A Miniaturized FIA System for the Determination of Residual Chlorine in Environmental Water Samples

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  • JIN Jiye
    Department of Chemistry, Faculty of Science, Shinshu University
  • SUZUKI Yasutada
    Department of Material Science and Technology, Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi
  • ISHIKAWA Naoyoshi
    Department of Chemistry, Faculty of Engineering, Gifu University
  • TAKEUCHI Toyohide
    Department of Chemistry, Faculty of Engineering, Gifu University

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  • Miniaturized FIA System for the Determination of Residual Chlorine in Environmental Water Samples

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Abstract

The present study was aimed at developing a portable miniaturized FIA system with a two-electrode based amperometric detector for on-site monitoring of residual chlorine in environmental samples. The electrode potential control and current data collection were conducted with a home-designed potentiostat with a size of 150 × 100 × 40 mm and the weight of 350 g. It was confirmed that the amperometric response increased in proportion to the chlorine concentration up to 5 μg/ml, and the detection limit for chlorine was 0.05 μg/ml. Besides a drastic reduction in the size of the analytical system, such miniaturization achieved the advantages of increased speed, minimal mobile-phase consumption, and high sensitivity. The proposed method was successfully applied to the determination of residual chlorine in samples of pool water and tap water. The results were well agreed with those obtained by the N,N-diethyl-p-phenylenediamine (DPD) photometric method.

Journal

  • Analytical Sciences

    Analytical Sciences 20 (1), 205-207, 2004

    The Japan Society for Analytical Chemistry

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