重庆典型岩溶地区地下水多环芳烃污染水平及健康风险  

Contamination Level and Health Risk of Polycyclic Aromatic Hydrocarbons in Groundwater in Typical Karst Areas of Chongqing

作　　者：蓝家程 孙玉川[3,4] 王尊波 胡宁[5] LAN Jia-cheng;SUN Yu-chuan;WANG Zun-bo;HU Ning(School of Karst Science,Guizhou Normal University,Guiyang,Guizhou 550001,China;State Engineering Technology for Karst Desertification Control,Guizhou Normal University,Guiyang,Guizhou 550001,China;Chongqing Key Laboratory of Karst Environment,Southwest University,Chongqing 400715,China;School of Geographical Sciences,Southwest University,Chongqing 400715,China;Seismological Bureau of Xinxiang,Xinxiang,Henan 453000,China)

机构地区：[1]贵州师范大学喀斯特研究院,贵州贵阳550001 [2]贵州师范大学国家喀斯特石漠化防治工程技术研究中心,贵州贵阳550001 [3]岩溶环境重庆市重点实验室,重庆400715 [4]西南大学地理科学学院,重庆400715 [5]新乡市地震局,河南新乡453000

出　　处：《环境监测管理与技术》2020年第4期29-33,共5页The Administration and Technique of Environmental Monitoring

基　　金：国家自然科学基金资助项目(41761091);贵州省科学技术基金资助项目(黔科合J字[2015]2111号,黔科合基础[2017]1417);贵州师范大学2014年博士科研启动基金资助项目(600204)。

摘　　要：采集重庆3个典型岩溶地区113个地下水样品,利用人体暴露风险系数法对16种优先控制多环芳烃(PAHs)饮水途径健康风险进行评价。结果表明:地下水中PAHs、致癌PAH和BaP的质量浓度分别为200 ng/L^2638 ng/L、未检出~362 ng/L和未检出~62.7 ng/L,其中南川区地下水中BaP质量浓度为45.1 ng/L,已超过《生活饮用水卫生标准》(GB 5749—2006)的水质要求。PAHs污染水平为南川区>老龙洞流域>青木关流域,与国内其他岩溶地区地下水相比,处于较高污染水平。人群的致癌风险(ILCR)为5×10-10~2.80×10-5,其中南川区ILCR>10-6,具有潜在致癌风险;非致癌类PAHs饮水途径健康风险处于10-11~10-9水平,远低于USEPA规定的阈值1。The health risks of 16 kinds of polycyclic aromatic hydrocarbons which were priority control pollutants listed in USEPA in 113 groundwater samples collected in three typical karst area of Chongqing were assessed by human exposure risk assessment method. The results showed that the mass concentration of PAHs, carcinogenic PAHs and BaP ranged from 200 ng/L^2 638 ng/L, not detecfed^362 ng/L, not detected^62.7 ng/L, respectively. The mass concentration of BaP was 45.1 ng/L in Nanchuan district, which exceeded the national standard for drinking water quality(GB 5749—2006). PAHs pollution level ranked in the following order Nanchuan>Laolongdong>Qingmuguan. These levels of PAHs were relatively higher compared to other karst areas. ILCR ranged from 5×10-10 to 2.80×10-5. In Nanchuan, ILCR was over 10-6, indicating potential cancer risk. The health risks of non-carcinogenic PAHs ranged from 10-11 to 10-9 through drinking water, which were far below the threshold value 1 prescribed by USEPA.

关 键 词：地下水 多环芳烃 污染水平 健康风险 岩溶地区 重庆 

分 类 号：X523[环境科学与工程—环境工程] X820.4