西南地区铅锌矿区地表水重金属健康风险评价

Health Risk Assessment of Heavy Metal in Surface Water of Lead Zinc Mining Area in Southwest China

通过改进的美国EPA人体暴露风险方法,评价我国西南地区某铅锌矿区地表水重金属健康风险,为矿区水资源保护及矿山环境综合整治提供科学依据,其风险评估的结果具有指导意义。研究结果表明,该铅锌矿区地表水As、Cr6+、Cd、Pb、Hg、Zn、Cu监测值满足水功能区划要求;重金属总健康风险指数大于WHO、ICRP推荐的公众健康可接受水平,需警惕,并采取重金属污染预防措施防止矿区周边地表水体中重金属含量继续升高,Zn、Pb为主要的健康风险因素。

Health risk of heavy metal in surface water of a lead zinc mining area in southwest China was researched by improved EPA method, which could provide scientific basis for lead-zinc mining water resources protection and environmental comprehensive renovation, the risk assessment results had guiding significance. The results showed that the concentration of As, Cr^6＋, Cd, Pb, Hg, Zn and Cu in surface water met the water function zoning requirements, total health risk index of heavy metal in surface water were more than WHO and ICRP recommended public health acceptable level, preventive measures should be taken to prevent the pollution of heavy metals in surface water heavy metals mining area continues to rise, and Zn and Pb were the main risk factors of health.