2009年深圳市水质网络监测中氯乙酸结果分析

目的分析深圳市出厂水和末梢水中氯乙酸的含量水平。方法采用气相色谱法对水样中的氯乙酸进行分析检测,按照《生活饮用水卫生标准》的规定进行评价。结果二氯乙酸（DCAA）限值为0.05mg/L,三氯乙酸（TCAA）限值为0.1mg/L,全部结果均不超标。结论不同的消毒方式产生的氯乙酸含量有差异,但影响饮用水中氯化消毒副产物产生的因素较多,其中源水中有机物前体的种类和浓度是其生成的决定性因素。

Analysis on Monitoring Result of Chloroacetate in Water Quality Network of Shenzhen City in 2009

Objective]To analyze the content of chloroacetate in finished water and tap water of Shenzhen city.Methods]The content of chloroacetate in water samples was analyzed and detected by gas chromatography,and the Standard for Drinking Water Quality was applied to evaluate.Results]The limit of dichloroacetic acid （DCAA） and trichloroacetic acid （TCAA） was 0.05 mg/L and 0.1 mg/L respectively,and there was no result over the standards.Conclusion]The contents of chloroacetate produced by different disinfection methods are different.There are many factors which can influence the production of by-products in chlorination disinfection of drinking water,and the types and concentrations of organic precursors in the source water is the decisive factors.