Evaluation of Shallow Groundwater Contamination and Associated Human Health Risk in an Alluvial Plain Impacted by Agricultural and Industrial Activities, Mid-west China
Evaluation of Shallow Groundwater Contamination and Associated Human Health Risk in an Alluvial Plain Impacted by Agricultural and Industrial Activities, Mid-west China
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DOI：
10.1007/s12403-015-0170-x
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发表时间：
2016-09
影响因子：
6.7
通讯作者：
Jianhua Wu;Z. Sun
中科院分区：
文献类型：
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作者：
Jianhua Wu;Z. Sun
由于人类活动的加剧，地下水水质受到污染，影响人类健康。在这项研究中，地下水质量进行了评价，以更好地了解地下水污染的现状和潜在的风险，当地居民在冲积平原（中国），农业和工业活动密集。采用综合水质指数评价饮用水水质，采用钠吸附率、Na%、碳酸钠残留量评价灌溉水水质。还评估了通过口腔和皮肤途径摄入受污染地下水对人类健康造成的风险。评价结果表明，大部分水样总体上适合灌溉，但超过60%的水样不适合饮用，总硬度、NO3-、NO2-、TDS、SO 42-和F-是影响其饮用适宜性的主要污染物。研究区居民处于高健康风险中，主要来自工业和农业污染的NO3-是健康风险的最大贡献因素。此外，该地区儿童的健康风险高于成人，口服摄入是健康风险的主要暴露途径。因此，必须采取紧急和有效的措施来防治该地区的地下水污染，降低健康风险。
Intensive human activities have caused contamination to groundwater quality which consequently affects human health. In this study, an evaluation of groundwater quality was carried out for better understanding of the status of groundwater contamination and potential risks to local residents in an alluvial plain (China) where agricultural and industrial activities are intensive. Comprehensive water quality index was used for drinking water-quality assessment and sodium adsorption ratio, Na%, and residual sodium carbonate were applied for irrigation water-quality assessment. The human health risks caused by intake of the contaminated groundwater through the oral and dermal pathways were also assessed. The assessment results reveal that most of the water samples are generally suitable for irrigation purpose, but over 60 % of them are not fit for drinking, and the total hardness, NO3−, NO2−, TDS, SO42−, and F−are the main contaminants affecting its suitability for drinking purpose. Residents in the study area are at high health risk, and NO3−originating mainly from industrial and agricultural pollution is the greatest contributory cause of the health risks. Furthermore, children in this area are at higher health risk than adults, and oral ingestion is the dominate exposure pathway of health risk. Therefore, urgent and efficient measures must be taken to combat groundwater pollution and reduce health risk in the area.