饮用水源地水中典型消毒副产物的快速检测方法

Rapid Detection of Typical Disinfection By-Products in Drinking Water Source

摘要: 为快速检测饮用水源地水中典型消毒副产物的含量，建立GC法同时快速测定三氯甲烷、三溴甲烷、二氯乙腈的含量和HPLC法快速测定三氯乙酸的含量。结果表明，在11 min内三氯甲烷、三溴甲烷、二氯乙腈完全分离；三氯乙酸在5 min内出峰。当浓度在5~80 µg/mL时峰面积与浓度呈现良好的线性关系，R2为0.99932~0.99991；加标回收率为95.9%~102.65%，精密度RSD为0.53%~1.1%，检测限为34~75 µg/L。因此，饮用水中4种典型消毒副产物的测定方法，具有良好的重现性、回收率和精密度，为饮用水源地水中消毒副产物污染的研究提供技术支持。

Abstract: To rapidly detect the levels of typical disinfection by-products in drinking water sources, we de-veloped GC method to simultaneously and rapidly detect the concentrations of trichloromethane, tribromomethane, dichloroacetonitrile and HPLC method for trichloroacetic acid. Results showed that trichloromethane, tribromomethane and dichloroacetonitrile were completely separated within 11 minutes; When the concentration range was 5~80 µg/mL, the peak area showed a good linear relationship with the concentration, R2 was 0.99932~0.99991; The recovery rate was 95.9%~102.65%, the RSD was 0.53%~1.1%, and the detection limits were 34~75 µg/L. Therefore, the method for the determination of four typical disinfection by-products in drinking water has good reproducibility, recovery rate and precision, which provides technical support for the research of disinfection by-products pollution in drinking water sources.