Determination of Chloracetic Acids in Drinking Water by Ion Chromatography Using Silver Oxide as Precipitant Eliminating Interference of Chlorate in Matrix

被引：8

作者：

Fu Hou-Tun ^{[1
]}

Zhao Li-Min ^{[1
]}

Luo Man ^{[1
]}

Zhang Hong-Yu ^{[2
]}

Zhang Jie ^{[2
]}

机构：

[1] Jianghan Univ, Coll Chem & Environm Engn, Wuhan 430056, Peoples R China

[2] Wuhan Drinking Water Co, Wuhan 430046, Peoples R China

来源：

CHINESE JOURNAL OF ANALYTICAL CHEMISTRY | 2008年 / 36卷 / 10期

关键词：

Ion chromatography; chloroacetic acids; chlorate; silver oxide; drinking water;

D O I：

10.1016/S1872-2040(08)60076-6

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A method was developed for the simultaneous determination of mono-, di- and tri-chloroacetic acids in drinking water by ion chromatography with large volume direct injection, combined with a novel method that could eliminate interference of a large amount of chloride ion in matrix with silver oxide as precipitant and a large amount of sulfate ion in, matrix with barium hydroxide as precipitant. With a medium high capacity, hydrophobic anion IonPac AS14HC column and sodium hydroxide as eluent, the three chloroacetic acid (CAAs) as well as chloride and sulfate could be separated well and determined within 40 min by gradient elution. A total of 500 mu L sample loop was used. The detection limits for the three CAAs were 3.7 mu g/L, 3.6 mu g/L, 35.4 mu g/L in turn. The spiked recoveries for the three CAAs were 91.5% - 102%.

引用

页码：1407 / 1410

页数：4