石油污染场地地下水污染健康风险评估

阐述了对地下水进行健康风险评估的基本思路,并以东北某石油污染场地为例,基于场地水文地质调查、水化学分析,掌握了场地地下水的污染特征,根据地下水健康风险评估理论,对地下水中目标污染物给当地居民造成的人体健康风险进行评估,得到场地地下水污染物优先修复顺序及修复限值。结果表明,场地地下水致癌污染物优先修复顺序为铬、萘、苯、砷、镉;非致癌污染物优先修复顺序为砷、苯、铬。场地地下水修复限值,铬为0.76μg/L,萘为26.70μg/L,苯为13.00μg/L,砷为2.13μg/L,镉为0.10μg/L。

Health Risk Assessment of Groundwater Pollution in the Petroleum Contaminated Sites

The basic concept to conduct a health risk assessment of groundwater was expounded,and with a petroleum contaminated site in Northeast China as an example,its groundwater pollution features were summarized based on a hydro-geological investigation and hydro-chemical analysis,and then according to the theory of groundwater health risk assessment,the heath risks brought by certain groundwater pollutants to local residents were assessed,from which the remedial priority order of contaminants in groundwater and responding remedial thresholds were calculated.The results supposed that the priority order of carcinogenic pollutants in groundwater were Cr,naphthalene,benzene,As and Cd;the priority order of non-carcinogenic pollutants was As,benzene and Cr.The repair thresholds were 0.76 μg of Cr,26.70 μg mg/L of naphthalene,13.00 μg of benzene,2.13 μg of As and 0.10 μg of Cd.