离子色谱法测定液碱中Cl^-、ClO^(3-)、SO_4^(2-)含量

Determination of Cl^-, ClO^(3-) and SO_4^(2-) in Liquid Alkali by Ion Chromatography

本文建立了用离子色谱法同时测定液碱中Cl^-、ClO^(3-)、SO_4^(2-)含量的分析方法。实验采用亲水性较强的阴离子交换分离柱,电导检测器,碳酸钠和碳酸氢钠混合溶液为淋洗液。样品前处理通过H型预处理柱后直接进样测定。该方法主要用于化工产品液碱中Cl^-、ClO^(3-)、SO_4^(2-)含量的快速分析,具有操作简便、快速、灵敏度高等特点。

In this paper, an analytical method for determination of Cl^-,ClO^3- and SO4^2-simultaneously in liquid alkali by ion chromatography was established. Selected chromatographic conditions： separating by a strong affinity anion exchange column, conductivity detector, sodium carbonate and sodium bicarbonate were adopted as eluent solution. The method can meet the requirements of rapid detection of Cl^-,ClO^3- and SO4^2- ions in the liquid alkali products of chemical plants. This method is simple and rapid with high sensitivity.