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长江口南通地区饮用水源地健康风险评价
引用本文:徐爱兰,陈敏,孙克遥.长江口南通地区饮用水源地健康风险评价[J].中国环境监测,2012,28(6):9-14.
作者姓名:徐爱兰  陈敏  孙克遥
作者单位:南通市环境监测中心站, 江苏 南通 226006;南通市环境监测中心站, 江苏 南通 226006;华侨大学环境科学与工程系, 福建 厦门 361021
基金项目:南通市社会科技发展项目(S2009020)
摘    要:对长江口南通地区饮用水源地中镉、砷、六价铬等有毒有害物质的浓度进行了调查,并应用目前美国环保局推荐的健康风险评价模型对各饮用水源地有毒有害物质所引起的健康风险做了初步评价。结果表明,长江口南通地区饮用水源地通过饮水途径基因毒物质中化学致癌物所产生的健康风险的数量级为10-8~10-5,其中As 在如海河和新通扬运河所引起的致癌风险最大,高于国际辐射防护委员会(ICRP) 推荐的通过饮水途径最大可接受风险水平;通过饮水途径引起的非致癌健康风险远低于ICRP 推荐的最大可接受风险水平。基因毒物质中砷和六价铬这2种毒物应被列为该地区饮用水源地水和水厂制水过程中优先检测和控制的致癌污染物,应重点关注基因毒物质六价铬和砷对人体所产生的健康风险。

关 键 词:长江口  饮用水源水  水文期  健康风险评价
收稿时间:2011/4/29 0:00:00
修稿时间:2011/6/10 0:00:00

Health Risk Assessment of Water Supply Sources in Yangtze Estuary Area
XU Ai-lan,CHEN Min and SUN Ke-yao.Health Risk Assessment of Water Supply Sources in Yangtze Estuary Area[J].Environmental Monitoring in China,2012,28(6):9-14.
Authors:XU Ai-lan  CHEN Min and SUN Ke-yao
Institution:Nantong Environmental Monitoring Center, Nantong 226006, China;Nantong Environmental Monitoring Center, Nantong 226006, China;Depantment of Environmental Science and Engineering, Huaqiao University, Xiamen 361021, China
Abstract:Concentrations distribution of the Cr, As, Cd and so on, in drinking water in source and drinking Water of Yangtze Estuary Area was studied. Health risks associated with 16 pollutants in drinking water were assessed using USEPA health risk assessment model. The results showed that: among the risks caused by the carcinogens in drinking water,the largest risk associated with As should be in RuHai River and that in new TongYang River, while both were significantly higher than the maximum allowance levels recommended by ICRP.The non-carcinogenic risks levels ranged from 10-12 to 10-9, much lower than the maximum allowance levels recommended by ICRP. The risks caused by the carcinogens in drinking water is about 99% of total risks. Great attention should be take to these pollutants while monitoring and producing.
Keywords:yangtze estuary area  source and drinking water  hydrographic period  health risk assesment
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