深圳市饮用水中农药残留健康风险评价
发布时间：2019-05-24 15:03
【摘要】：目的对深圳市饮用水中农药残留进行非致癌健康风险评价及年度趋势分析。方法收集、分析全市2011—2013年出厂水、末梢水和二次供水水质监测数据,借鉴美国国家环境保护局(USEPA)推荐的风险评价模型,对七氯、五氯酚、六六六、六氯苯、滴滴涕、马拉硫磷、草甘膦、乐果、灭草松、莠去津、百菌清和呋喃丹12种农药残留进行成人和儿童的健康风险评价。结果 12011—2013年共有84份出厂水、11份末梢水和1份二次供水样品检测了七氯等12个农药指标,所测样品指标最大值均未超过GB 5749—2006《生活饮用水卫生标准》规定的限值。22011—2013年出厂水中七氯等12种农药残留对成人和儿童的非致癌健康风险HIT均大于1(2.323~6.312),其中最主要的风险来自乐果残留,其非致癌健康风险HIi均大于1(1.995~5.094);而且有逐年上升趋势:成人HIT2011年(2323.18×10-3)2012年(2340.18×10-3)2013年(2431.97×10-3);儿童HIT2011年(2965.07×10-3)2012年(2986.77×10-3)2013年(3103.93×10-3)。儿童的健康风险高于成人。3末梢水的均值风险HIT末(2619.64×10-3)大于出厂水的HIT出(2366.92×10-3)。不论出厂水还是末梢水,乐果均是最主要的风险来源(HIi为2.003~3.991),其次是六氯苯和七氯。结论深圳市饮用水中农药残留健康风险已超过警戒值,最主要的风险来源是乐果,而且有逐年上升趋势,儿童的健康风险高于成人。
[Abstract]:Objective to evaluate the non-carcinogenic health risk and annual trend of pesticide residues in drinking water in Shenzhen. Methods the monitoring data of factory water, terminal water and secondary water supply in the city from 2011 to 2013 were collected and analyzed, and the risk assessment model recommended by (USEPA) of the National Environmental Protection Agency of the United States was used for reference to seven chloro, pentachlorophenol, hexachlorobenzene and DDT. 12 pesticide residues of malathion, glyphosate, dimethoate, pine, atrazin, chlorothalonil and furan were evaluated for health risk in adults and children. Results from 2011 to 2013, a total of 84 samples of factory water, 11 samples of terminal water and 1 sample of secondary water supply were tested for 12 pesticide indexes such as seven chlorine. The maximum value of the measured sample index did not exceed the limit value specified in GB 5749 2006 drinking Water Sanitary Standard. 2the non-carcinogenic health risk of 12 pesticide residues, such as seven chlorine, in factory water from 2011 to 2013 for adults and children was greater than 1 (2.323 鈮，
本文编号：2484962
[Abstract]:Objective to evaluate the non-carcinogenic health risk and annual trend of pesticide residues in drinking water in Shenzhen. Methods the monitoring data of factory water, terminal water and secondary water supply in the city from 2011 to 2013 were collected and analyzed, and the risk assessment model recommended by (USEPA) of the National Environmental Protection Agency of the United States was used for reference to seven chloro, pentachlorophenol, hexachlorobenzene and DDT. 12 pesticide residues of malathion, glyphosate, dimethoate, pine, atrazin, chlorothalonil and furan were evaluated for health risk in adults and children. Results from 2011 to 2013, a total of 84 samples of factory water, 11 samples of terminal water and 1 sample of secondary water supply were tested for 12 pesticide indexes such as seven chlorine. The maximum value of the measured sample index did not exceed the limit value specified in GB 5749 2006 drinking Water Sanitary Standard. 2the non-carcinogenic health risk of 12 pesticide residues, such as seven chlorine, in factory water from 2011 to 2013 for adults and children was greater than 1 (2.323 鈮，
本文编号：2484962
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