苏州太湖饮用水源地健康风险评价研究

Health Risk Assessment of TaihuWater Source in Suzhou

文章对苏州太湖渔洋山和金墅港两个水源地中六价铬、砷、镉等有毒有害物质采用健康风险评价模型进行评价。评价结果表明,两个水源地总的风险值均未超过国际辐射防护委员会(ICRP)推荐的有毒有害物质健康危害风险最大可接受水平为5.0×10-5a-1,属于安全级别。评价因子中的化学致癌物对人体健康危害的年风险值远大于非致癌物的风险值。砷和六价铬的健康风险已超过USEPA建议值1.00×10-6a-1,所以这两种毒物应被列为饮用水源地水厂制水过程中优先检测和控制的致癌污染物。

The article useshealth risk evaluation model to assess the environmental conditions of Yuyangshan and Jinshugangwater source in Suzhou Taihu Lake. The evaluation results show that thetotal risk values of both water sources are complied with the standard prescribed by the International Commission on Radiological Protection（ICRP） which recommended that the maximum acceptable level for toxic and harmful substances is 5.0 × 10^-5 a-1. The Yuyangshan water source and Jinshugangwater sourceare secure. The risk of chemical carcinogen to human health is much greater than the non - carcinogens. The health risk of As and Cr6＋ exceed USEPA value, which is 1.00 × 10^-6a-1. So these poisons should be classified as carcinogenic pollutants priority detection and control of the two source of drinking water in the waterworks.