Effects of various bases in eluents on appearance of system peaks in ion chromatography.

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  • HAMADA Naoki
    Analytical Applications Department, Shimadzu Corporation
  • YAGI Takao
    Analytical Applications Department, Shimadzu Corporation

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Other Title
  • イオンクロマトグラフィーにおけるシステムピークの保持時間に及ぼす移動相添加塩基種の影響
  • イオン クロマトグラフィー ニ オケル システム ピーク ノ ホジ ジカン ニ

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Description

System peaks can be observed in nonsuppressor type anion chromatography using low pH eluent (pH<7). Since the analysis time depends on the elution time of the system peaks, methods to control the elution time of system peaks were studied. Usually, various bases are added to the mobile phase for pH control. It was observed that approximately linear relationship exists between the elution time of the system peak and acid dissociation constant (pKa) of the base. And the elution time of system peak could be freely controlled by changing component ratio of two different bases.

Journal

  • BUNSEKI KAGAKU

    BUNSEKI KAGAKU 39 (7), 411-414, 1990

    The Japan Society for Analytical Chemistry

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