环境健康风险评估在某市居民生活饮用水中的应用

Application of Environmental Health Risk Assessment on the Safety of Drinking Water in a City

摘要:
目的利用某市居民生活饮用水健康风险评估实例，阐述定量风险评估在生活饮用水评价中的应用。
方法基于经典"四步法"对某市居民生活饮用水中各种化合物开展风险评估，用中位数描述健康风险。
结果某市自来水中非癌症总风险为7.32×10^-2，处于可接受范围内。自来水中癌症风险为3.75×10^-6，其中砷为3.44×10^-6。
结论某市自来水中砷的健康风险较高。

Abstract:
Objectives Taking the health risk assessment on drinking water in a city as an example to illustrate the application of quantitative risk assessment method in drinking water evaluation.
Methods The health risk of various compounds in drinking water was based on a classical "four-step" methods and the health risk was described with the median value.
Results The total HQ of tap water was 7.32×10^-2 in the city, which was lower than the acceptable limits. The total risk of tap water was 3.75×10^-6, in which arsenic was 3.44×10^-6.
Conclusions The health risk of arsenic in the tap water of the city was higher.