镇江市地下水水质评价研究

Research on evaluation of the groundwater quality in Zhenjiang

采用内梅罗指数法对镇江市地下水水质进行综合评价:综合污染指数PI为7.02,地下水水质为较差。健康风险评价模型计算结果表明,化学致癌物质是造成健康风险的主要因素,其造成的个人年风险R^C按从小到大排列为砷<镉<六价铬,其风险度分别为2.45×10^(-5)ɑ^(-1),1.53×10^(-7)ɑ^(-1),3.68×10^(-5)ɑ^(-1),R总为6.14×10^(-5)ɑ^(-1),超过国际辐射防护委员会(ICRP)推荐的最大可接受风险度(5×10^(-5)a^(-1))。

Nemero index method was used to evaluate the groundwater in Zhenjiang City,the comprehensive pollution index PI was 7. 02,and the groundwater quality was poor. The results of health risk assessment model show that chemical carcinogens are the main factors that cause health risks. The personal annual risk caused by small to large arrangement： Arsenic〈 cadmium 〈six chromium,the value of the risk were 2. 45 × 10^-5,1. 53 ×10^-7,3. 68 × 10^-5,respectively. Total risk value（ 6. 14 × 10^-5） was higher than the maximum allowance levels recommended by ICRP（ 5 × 10^-5 a^-1）.