Utilization of Ion-Exclusion Chromatography for the Quality Test of Water Purifications of Photocatalytic Environmental Materials

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  • Mori Masanobu
    Department of Chemistry and Chemical Biology, Graduation School of Engineering, Gunma University
  • Itabashi Hideyuki
    Department of Chemistry and Chemical Biology, Graduation School of Engineering, Gunma University
  • Tanaka Kazuhiko
    Division of Development Science, Graduate School for International Development and Cooperation, Hiroshima University

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Other Title
  • 光触媒環境材料の水質浄化性能試験におけるイオン排除型イオンクロマトグラフィーの利用
  • ヒカリ ショクバイ カンキョウ ザイリョウ ノ スイシツ ジョウカ セイノウ シケン ニ オケル イオン ハイジョガタ イオン クロマトグラフィー ノ リヨウ

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Abstract

A quality test for water purification of TiO2-photocatalyst coated materials (photocatalytic materials) has been observed using ion-exclusion chromatographic methods. Ion-exclusion chromatography has been used to decrease the carboxylate ion and the formation of its products in photooxidation process of a carboxylic acid, e.g., propionic or butyric acids, on the time-dependency of UV irradiation. Ion-exclusion/cation-exchange chromatography has been used to determine relationships between the decrease of an aliphatic amine and the formation of ammonium and nitrate ions. In a quality test standardized in Japan, dimethylsulfoxide (DMSO) was adopted as the starting sample because of stoichiometric oxidation with an OH radical generated from TiO2. A fundamental study on the photodegradation of DMSO was provided by ion-exclusion/adsorption chromatography. Also, in this paper, ion-exclusion chromatographic methods with post-column reactions are described for the detections of aliphatic carboxylate, carbonate, phosphate, and silicate ions in quality tests for photocatalytic materials.

Journal

  • BUNSEKI KAGAKU

    BUNSEKI KAGAKU 59 (7), 565-578, 2010

    The Japan Society for Analytical Chemistry

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