饮用水中6种卤乙酸的离子色谱_电导检测法.pdfVIP

706 环境与健康杂志2010 年8 月第27 卷第8 期 J Environ Health, August 2010, Vol．27, No．8 · · 【论著】 （ ） 文章编号：1001-5914 2010 08-0706-03 饮用水中6 种卤乙酸的离子色谱- 电导检测法 王心宇，魏建荣，陈斌生，韩志宇 摘要：目的 建立生活饮用水中6 种卤乙酸（HAAS）的离子色谱- 电导检测法。方法 选用离子色谱仪，Dionex IonPac AS19 阴离子色谱柱；以KOH 溶液梯度淋洗，可同时检测一氯乙酸（MCAA）、二氯乙酸（DCAA）、三氯乙酸（TCAA）、一溴乙 酸（MBAA）、二溴乙酸（DBAA）、三溴乙酸（TBAA）以及水中多种常规阴离子。结果 6 种卤乙酸在0.01~1.0 mg/L 的浓度范 围内相关系数均可达0.999 6 以上，DCAA 和TCAA 的最小检出限分别为0.97 μg/L 和1.0 μg/L 。RSD 为1.9%~3.9%之间， 回收率为75%~103% 。结论 本方法简单、安全，且快速易行，适用于水中多种卤乙酸的同时检测。 关键词：色谱法，离子交换；卤乙酸；饮用水 中图分类号：O657.7 文献标识码：A Determination of Six Kinds of Haloacetic Acids in Drinking Water by Ion Chromatography with Suppressed Conductivity Detection WANG Xin-yu ,WEI Jian-rong ,CHEN Bin-sheng, et al. Institute of Environmental Health, Beijing Center for Diseases Control and Prevention, Beijing 100013,China Abstract:Objective To established a method for the simultaneous determination of six haloacetic acids (HAAS) and other anions in drinking water by the ion chromatography. Methods The ion chromatography ，Dionex IonPac AS19-the anion exchange column were applied ，gradient eluent was performed by KOH solution. Six kinds of haloacetic acids (HAAS) including MCAA, DCAA, TCAA, MBAA, DBAA, TBAA were determined. Results The correlation coefficients were over 0.999 6 for the six HAAs in the range of 0.01 －0.1 mg/L. The minimal detection limits of DCAA and TCAA were 0.97 μg/L and 1.0 μg/L. The RSDs were 1.9% to 3.9%. The recovery rates of spiked standard were between 75% and 103%. Conclusion This method is simple, accurate,