Sensitization of Luminol Chemiluminescence with Complexing Agents and Surfactants in Sequential Injection Analysis

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  • Kanzaki Hiroyuki
    Department of Chemistry and Biochemistry, Graduate School of Natural Science and Technology, Okayama University
  • Takayanagi Toshio
    Department of Chemistry and Biochemistry, Graduate School of Natural Science and Technology, Okayama University

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Other Title
  • ルミノール化学発光を検出法とするシーケンシャルインジェクション分析における錯化剤及び界面活性剤の増感効果
  • ルミノール カガク ハッコウ オ ケンシュツホウ ト スル シーケンシャルインジェクション ブンセキ ニ オケル サクカザイ オヨビ カイメン カッセイザイ ノ ゾウカン コウカ

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Abstract

Some complexing agents and surfactants sensitize luminol chemiluminescence (CL) with Fe(III) or Fe(II) as a catalyst ; also the effect of the sensitizing reagents on the CL intensity was examined in sequential injection analysis (SIA). Solutions of luminol, H2O2 and a sample solution containing Fe(III) or Fe(II) were sequentially introduced into a holding coil, and the zones of the sucked solutions were immediately propelled to a CL detection cell ; the CL intensity was measured. In the case of the complexing agents as additives, tartrate and oxalate ions in the sample solution were most effective to improve the CL intensity. When surfactants were used as additives, the chemiluminescence was sensitized over the critical micelle concentrations of cationic cetyltrimethylammonium bromide and anionic sodium dodecylsulfate. Sensitization with the complexing agents and the surfactants in SIA are much more effective than in flow injection analysis. Since mixing of the sucked zones is not sufficient in SIA, the chemiluminescence would have been effectively sensitized.

Journal

  • BUNSEKI KAGAKU

    BUNSEKI KAGAKU 59 (8), 715-719, 2010

    The Japan Society for Analytical Chemistry

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