干旱区生态环境知识资源中心(Arid): Co-occurrence of geogenic and anthropogenic contaminants in groundwater from Rajasthan, India

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DOI	10.1016/j.scitotenv.2019.06.334
	Co-occurrence of geogenic and anthropogenic contaminants in groundwater from Rajasthan, India
	Coyte, Rachel M.1; Singh, Anjali 2; Furst, Kirin E.3; Mitch, William A.3; Vengosh, Avner 1
通讯作者	Vengosh, Avner
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2019
卷号	688 页码:1216-1227
英文摘要	Northwest India suffers from severe water scarcity issues due to a combination of over-exploitation and climate effects. Along with concerns over water availability, endemic water quality issues are critical and affect the usability of available water and potential human health risks. Here we present data from 243 groundwater wells, representing nine aquifer lithologies in 4 climate regions that were collected from the Northwestern Indian state of Rajasthan. Rajasthan is India's largest state by area, and has a significant groundwater reliant population due to a general lack of surface water accessibility. We show that the groundwater, including water that is used for drinking without any treatment, contains multiple inorganic contaminants in levels that exceed both Indian and World Health Organization (WHO) drinking water guidelines. The most egregious of these violations were for fluoride, nitrate, and uranium; 76% of all water samples in this study had contaminants levels that exceed the WHO guidelines for at least one of these species. In addition, we show that much of the groundwater contains high concentrations of dissolved organic carbon (DOC) and halides, both of which are risk factors for the formation of disinfectant byproducts in waters that are treated with chemical disinfectants such as chlorine. By using geochemical and isotopic (oxygen, hydrogen, carbon, strontium, and boron isotopes) data, we show that the water quality issues derive from both geogenic (evapotranspiration, water-rock interactions) and anthropogenic (agriculture, domestic sewage) sources, though in some cases anthropogenic activities, such as infiltration of organic- and nitrate-rich water, may contribute to the persistence and enhanced mobilization of geogenic contaminants. The processes affecting Rajasthan's groundwater quality are common in many other worldwide arid areas, and the lessons learned from evaluation of the mechanisms that affect the groundwater quality are universal and should be applied for other parts of the world. (C) 2019 Elsevier B.V. All rights reserved.
英文关键词	Geochemistry Water quality Rajasthan India Geogenic contaminants Isotope tracers Geohealth
类型	Article
语种	英语
国家	USA ; India
收录类别	SCI-E
WOS记录号	WOS:000481589100120
WOS关键词	DISSOLVED ORGANIC-CARBON ; DRINKING-WATER ; WEST-BENGAL ; PHYSICOCHEMICAL PROPERTIES ; STABLE-ISOTOPE ; HIGH-FLUORIDE ; URANIUM ; DEPLETION ; QUALITY ; BANGLADESH
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/218719
作者单位	1.Duke Univ, Nicholas Sch Environm, Div Earth & Ocean Sci, Durham, NC 27708 USA; 2.Mohanlal Sukhadia Univ, Dept Geol, Udaipur 313001, Rajasthan, India; 3.Stanford Univ, Dept Civil & Environm Engn, Stanford, CA 94305 USA
推荐引用方式 GB/T 7714	Coyte, Rachel M.,Singh, Anjali,Furst, Kirin E.,et al. Co-occurrence of geogenic and anthropogenic contaminants in groundwater from Rajasthan, India[J],2019,688:1216-1227.
APA	Coyte, Rachel M.,Singh, Anjali,Furst, Kirin E.,Mitch, William A.,&Vengosh, Avner.(2019).Co-occurrence of geogenic and anthropogenic contaminants in groundwater from Rajasthan, India.SCIENCE OF THE TOTAL ENVIRONMENT,688,1216-1227.
MLA	Coyte, Rachel M.,et al."Co-occurrence of geogenic and anthropogenic contaminants in groundwater from Rajasthan, India".SCIENCE OF THE TOTAL ENVIRONMENT 688(2019):1216-1227.