黄河濮阳段水体中多环芳烃的健康风险评价

Health Risk Assessment of Polycyclic Aromatic Hydrocarbons in the Puyang Section of Yellow River

根据黄河濮阳段多环芳烃的监测数据,应用美国环保局(USEPA)的健康风险评价方法对多环芳烃通过饮水、皮肤接触和食用水产品3种途径进入人体的健康风险进行了初步评价.结果表明,黄河濮阳段人群由于多环芳烃暴露引起的致癌风险为1.85×10-6～5.51×10-6a-1,苯并(a)芘的致癌风险指数最高.多环芳烃暴露引起的非致癌风险为2.14×10-8～2.10×10-9a-1,平均为1.17×10-8a-1,远低于国际辐射防护委员会推荐水平.不同暴露途径导致的健康风险的对比表明,食用水产品是水体中多环芳烃危害人体健康的最主要途径,其对人体健康总风险的贡献远大于饮水和皮肤接触.

The health risk assessment method was applied to assess the health risk caused by the polycyclie aromatic hydrocarbons in water from Puyang section of Yellow river based on the monitored data. They may enter the human body through drinking water, dermal contact and fish consumption. The results show that the carcinogenic risk indexes vary from 1.85×10^-6 --5.51×10^-6 a^-1, with the greatest health risk being caused by benzo（a）pyrene. At the meantime, the average non-carci- nogenic risk index is 1.17×10^-8 a^-1, much lower than the maximum tolerable value recommended by ICRP. The comparison of health risks of different routes of exposure shows that the fish consumption is the main route of organic pollution endangering the human health, its contribution to the total risk is much higher than that of drinking water and dermal contact.