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目的了解大连市饮用水中挥发性有机物(VOCs)的情况,监督大连市饮用水质量。方法对2013—2015年大连市生活饮用水水样96份,采用吹扫捕集-气相色谱-质谱联用法测定28种VOCs,并对结果进行分析统计。结果其中20份水源水共检出3种VOCs,浓度为0.02~1.46μg/L;76份出厂水共检出13种VOCs,浓度为0.07~27.47μg/L。结论居民饮用水中VOCs主要为消毒副产物以及痕量的苯系物,通过对相关水样的检测,探讨了水中VOCs的来源,为VOCs污染防治提供了依据。
Objective To understand the situation of volatile organic compounds (VOCs) in drinking water in Dalian and to monitor the quality of drinking water in Dalian. Methods A total of 96 water samples were collected from drinking water in Dalian City from 2013 to 2015, and 28 VOCs were determined by purge and trap - gas chromatography - mass spectrometry. The results were analyzed and statistically analyzed. Results Among the 20 water sources, three kinds of VOCs were detected at a concentration of 0.02-1.46 μg / L. Of the 76 samples, 13 VOCs were detected at a concentration of 0.07-27.47 μg / L. Conclusions Residents’ drinking water VOCs are mainly disinfection byproducts and trace amounts of benzene series. Through the detection of related water samples, the sources of VOCs in water are discussed, which provides a basis for the prevention and control of VOCs pollution.