Centre for Environmental Risk Assessment and Remediation (CERAR), University of South Australia, Mawson Lakes Campus, SA 5095, Australia; Cooperative Research Centre for Contamination Assessment and Remediation of the Environment (CRC-CARE), PO Box 486, Salisbury South, SA 5106, Australia.
Centre for Environmental Risk Assessment and Remediation (CERAR), University of South Australia, Mawson Lakes Campus, SA 5095, Australia; Cooperative Research Centre for Contamination Assessment and Remediation of the Environment (CRC-CARE), PO Box 486, Salisbury South, SA 5106, Australia.
Chemosphere. 2015 Nov;139:54-64. doi: 10.1016/j.chemosphere.2015.05.051. Epub 2015 Jun 3.
We investigated the concentrations of 23 elements in groundwater from arsenic (As) contaminated areas of Bangladesh and West Bengal, India to determine the potential human exposure to metals and metalloids. Elevated concentrations of As was found in all five study areas that exceeded the World Health Organization (WHO) guideline value of 10μg/L. The mean As concentrations in groundwater of Noakhali, Jalangi and Domkal, Dasdia Nonaghata, Deganga and Baruipur were 297μg/L, 262μg/L, 115μg/L, 161μg/L and 349μg/L, respectively. Elevated concentrations of Mn were also detected in all areas with mean concentrations were 139μg/L, 807μg/L, 341μg/L, 579μg/L and 584μg/L for Noakhali, Jalangi and Domkal, Dasdia Nonaghata, Deganga and Baruipur, respectively. Daily As intakes from drinking water for adults and the potential cancer risk for all areas was also estimated. Results suggest that mitigation activities such as water treatment should not only be focused on As but must also consider other elements including Mn, B and Ba. The groundwater used for public drinking purposes needs to be tested periodically for As and other elements to ensure the quality of drinking water is within the prescribed national guidelines.
我们调查了孟加拉国和印度西孟加拉邦砷污染地区地下水的 23 种元素浓度，以确定人类接触金属和类金属的潜在风险。在所有五个研究地区都发现了砷浓度升高，超过了世界卫生组织（WHO）规定的 10μg/L 指导值。在诺阿卡利、贾兰吉、多姆卡尔、达迪亚诺纳加塔、德甘加和巴鲁里普尔，地下水的砷浓度均值分别为 297μg/L、262μg/L、115μg/L、161μg/L 和 349μg/L。所有地区的锰浓度也都升高，其浓度均值分别为 139μg/L、807μg/L、341μg/L、579μg/L 和 584μg/L。我们还估算了成人从饮用水中摄入砷的情况以及所有地区的潜在癌症风险。结果表明，缓解措施（如水处理）不仅应专注于砷，还必须考虑包括锰、硼和钡在内的其他元素。用于公共饮用水的地下水需要定期进行砷和其他元素测试，以确保饮用水质量符合国家规定的标准。
