摘要
长江三角洲地区是人口密度大和工农业生产发展很快的地区,为了保障人民生活用水安全,笔者在采样调查的基础上,采用美国环保局推荐的健康风险评价模型对该地区地下水的健康风险进行了评价。结果表明,非致癌物质由饮水途径所致健康危害的个人年风险以氟为最大,其次是铅、汞,其他污染物对人体健康危害的个人年风险均小于1.0×10^-9a^-1;而该地区地下水的化学致癌物引起的健康危害的风险度要比非致癌物所致的健康危害风险度高3~4个数量级。说明化学致癌物是地下水饮用水源需优先防治的污染物,必须在人们饮用之前将其去除,从而降低风险度。
Changjiang delta is an important area for agriculture and industry with large population in China. In order to protect people's safety of using water, health-based risk assessment is investigated by using the model of American Environmental Bureau. Results show that the largest risk is F among the non-cancer making elements, the second is Pb, and the third is Hg. And except F, all other risks are less than 1.0× 10^-9 a^-1 ,that is, one 10 millionth. But the risk caused by cancer-making elements are 3-4 times higher than the risk caused by non-cancer making elements. This implies that chemical cancer-making elements need to be disposed before the drinking water is used. It is very important to dispose Cr from groundwater.
出处
《安全与环境工程》
CAS
2008年第2期26-29,共4页
Safety and Environmental Engineering
基金
中国地质调查局项目(1212010634404)资助
关键词
地下水
健康风险
长江三角洲
groundwater
health-based risk assessment
Changjiang delta