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目的掌握长江江苏段水VOCs、SVOCs含量,为制订饮水VOCs、SVOCs控制标准提供科学依据。方法于2006年4-5月调查检测长江江苏段8个主要市政自来水水源地、及镇江内江、高资镇通江河、市政自来水,采用吹扫捕集-气相色谱/质谱联用,固相微萃取-气相色谱/质谱联用检测,并对监测结果进行评价。结果本调查共检测水样品48份,检测VOCs 25项,检测出VOCs 14项;检测SVOCs 38项,检测出SVOCs计10项,其余指标低于检出限,所检测的VOCs、SVOCs指标均低于目前国家评价标准。最常被检出的VOCs为三氯甲烷、苯、甲苯、1,4-二氯苯和1,2-二氯苯5种物质,SVOCs为硝基苯、2,4-二氯苯酚、五氯酚、邻苯二甲酸二(2-乙基己基)酯和乐果5种物质。长江江苏段主要城市水源VOCs检测项目阳性率依次为南通>镇江、江阴两市>南京上元门>张家港>泰州>常州>南京夹江,阳性率分别为14.67%、14.00%、10.67%、8.67%、、6.00%、4.67%、3.33%。镇江段内江、高资通江河、市政自来水分别检测出VOCs 30项、18项、16项。结论长江江苏段主要市区饮用水源均有不同的VOCs、SVOCs污染物被检出,必须进一步加强对长江饮用水水源的保护。
Objective To grasp the contents of VOCs and SVOCs in the Jiangsu section of the Yangtze River and provide a scientific basis for formulating control standards of VOCs and SVOCs in drinking water. Methods From April to May in 2006, 8 main municipal tap water sources in Jiangsu section of Yangtze River and tap water in Zhenjiang Neijiang and Gaozi Town were investigated and tested. Purification and Trap - Gas Chromatography / Mass Spectrometry Extraction - GC / MS detection, and the monitoring results were evaluated. Results In this survey, 48 samples of water were tested, 25 VOCs were detected and 14 VOCs were detected. 38 SVOCs were detected, 10 SVOCs were detected, and the remaining indexes were below the detection limit. The detected VOCs and SVOCs were all low In the current national evaluation criteria. The most commonly detected VOCs are trichloromethane, benzene, toluene, 1,4-dichlorobenzene and 1,2-dichlorobenzene. SVOCs are nitrobenzene, 2,4-dichlorophenol, Chlorophenol, di (2-ethylhexyl) phthalate and dimethoate five substances. The positive rates of VOCs in major cities in the Yangtze River in Jiangsu Province were Nantong> Zhenjiang and Jiangyin> Nanjing Shangyuan> Zhangjiagang> Taizhou> Changzhou> Nanjing Jiajiang, the positive rates were 14.67%, 14.00%, 10.67% and 8.67 % ,, 6.00%, 4.67%, 3.33%. Zhenjiang section Neijiang, high-funded Tongjiang River, municipal tap water were detected VOCs, 18, 16. Conclusion There are different VOCs in drinking water sources in the main urban areas of the Yangtze River in Jiangsu Province. SVOCs pollutants are detected, and the protection of drinking water resources in the Yangtze River must be further strengthened.