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Hiroshi Nishioka

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Publication

Featured researches published by Hiroshi Nishioka.

Journal of environmental conservation engineering | 1997

Flow injection analysis of ammonium ion by using thymol

Hiroshi Nishioka; Tetsu Kumagai

水中のアンモニウムイオンをフローインジェクション法により定量する方法について検討した.蒸留水はキャリアー流として1ml/minの流速で送液され, これに100μlの試料溶液を注入する.1.2%水酸化ナトリウム水溶液と4%チモール溶液も1ml/minの流速で試薬流として送液され, 反応コイル (5m, 80℃) 中でインドフェノール型化合物が生成する.この吸光度を676nmで測定する.検量線の直線性は良好で (r=0.9997) , 5mg/lのアンモニウムイオンの10回の繰り返し注入における相対標準偏差は0.62%であった.本法によって1時間当たり60試料の分析が可能である.

Microchemical Journal | 1994

Extraction-Spectrophotometric Determination of Palladium with 3-Thiophenaldehyde-4-phenyl-3-thiosemicarbazone

Katsuya Uesugi; L.J. Sik; Hiroshi Nishioka; Tetsu Kumagai

Oriental journal of chemistry | 2001

The Prediction of Chemical Oxygen Demand (Cod) in Waste Water by Uv-Visible Absorption Spectrum – Neural Network

Yasunobu Kato; Tetsu Kumagai; Hiroshi Nishioka; Yosohiro Sugie

Bunseki Kagaku | 1999

Prediction of chemical oxygen demand by ultra-violet visible absorption spectrum-partial least squares

Yasunobu Kato; Tetsu Kumagai; Shigeroku Yamaguchi; Hiroshi Nishioka

Journal of Japan Society on Water Environment | 2002

The Distribution of Nonylphenol in the Water Environments of Harimanada in the Seto Inland Sea, Japan.

Yasunobu Kato; Tetsu Kumagai; Hiroshi Nishioka; Yosohiro Sugie

Bunseki Kagaku | 1985

Determination of trace amounts of heavy metals in waters by coprecipitation concentration and X-ray fluorescence spectrometry.

Hiroshi Nishioka; Yoshimichi Maeda; Akio Yoneda; Takatugu Azumi

Developments in Chemical Engineering and Mineral Processing | 2008

Flow Injection Analysis for Aluminium using 3‐Hydroxy‐4′‐Chloroflavone

Hiroshi Nishioka

Analytical Sciences/Supplements Proceedings of IUPAC International Congress on Analytical Sciences 2001 (ICAS 2001) | 2002

Solvent Extraction of Metal Picrates with Calix[4]arene Derivatives

Mauro Mocerino; Kenji Mishima; Hiroshi Nishioka; Akio Yoneda; Mikio Ouchi

Journal of environmental conservation engineering | 2000

Investigations of Collecting Ability of Metal Ions in Water with Chemically Treated Tea Leaf

Hiroshi Nishioka; Tetsu Kumagai; Yasunobu Kato

Journal of environmental conservation engineering | 1996

Flow injection analysis of selenium by using 4,5-dimethyl-o-phenylenediamine.

Hiroshi Nishioka; Yasushi Okada; Tetsu Kumagai; Katsuya Uesugi

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Tetsu Kumagai

University of Hyogo

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Kenji Mishima

Fukuoka University

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Mikio Ouchi

University of Hyogo

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Mauro Mocerino

Curtin University

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