Determination of Chemical Reactivity of Chlorine Dioxide by Contiunous Flow Method with Membrane-Separation

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  • AOKI Toyoaki
    Laboratory of Environmental Chemistry, College of Engineering, University of Osaka Prefecture;
  • OKUBO Junta
    Laboratory of Environmental Chemistry, College of Engineering, University of Osaka Prefecture;
  • MUNEMORI Makoto
    Laboratory of Environmental Chemistry, College of Engineering, University of Osaka Prefecture;

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Other Title
  • 連続膜分離分析法を用いた二酸化塩素の化学反応性の測定
  • Determination of chemical reactivity of chlorine dioxide by continuous flow method with membrane-separation.

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Description

A method is proposed for continuous flow determination of chlorine dioxide in water and is applied to the measurements of its chemical reactivity. The method is based on the separation of chlorine dioxide through a microporous PTFE tube and absorbance measurment at 360 nm (λmax) . The detection limit (S/N=3) was 2.7 × 10-7M. The response time was 1 min with a microporous PTFE tube of 20 cm in length. The rate constants for the reactions between the chlorine dioxide and a series of compounds were determined at pH 6.89 (25°C). The reaction rates with amino acids and organic acids were low, while those with albumin and humic acid were high.

Journal

  • NIPPON KAGAKU KAISHI

    NIPPON KAGAKU KAISHI 1989 (2), 292-295, 1989-02-10

    The Chemical Society of Japan

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