温州横阳支江地表水健康风险评价

Health Risk Assessment for Surface Water of Hengyang River in Wenzhou

对温州市横阳支江水的监测数据，利用风险评价模型进行了风险评价。结果表明，由非致癌物饮水途径健康危害的总风险值处在10^-8～10^-9水平，风险水平均远低于国际辐射防护委员会（ICRP）推荐的通过饮水途径最大可接受风险水平（5×10^-5a^-1），因此通过饮水途径所引起的慢性非致癌物暴露不会对暴露人群引起健康危害。砷对暴露人群所导致的致癌风险在10^-5a^-1水平，风险水平均接近于国际辐射防护委员会（ICRP）推荐的通过饮水途径最大可接受风险水平，因此，应优先对砷进行管理。最后探讨了生态风险评价中存在的问题和尚需进一步研究的工作。

Hengyang river of Wenzhou was studied on the risk assessment. The results showed that the non - carcinogenic risks levels ranged recommended by ICRP （5 × 10^-5 a from 10^-8 to 10^-9, much lower than the maximum allowance levels ） . But the As risk level in drinking water in Hengyang river of Wenzhou is 10^-5 a^-1, near to the maximum allowance levels recommended by ICRP （5 × 10^-5 a^-1） This meant that As was the main risk pollutant. Therefore, As should be first controlled. At last, the problems about ERA and the work needed to further research were discussed.