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目的研究江苏部分地区饮用水中有机物污染状况。方法于2012年10月和2013年2月采集江苏部分地区13个水厂的水源水和出厂水,经固相萃取小柱富集后采用气相色谱-质谱联用进行定性分析。结果检测出的有机污染物主要包括烷烃、单环及多环芳烃、杂环、醇酸酯类和农药类,平水期检出的有机污染物总数略多于枯水期;以太湖为水源的部分水厂的出厂水检测出了三溴甲烷、二溴乙腈等消毒副产物;枯水期农药的检出数比平水期少一些,水源水中检出的大多数农药(丁噻隆、粉唑醇、毒死蜱、特丁津、稻瘟灵、莠灭净、扑草净、抗蚜威和戊唑醇)在出厂水并未检出,而莠去津和嗪草酮在部分水源水和出厂水中都有检出。结论江苏部分地区饮用水已受到一定的有机物污染,自来水厂消毒处理可能会产生一定的消毒副产物,而且也难以消除农药残留。
Objective To study the status of organic pollution in drinking water in some areas of Jiangsu Province. Methods Water sources and ex-factory water samples from 13 water plants in parts of Jiangsu Province were collected in October 2012 and February 2013, and were analyzed by gas chromatography-mass spectrometry after enrichment by solid-phase extraction cartridges. Results The detected organic pollutants mainly included alkanes, monocyclic and polycyclic aromatic hydrocarbons, heterocyclics, alkyd esters and pesticides. The total number of organic pollutants detected in the flat water period was slightly more than that in the dry season. Some water Disinfection by-products such as tribromomethane and dibromoacetonitrile were detected in the ex-factory water of the factory. The number of pesticides detected in the dry season was less than that of the flat water. Most of the pesticides detected in the source water (butylthiazide, flutriafol, chlorpyrifos, , Rice blast, ametryn, prometryne, pirimicarb and tebuconazole) were not detected in the factory water, while atrazine and metribuzin were detected in some of the water source and ex-factory water. Conclusion Drinking water in some areas of Jiangsu Province has been contaminated by some organic substances. Disinfection treatment in waterworks may produce some disinfection byproducts, and it is also difficult to eliminate pesticide residues.