Well water contaminated by acidic mine water from the Dabaoshan Mine, South China: Chemistry and toxicity
Well water contaminated by acidic mine water from the Dabaoshan Mine, South China: Chemistry and toxicity
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DOI：
10.1016/j.chemosphere.2007.06.041
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发表时间：
2007-12-01
期刊：
影响因子：
8.8
通讯作者：
Zhu, L.
中科院分区：
文献类型：
--
作者：
Chen, A.;Lin, C.;Zhu, L.
对广东大宝山酸性矿井水灌溉的农村井水水质进行了调查。对112口威尔斯井水在两个不同季节的pH值测定结果表明，上坝洪泛区（广东大宝山矿区以南约11 km）井水已受到不同程度的污染。井水pH值有向南升高的趋势，说明酸性灌溉水对地下水的影响随着距离酸性灌溉水进入点的增加而减小。对所选威尔斯井的水质监测结果表明，水中的Cu和Cd超过了《生活饮用水国家标准》（GB 574985）对灌溉水源附近威尔斯井的限量。如果世界卫生组织（WHO）的标准被认为是，镉在一些威尔斯几乎是10倍，世界卫生组织的指导值（0.003毫克升（-1））。从最接近酸性灌溉水源的位置收集的水即使在51倍稀释后对测试生物（隆线蚤）也具有急性毒性。这是可能的，极高的死亡率的当地人口报告的研究领域是至少部分与高水平的重金属，特别是镉在饮用井水。(C)2007年由Elsevier Ltd.出版
An investigation into well water quality was carried out in a rural area subject to irrigation with acidic mine water from the Guangdong Dabaoshan Mine, southern China. The results of water pH measurements from 112 wells in two different seasons suggest that the well water has been contaminated to varying degrees in the investigated Shangba floodplain (approximately 11 km south of the Guangdong Dabaoshan Mine). There is a trend that well water pH increased southwards, suggesting that the impacts of acidic irrigation water on groundwater decreased with increasing distance to the entry point of acidic irrigation water. Water quality monitoring results of the selected wells show that Cu and Cd in the water exceeded the limits set in the Chinese National Standards for Drinking Water (GB 574985) for the wells close to the irrigation water source. If the World Health Organization (WHO) standard was considered, Cd in some wells was almost 10 times as high as the WHO guideline value (0.003 mg l(-1)). Water collected from the location closest to the acidic irrigation water source was acutely toxic to the test organism (Daphnia carinata) even after 51 time dilution. It is likely that the extremely high mortality rate of the local population reported for the study area is at least partly related to the high levels of heavy metals, particularly Cd in the drinking well water. (C) 2007 Published by Elsevier Ltd.