摘要
为研究皖北某矿区松散层中部地下水中微量元素含量特征及其对人体产生的潜在健康危害风险,对该矿区的水质进行了监测分析,并采用中国环保部《污染场地健康风险评价导则》(HJ25.3-2014)推荐的健康风险评价模型分析了该矿区中层地下水中微量元素经饮水途径所引起的健康风险。结果表明:所监测的微量元素浓度为Zn>Ni>Cu>Cd>Cr,其中,Cd、Cr、Cu和Zn浓度都在《地下水质量标准》(GB/T 14848-93)中Ⅲ类水质标准的规定范围内,仅Ni有一个水样超过相应的标准限值,对该矿区的中层地下水水质无明显的影响;5种微量元素中仅Cr存在潜在致癌风险,风险均值为1.55×10-6,超过了该模型推荐的评价标准(10-6),但是与国内已报道的其他地区的致癌风险度无明显差异;5种微量元素虽有非致癌风险,但危害商远小于1,不会对人体产生明显的非致癌健康危害。
In order to investigate the content of trace elements and its potential health risk to human beings in the middle groundwater of the loose layer from a coal mining area,a series of trace elements were analyzed. Healthbased risk assessment was also performed using the model of the technical guidelines for risk assessment of contaminated sites(HJ25.3-2014). The results showed that the content order of trace elements was Zn>Ni>Cu>Cd>Cr. The concentrations of Cd,Cr,Cu and Zn met the National Quality Standard for Groundwater(GB/T 14848-93Ⅲ),only Ni has a water sample exceed the standard values. So the trace elements had no significant effect on the quality of groundwater in the region. In the five trace elements,only Cr had potential carcinogenic risk,the average risk vale was 1.55× 10-6. Although the risk was higher than the assessment standard recommended by the technical guidelines for risk assessment of contaminated sites(10-6). It had no significant difference from the results for other regions of China. The five trace elements had non-carcinogenic risk,but their hazard quotient far below one. So the traces elements didn't cause significant non-carcinogenic health hazard.
出处
《地下空间与工程学报》
CSCD
北大核心
2017年第4期1137-1144,共8页
Chinese Journal of Underground Space and Engineering
基金
国家自然科学基金(41773100,41373095)
皖北煤电集团公司科研项目(2017)
宿州学院智能信息处理实验室开放课题资助(2016ykf13)
关键词
矿区
中层地下水
微量元素
健康风险评价
mining district
mid-layer groundwater
trace elements
health risk assessment
