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目的了解大连市饮用水中消毒剂副产物分布及含量,为饮水安全管理提供参考。方法采用离子色谱分析法,对大连市部分供水水源水、出厂水和末梢水中五种消毒副产物及其含量进行检测。结果大连市饮用水中检出消毒副产物主要有二氯乙酸和三氯乙酸,加权平均检出率为89.4%和85.9%,含量为0.044μg/ml和0.040μg/ml。未检出溴酸盐。结论该城市饮用水中检出的主要为含氯消毒剂副产物,其含量在规定的限值内,但仍应加强对饮水中消毒副产物的长期监测。
Objective To understand the distribution and content of disinfectant by-products in drinking water in Dalian, and provide references for drinking water safety management. Methods Ion chromatography was used to detect five kinds of disinfection by-products and their contents in some water sources, water samples and water samples in Dalian city. Results Dichloroacetic acid and trichloroacetic acid were the main disinfection byproducts detected in drinking water in Dalian. The weighted average detection rates were 89.4% and 85.9% respectively, and the contents were 0.044μg / ml and 0.040μg / ml. Bromate not detected. Conclusion The drinking water in the city is mainly detected as a by-product of the chlorine-containing disinfectant, its content is within the prescribed limits, but long-term monitoring of disinfection by-products in drinking water should be strengthened.