flow ratiometryによる光度滴定, 第46回フローインジェクション分析講演会, Oct. 2005.
189.	Hideji TANAKA and 馬場勉 : ハイスループット光度滴定を目的とする可変および固定三角波制御flow ratiometry, 日本分析化学会第54年会, Sep. 2005.
190.	Hideji TANAKA, 馬場勉 and 喜多川歩 : 完全自動ハイスループット滴定を目的とするFLOW RATIOMETRYの研究, 第6回長井長義記念シンポジウム, Jul. 2005.
191.	Liu Xiangli, Hideji TANAKA and Hiroshi Chuman : 疎水性評価を目的とした逆相高速液体クロマトグラフィーの構造-保持値の定量的相関解析, 第32回構造活性相関シンポジウム, Nov. 2004.
192.	Hideji TANAKA and 馬場勉 : フィードバック制御および固定三角波制御を併用した流量比法によるハイスループット滴定, 第45回フローインジェクション分析講演会, Nov. 2004.
193.	Hideji TANAKA, Xiangli Liu, 川端大地, Hiroshi Chuman and 山上知佐子 : 段階的流量比法/非相分離吸光光度検出による揮発性物質の配分係数の測定, 第45回フローインジェクション分析講演会, Nov. 2004.
194.	Liu Xiangli, Hideji TANAKA and Hiroshi Chuman : Quantitative structure-retention relationships on special RP-HPLC stationary phases used for lipophilicity measurement, 第32回構造活性相関シンポジウム, Nov. 2004.
195.	Hideji TANAKA, 村田武史, Hiroshi Chuman and 山上知佐子 : Flow ratiometry．原理および分配係数log P，酸解離定数pKa測定への応用, 日本薬学会第 124年会, Mar. 2004.
196.	Hideji TANAKA : Flow ratiometryの原理と分配係数/解離定数測定へのその応用, 第8回徳島地区分析技術セミナー, Mar. 2004.
197.	Hideji TANAKA, 橘貴寛 and 小田梨紗 : フィードバック制御流量比法による酸/塩基解離定数の簡易·迅速測定, 第44回フローインジェクション分析講演会, Nov. 2003.
198.	森充史, 山上知佐子, 赤松美紀, 藤田稔夫, Hideji TANAKA and Hiroshi Chuman : 分配係数log Pの非経験的予測(4):ペプチドへの適用, 第31回構造活性相関シンポジウム, Nov. 2003.
199.	Hideji TANAKA, 小田梨紗, 橘貴寛 and Hiroshi Chuman : フィードバック制御流量比法による当量点の自動判定に基づく酸解離定数の測定, 日本分析化学会第52年会, Sep. 2003.
200.	森充史, Hideji TANAKA and Hiroshi Chuman : 分配係数log Pの非経験的予測(3):log Pを支配する因子の物理化学的解釈, 日本コンピュータ化学会2003春期年会, May 2003.
201.	橘貴寛, 有塚桐子, Hideji TANAKA and Hiroshi Chuman : フィードバック制御流量比法による弱酸の解離定数の測定-システムの改良-, 第64回分析化学討論会, May 2003.
202.	Hideji TANAKA : Flow ratiometryの原理と分配係数等の迅速測定への応用, 神戸薬科大学セミナー, Mar. 2003.
203.	Hideji TANAKA, Hiroshi Chuman and 有塚桐子 : フィードバック制御流量比法による弱酸の解離定数の測定, 第42回フローインジェクション分析講演会, Nov. 2002.
204.	森充史, Hideji TANAKA, 山上知佐子, 藤田稔夫 and Hiroshi Chuman : 分配係数log Pの非経験的予測(2):水素結合のlog Pへの影響, 第30回構造活性相関シンポジウム, Nov. 2002.
205.	橘貴寛, 有塚桐子, Hideji TANAKA and Hiroshi Chuman : 流量比法に基づくクロロホルム/水分配係数の測定, 日本分析化学会第51年会講演, Sep. 2002.
206.	有塚桐子, 橘貴寛, Hideji TANAKA and Hiroshi Chuman : 流量比法に基づく各種平衡定数の決定, 日本分析化学会第51年会講演, Sep. 2002.
207.	Hideji TANAKA, 橘貴寛, 有塚桐子, 山本優子 and Hiroshi Chuman : 流量比法に基づくフェノール置換体の分配係数の測定, 日本分析化学会第50年会, Nov. 2001.
208.	有塚桐子, 橘貴寛, Hideji TANAKA and Hiroshi Chuman : 連続フロー分析法によるフェノール置換体の分配係数の測定, 第29回構造活性相関シンポジウム, Nov. 2001.
209.	山本優子, 有塚桐子, Hideji TANAKA and Hiroshi Chuman : 体積比変化を利用したフラスコ振とう法による分配係数の測定, 第29回構造活性相関シンポジウム, Nov. 2001.
210.	森充史, Hideji TANAKA and Hiroshi Chuman : 分配係数logPの非経験的予測, 第29回構造活性相関シンポジウム, Nov. 2001.
211.	橘貴寛, 山本優子, Hideji TANAKA and Hiroshi Chuman : 連続フロー分析法(流量比法)に基づく分配係数の測定, 第29回構造活性相関シンポジウム, Nov. 2001.
212.	Hideji TANAKA, 松村仁美 and Hiroshi Chuman : 流量比法に基づく分配係数の測定, 第38回フローインジェクション分析研究会, Nov. 2000.
213.	Hideji TANAKA and Hiroshi Chuman : フロー分析法(流量比)に基づく分配係数の測定, 第28回構造活性相関シンポジウム, Oct. 2000.
214.	Hideji TANAKA, Purnendu K. Dasgupta and Jimin Huang : フィードバック制御流量比法に基づく自動連続滴定法, 日本分析化学会第49年会, Sep. 2000.
215.	Hideji TANAKA, Purnendu K. Dasgupta and Jimin Huang : 固定三角波制御流量比法に基づく自動連続滴定法, 日本分析化学会第49年会, Sep. 2000.
216.	Hideji TANAKA : フィードバック制御流量比法によるフロー滴定法, 第6回中国四国支部分析化学若手セミナー, Aug. 2000.
217.	伊藤篤史, 熊沢智, 新関考高, 最勝寺俊英, 唐沢真美 and Hideji TANAKA : トリアゾリルメチルシクロペンタノール誘導体の構造活性相関-水酸基の役割-, 日本農薬学会第25回大会, Mar. 2000.
218.	Hideji TANAKA, 木村静恵 and 馬木美樹子 : 光誘起化学発光検出を用いるフローインジェクション分析法と局方医薬品定量への応用, 日本薬学会第119年会, Mar. 1999.
219.	Hideji TANAKA and 木村静恵 : 光誘起化学発光法のFIAへの応用, 第33回フローインジェクション分析講演会, Dec. 1998.
220.	Hideyoshi Morita and Hideji TANAKA : 黒鉛炉原子吸光法によるカドミウムと鉛の同時定量のための条件検討と市販飲物試料への応用, 日本分析化学会第47年会, Oct. 1998.
221.	Hideyoshi Morita, 古閑みゆき, Hideji TANAKA and 岡本研作 : 黒鉛炉原子吸光法による鉛およびカドミウムの同時定量, 第59回分析化学討論会, May 1998.
222.	Hideji TANAKA, 野口由起子, Hideyoshi Morita, 下村滋 and 岡本研作 : フローインジェクション/Co3+常温酸化分解法に基づくCOD測定, 日本薬学会第118年会, May 1998.
223.	Hideji TANAKA, Hideyoshi Morita, 下村滋 and 岡本研作 : 三価コバルトのオンライン電解発生法をFIAへの応用; COD測定及び有機リン定量, 日本分析化学会第46年会, Oct. 1997.
224.	Hideji TANAKA : タンタル被膜黒鉛管を用いるガリウムの原子吸光定量, 第3回中国四国支部分析化学若手セミナー, Aug. 1997.
225.	Hideji TANAKA : 酸化還元試薬のフロー電解調製法と流れ分析への応用, 中国四国支部分析化学講演会, Jan. 1997.
226.	北川晋士, 岡本研作, Hideji TANAKA, 江藤徹 and 松原道夫 : 同位体希釈/ICP質量分析法による生体試料中の微量白金の高精度定量, 日本分析化学会第45年会, Sep. 1996.
227.	Hideji TANAKA : 電解調製酸化還元試薬を用いる前処理法の流れ分析への応用, 日本分析化学会第45年会, Sep. 1996.
228.	Hideji TANAKA, 受川麻紀, 岡本研作, Hideyoshi Morita and 下村滋 : コバルト(III)イオンを用いる各種有機化合物の常温·迅速酸化前処理, 日本分析化学会第45年会, Sep. 1996.
229.	Hideyoshi Morita, 喜多知子, Mayumi Umeno, 北川晋士, Hideji TANAKA and 下村滋 : 医療器具類から溶出してくる元素の分析とその解析, 第57回分析化学討論会, May 1996.
230.	Hideji TANAKA, 皿田直美, 岡本研作, Hideyoshi Morita and 下村滋 : 三価コバルトイオンを用いる各種有機化合物の迅速酸化分解, 第57回分析化学討論会, May 1996.
231.	北川晋士, Hideji TANAKA, 岡本研作, 江藤徹 and 松原道夫 : ICP質量分析法による生物試料中の微量白金の定量, 第57回分析化学討論会, May 1996.

Et cetera, Workshop:

1.	Olbemo Kebede Selass, Masaki Takeuchi and Hideji TANAKA : Digital-movie-based flow colorimetry for pH measurement with universal indicators, 2023 Tokushima Bioscience Retreat, Sep. 2023.
2.	Hideji TANAKA : 生きた証, ぶんせき, Vol.2022, No.10, 369, Oct. 2022. (Keyword) 学会機関誌巻頭言
3.	Hideji TANAKA : 有効数字と誤差の伝播, 第55回中国四国支部分析化学講習会, Jun. 2018.
4.	Yuta Ohtsuka, Akira Itoh, Masaki Takeuchi and Hideji TANAKA : 医薬品結晶多形におけるビッグデータ回帰予測, 課題提案型ワークショップ「ビッグデータの利活用について考える」, Jun. 2016.
5.	Hideji TANAKA : Analytical Sciences, ぶんせき, Vol.2014, No.9, 512, Sep. 2014.
6.	Hideji TANAKA : (巻頭言) FIAの成熟と発展の先に, Journal of Flow Injection Analysis, Vol.29, No.2, 71, Dec. 2013. (Link to Publication Site) ● Publication site (DOI): 10.24688/jfia.29.2_71 (Link to Search Site for Scientific Articles) ● Search Scopus @ Elsevier (DOI): 10.24688/jfia.29.2_71 (DOI: 10.24688/jfia.29.2_71)
7.	Hideji TANAKA : FIAの発展と成熟の先に(巻頭言), Journal of Flow Injection Analysis, Vol.29, No.2, 71, Dec. 2012.
8.	Hideji TANAKA : 分析化学への想い, 日本の分析化学者(創立六十周年記念誌) (第4部「次世代を担う人材」の薬学分野11名の中に選ばれ,執筆), 251, May 2012.
9.	Hideji TANAKA : 流量変化を利用するフロー分析法の創案, HBS交流月例セミナー, Jul. 2011.
10.	Kurokawa Yohei, Masaki Takeuchi and Hideji TANAKA : Amplitude modulated multiplexed flow analysis for simultaneous determination of chloride ions, The Secod Decennial Meeting Between The University of Tokuhsima and Soul National University on Pharmaceutical Sciences, Dec. 2010.

Report:

1.	Yoshihiko Ueno, Yosuke Seki, Ryuji Yorioka, Yuishin Izumi, Takeshi Nikawa, Reiko Okahisa, Naozumi Ishimaru, Kazumi Ozaki, Hideji TANAKA, Kenji Terada, Tamotsu Tanaka, Ray S. Furuya and Maiko Kamioka : 令和3年度徳島大学高等教育研究センターアドミッション部門報告書, 令和3年度徳島大学高等教育研究センターアドミッション部門報告書, Mar. 2022.
2.	Yoshihiko Ueno, Yosuke Seki, keiji Ido, Yasushi Takagi, Hiroshi Sakaue, Hitoshi Ikushima, Hideki Fujii, Yasuhiko Shirayama, Hideji TANAKA, Masatake Kawada, Hideaki Nagamune, Ray S. Furuya and Maiko Kamioka : 令和元年度徳島大学高等教育研究センターアドミッション部門報告書, 令和元年度徳島大学高等教育研究センターアドミッション部門報告書, Mar. 2020.
3.	Hideji TANAKA : 第50回フローインジェクション分析講演会, ぶんせき, Vol.2013, No.2, 111-112, Feb. 2013.

Grants-in-Aid for Scientific Research (KAKEN Grants Database @ NII.ac.jp)

Development of Video Imaging Based Colorimetry Using Digital Microscope and Its Application to Flow Analysis (Project/Area Number: 21K05127 )
Development of triangular-wave controlled amplitude-modulated flow analysis and its application to high concentration sample analysis with no dilution. (Project/Area Number: 18K05173 )
High time-resolution monitoring of transboundary air pollutants at the summit of Mt. Fuji (Project/Area Number: 17K00521 )
Air segmented - feedback based flow ratiometry for super high throughput titration (Project/Area Number: 15K07889 )
Observation of transboundary acid pollutants at the summit of Mt. Fuji by parallel-plate wet denuder and mist-chamber based particle collector techniques (Project/Area Number: 26340006 )
Development and application of air segmented - amplitude modulated multiplexed flow analysis with no phase separation (Project/Area Number: 24550101 )
Study on Amplitude Modulated Multiplexed Flow Analysis and Its Improvement to Analysis of Practicality (Project/Area Number: 21550083 )
New strategic study on advanced utilization of rare phosphorus (Project/Area Number: 20241020 )
新規フロー分析法「多重制御/フーリエ変換flow ratiometry」の提案 (Project/Area Number: 19655027 )
Study on flow ratiometry for fully automated high-throughput titration (Project/Area Number: 17590033 )
Development of hydrophobic interaction field for rational drug design (Project/Area Number: 14572094 )
Development of system for measurement of distribution coefficients based on flow ratiometry (Project/Area Number: 14540560 )
トレーサビリティ確立の手段としての安定同位体希釈／質量分析法の評価に関する研究 (Project/Area Number: 09650891 )
Study on Rapid Pretreatment Method with Cobalt (III) Ions for Speciation of phosphorus in Environmental Samples (Project/Area Number: 06640789 )
3価コバルトを酸化剤とする有機金属化合物等の連続分解/無毒化フローシステムの開発 (Project/Area Number: 05278239 )
Search by Researcher Number (40207121)

Professor : TANAKA, Hideji

Research

Personal Web Page

Field of Study

Subject of Study

Book / Paper

Book:

Academic Paper (Judged Full Paper):

Review, Commentary:

Proceeding of International Conference:

Proceeding of Domestic Conference:

Et cetera, Workshop:

Report:

Grants-in-Aid for Scientific Research (KAKEN Grants Database @ NII.ac.jp)