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《Chinese Journal of Ecology》 2018-02
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Chemical characteristics and health risk assessment of groundwater from large coalmining area in Shaanxi and Inner Mongolia of China

CAI Yue;LI Xiao-ping;ZHAO Ya-nan;SUN Xue-meng;LIU Dong-ying;WU Ting;AI Yu-wei;YANG Tao;School of Geography and Tourism, Shaanxi Normal University, National Demonstration Center for Experimental Geography Education (Shaanxi Normal University) , SNNU-JSU Joint Research Center for Nano-environment Science and Health;  
Twenty-two water parameters of groundwater collected from six large coal-mining areas in Shaanxi and Inner Mongolia of China,including physical and chemical properties,major ions and potential toxic elements( PTE)( As,Hg,Cr,Cu,Cd,Pb,Zn and Ni),were investigated with automatic water analyzer,ion chromatography( IC),atomic fluorescence analyzer( AFS),and inductively coupled plasma mass spectrometry( ICP-MS). The pollution status and health risk were evaluated by fuzzy comprehensive method and USEPA chemical carcinogens model,respectively. Results showed that the ground water( below 300 m) ranked the first grade in water quality according to the standard of GB/T 14848-93. The contents of main cations and anions decreased as Mg2+Na+Ca2+K+and SO42-Cl-NO3-F-. SO4·Cl-Na and bicarbonate were the main water types. Although the cancer and non-cancer risk of most PTEs exposure to adults and children were within acceptable limits,the PTEs Cr and As were more likely to cause health risks to children and adults than other elements. Moreover,Cr had a greater cancer risk for children compared to As for adults. It is important to note that the health risk from PTEs to children was greater than that to adults. The total health risks of PTEs in groundwater from Halagou,Wangqugou and Guadiwan coal mine areas exceeded the critical load of 5.0 × 10-5 a-1 recommended by International Commission on Radiological Protection( ICRP). Our results highlight that more attention should be paid on the health risk of PTEs in groundwater from those areas.
【Fund】: 国家自然科学基金项目(41471420 41571512);; 国家科技基础性工作专项重点项目(2014FY210100)子课题能源开发区生态系统与环境变化调查专题;; 陕西省自然科学基础研究计划(2015JM4124);; 中央高校基本科研业务费专项基金(GK201701010 GK201402032 GK200902024)资助
【CateGory Index】: X523;X824
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