Study of the use of phthalate solution as an eluent in indirect photometric ion chromatography.

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  • FUJIMURA Kazuyoshi
    Department of Industrial Chemistry, Faculty of Engineering, The University of Tokyo
  • WATANABE Noriyuki
    Department of Industrial Chemistry, Faculty of Engineering, The University of Tokyo
  • SAWADA Tsuguo
    Department of Industrial Chemistry, Faculty of Engineering, The University of Tokyo

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Other Title
  • 間接紫外吸収検出イオンクロマトグラフィーに用いるフタル酸溶離液の検討
  • カンセツ シガイ キュウシュウ ケンシュツ イオン クロマトグラフィー ニ モ

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Description

A study to find a better mobile phase for use in the rapid determination of inorganic anions such as fluoride, chloride, nitrite, phosphate, nitrate and sulfate ions by indirect photometric ion chromatography is presented. The eluent optimized was a weak-alkaline (pH 7.3) buffer solution containing 0.7 mM potassium hydrogenphthalate-0.1 mM sodium tetraborate-0.5 mM boric acid-0.1 mM HEPPS-0.05 mM sodium hydrogencarbonate-5 % butanol. The problem of the system peak otherwise encountered was eliminated by judicious choice of the alkalinity of the buffer solution. The eluent did not show any pH drift typically caused by dissolution of carbon dioxide, and was able to separate the phosphate ion completely from the chloride. Whole anions above described were determined within 15 min.

Journal

  • BUNSEKI KAGAKU

    BUNSEKI KAGAKU 43 (3), 237-240, 1994

    The Japan Society for Analytical Chemistry

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