丰台区农村自备井源水中污染物健康风险评价

目的探讨丰台区农村自备井源水中化学致癌物、非化学致癌物经饮水途径致人体健康风险水平,确定污染物的主次及治理的优先权。方法分析源水中NH3-N、NO3-、As、Hg、Cd、Cr6＋、Mn、Cu、Pb、Zn、挥发酚类、氟化物、氰化物的平均浓度,应用美国环保局（USEPA）推荐的健康风险评价模型进行健康风险评价。结果源水中化学致癌物所致健康风险度远高于非化学致癌物所致健康风险度,化学致癌物所致健康风险度大小顺序为Cr6＋〉As〉Cd,非化学致癌物所致健康风险度大小顺序为NO3-〉Cu〉氟化物〉Pb〉Hg〉Mn〉Zn〉氰化物〉NH3-N〉挥发酚类。总健康风险略超过或接近国际辐射防护委员会（ICRP）推荐的最大可接受水平。结论丰台区农村自备井源水化学致癌物Cr6＋、As和Cd对人体健康具有一定的风险度,应成为优先监测和治理对象。

Health Risk Assessment of Contaminates in Source Water of Rural Self-Sufficient Well in Fengtai District

Objective To explore the health risk of chemical carcinogens and non chemical carcinogens in source water of rural self-sufficient well in Fengtai district,determine the ranking of the pollutants and identify management priorities.Methods The average concentrations of NH3-N,NO3-,As,Hg,Cd,Cr6+,Mn,Cu,Pb,Zn,volatile phenols,F-and CN-in source water were analyzed and the health risk was assessed by using the health risk assessment models recommended by USEPA.Results The health risk values of chemical carcinogen...