氯乙酸类化合物在离子色谱中保留时间机理探讨

Study on the Mechanism of Retention time of Chloroacetates with Ion Chromatography

本文采用抑制电导检测离子色谱分析的方法 ,对乙酸、一氯乙酸、二氯乙酸、三氯乙酸在不同组成和 pH值的淋洗液下进行测定 ,定性的分析了淋洗液pH值、样品 pKa值及其水合阴离子半径对保留时间的影响。

In this work we developed a suppressed conductivity ion chromatographic method, for determining acetate, chloroacetate, dichloroacetate, trichloroacetate with eluents of different content and pH value. The effects of the pH value of eluent, the pKa of the sample and the radius of the anion on the retention time were analyzed qualitatively.