Contamination of groundwater and risk assessment for arsenic exposure in Ha Nam province, Vietnam
Contamination of groundwater and risk assessment for arsenic exposure in Ha Nam province, Vietnam
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DOI：
10.1016/j.envint.2008.07.014
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发表时间：
2009-04-01
影响因子：
11.8
通讯作者：
Kim, Kyoung-Woong
中科院分区：
文献类型：
--
作者：
Nguyen, Van Anh;Bang, Sunbaek;Kim, Kyoung-Woong
调查了受砷污染的地下水的特征及其潜在的风险。在越南北部河南省的四个村庄(Vinh Tru，Bo de，Hoa Hau，Nhan Dao)的地下水中发现了砷污染。由于地下水一直被用作这些地区的主要饮用水水源之一，因此在这些村庄采集了地下水和头发样本。三个村庄(Vinh Tru，Bo de.)的砷浓度。河口)明显超过越南饮用水砷标准(10微克/L)，平均浓度分别为348、211和325微克/L。根据砷的形态测试结果，地下水中的主要形态砷以亚砷酸盐[As(III)]的形式存在。铁的浓度升高。地下水中还发现了锰和铵。虽然该地区使用的砂滤系统去除了90%以上的砷，但大多数处理后的地下水中砷浓度仍高于饮用水标准。经处理的地下水和女性头发中的砷浓度之间存在显著的正相关。通过饮用水途径对砷的风险评估表明，对当地社区既有潜在的慢性风险，也有致癌风险。超过40%的饮用经过处理的地下水的人长期面临砷暴露的风险。(C)2008爱思唯尔有限公司。保留所有权利。
The characteristics of arsenic-contaminated groundwater and the potential risks from the groundwater were investigated. Arsenic contamination in groundwater was found in four villages (Vinh Tru, Bo De, Hoa Hau, Nhan Dao) in Ha Nam province in northern Vietnam. Since the groundwater had been used as one of the main drinking water sources in these regions, groundwater and hair samples were collected in the villages. The concentrations of arsenic in the three villages (Vinh Tru, Bo De. Hoa Hau) significantly exceeded the Vietnamese drinking water standard for arsenic (10 mu g/L) with average concentrations of 348, 211, and 325 mu g/L, respectively. According to the results of the arsenic speciation testing, the predominant arsenic species in the groundwater existed as arsenite [As(III)]. Elevated concentrations of iron. manganese, and ammonium were also found in the groundwater. Although more than 90% of the arsenic was removed by sand filtration systems used in this region, arsenic concentrations of most treated groundwater were still higher than the drinking water standard. A significant positive correlation was found between the arsenic concentrations in the treated groundwater and in female human hair. The risk assessment for arsenic through drinking water pathways shows both potential chronic and carcinogenic risks to the local community. More than 40% of the people consuming treated groundwater are at chronic risk for arsenic exposure. (C) 2008 Elsevier Ltd. All rights reserved.