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Kikuo Oikawa

Niigata University of Pharmacy and Applied Life Sciences

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Publication

Featured researches published by Kikuo Oikawa.

Journal of Chromatography A | 1985

Simultaneous determination of iron(II) and -(III) by ion chromatography with post-column reaction

Hiroko Saitoh; Kikuo Oikawa

Abstract A method for the simultaneous determination of Fe(II) and Fe(III) which combines ion chromatography and a post-column reaction is described. Using 0.05 M tartaric acid (pH 4.5) or 0.15 M lactic acid (pH 4.5) as eluent, Fe(II) and Fe(III) were first separated on a column (50 × 4.6 mm I.D.) packed with cation-exchange resin, and then transferred to a post-column reactor. The colour formation of Fe(II) with bathophenanthrolinedisulphonic acid disodium salt was then observed at 530 nm. Fe(III) was reduced to Fe(II) by ascorbic acid, and then the colour formation was again observed.

Journal of Health Science | 2002

Science of Bamboo Charcoal: Study on Carbonizing Temperature of Bamboo Charcoal and Removal Capability of Harmful Gases

Takashi Asada; Shigehisa Ishihara; Takeshi Yamane; Akemi Toba; Akifumi Yamada; Kikuo Oikawa

Journal of Health Science | 2006

Ammonia Adsorption on Bamboo Charcoal with Acid Treatment

T. Asada; Takashi Ohkubo; Kuniaki Kawata; Kikuo Oikawa

Journal of Health Science | 2004

Study of Removal Effect of Bisphenol A and β-Estradiol by Porous Carbon

Takashi Asada; Kikuo Oikawa; Kuniaki Kawata; Shigehisa Ishihara; Tsutomu Iyobe; Akifumi Yamada

Journal of Chromatography A | 2007

Simple one-step extraction and cleanup by pressurized liquid extraction for gas chromatographic–mass spectrometric determination of pesticides in green leafy vegetables

Tomomi Tanaka; T. Hori; T. Asada; Kikuo Oikawa; Kuniaki Kawata

Journal of Chromatography A | 2005

Determination of pesticides in compost by pressurized liquid extraction and gas chromatography–mass spectrometry

Kuniaki Kawata; T. Asada; Kikuo Oikawa

Journal of Health Science | 2000

Antibacterial Activity of Calcined Shell Calcium Prepared from Wild Surf Clam

Kikuo Oikawa; Takashi Asada; Kazuo Yamamoto; Hiroyuki Wakabayashi; Manabu Sasaki; Makoto Sato; Junji Matsuda

Journal of Chromatography A | 1983

Determination of tetramethylammonium ion in shellfish by ion chromatography

Hiroko Saitoh; Kikuo Oikawa; Tooru Takano; Katsura Kamimura

Journal of AOAC International | 2005

Multiresidue Determination of Pesticides in Sediment by Ultrasonically Assisted Extraction and Gas Chromatography/Mass Spectrometry

Kuniaki Kawata; Takashi Asada; Kikuo Oikawa; Akiko Tanabe

Bulletin of Environmental Contamination and Toxicology | 2009

Distribution of Polycyclic Aromatic Hydrocarbons and n-Alkanes in Surface Sediments from Shinano River, Japan

T. Hori; Naoya Shiota; T. Asada; Kikuo Oikawa; Kuniaki Kawata

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Kuniaki Kawata

Niigata University of Pharmacy and Applied Life Sciences

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T. Asada

Niigata University of Pharmacy and Applied Life Sciences

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Takashi Asada

Doshisha University

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T. Hori

Niigata University of Pharmacy and Applied Life Sciences

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Akifumi Yamada

Nagaoka University of Technology

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Akiko Tanabe

Niigata University of Pharmacy and Applied Life Sciences

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Shigehisa Ishihara

Kyoto University

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K. Nissato

Niigata University of Pharmacy and Applied Life Sciences

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M. Iwashita

Niigata University of Pharmacy and Applied Life Sciences

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N. Shiota

Niigata University of Pharmacy and Applied Life Sciences

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