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目的定量研究江苏部分地区13个水厂的水源水和出厂水中的49种半挥发性有机污染物。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-质谱联用进行定量分析。结果检出的多环芳烃类有萘、二氢苊、芴、菲和荧蒽;有机磷农药有敌敌畏和乐果,敌敌畏的检出率达到了100%,以长江和淮河为水源的饮用水检出浓度平均高于太湖水;有机氯农药检出率高的主要是β-六六六和林丹,β-六六六在3种水源水中的检出率都较高,而且枯水期的检出浓度高于平水期;多氯联苯类农药有检出七氯联苯,检出率较高的主要是以太湖为水源的水厂。结论根据GB 5749—2006《生活饮用水卫生标准》和《美国环保局2012年饮用水标准和健康指导》,检出的15种有机污染物中,除了杀虫畏、2,3,5,6-四氯硝基苯、菲和荧蒽没有限值,其他有机污染物浓度均在可以接受的健康风险水平之内。
Objective To quantitatively study the water sources of 13 water plants and the 49 kinds of semi-volatile organic compounds in factory water in some areas of Jiangsu Province. Methods The water sources and ex-factory water samples of 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 PAHs were naphthalene, dihydroanthracene, fluorene, phenanthrene and fluoranthene. Organophosphorus pesticides had dichlorvos and dimethoate, and the detection rate of dichlorvos reached 100%. Drinking water with the Yangtze River and Huaihe River as sources The detected concentrations were higher than that of Taihu Lake on average; the detection rate of organochlorine pesticides was mainly β-BHC and lindane, and the detection rate of β-BHC was higher in the three water sources, and the detection rate in dry season Concentration higher than the flat water; polychlorinated biphenyls pesticides have detected heptachlor biphenyl, the higher the detection rate is mainly Taihu Lake water for the water plant. Conclusion According to GB 5749-2006 “drinking water health standards” and “the United States Environmental Protection Agency 2012 drinking water standards and health guidance”, detected 15 kinds of organic pollutants, in addition to PCV, 2,3,5,6 - There is no limit to TCN, phenanthrene and fluoranthene, and other organic pollutant concentrations are within acceptable health risk levels.