气候变化领域集成服务门户(CCPortal): Groundwater quality characteristics and health risk assessment in the valley plain area of the western Qinghai-Tibet plateau

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DOI	10.1016/j.jconhyd.2023.104221
	Groundwater quality characteristics and health risk assessment in the valley plain area of the western Qinghai-Tibet plateau
	Li, Qingshan; Kang, Xiaobing; Lin, Guangxin; Yang, Guangyan; Wu, Pengsheng; Zuo, Wei; Xie, Tengjiao; Liu, Yang
发表日期	2023
ISSN	0169-7722
EISSN	1873-6009
卷号	257
英文摘要	Accurate evaluation of groundwater chemistry, quality, and human health risk could provide detailed and robust evidence of groundwater utilization. Gaer County is an important residential area in western Tibet. A total of 52 samples were collected from the Shiquan River Basin in Gaer County in 2021. Principal component analysis, ratiometric analysis of major ions, and geochemical modeling were conducted to clarify the characteristics of hydrogeochemical compositions and the controlling factors. The groundwater chemistry type is dominated by HCO3-Ca, and its ion concentration from high to low is Ca2+ > Na+ > Mg2+ > K+ and HCO3 � > SO42 � > Cl- > NO3 � > F. The groundwater compositions were determined by calcite and dolomite dissolution with cation exchange reaction. The human activity causes nitrate contamination, while arsenic contamination is attributed to surface water recharge. According to the Water Quality Index, 99% of the samples meet the requirements of drinking water. Groundwater quality is affected by the arsenic, fluoride, and nitrate concentrations. According to the human health risk assessment model, the cumulative noncarcinogenic risk (HITotal) values for children and the CR values of arsenic (CRArsenic) for adults are higher than 1 and 1E-6, respectively, which are unacceptable risk values. Therefore, appropriate remedial measures are recommended to reduce nitrate and arsenic concentrations in groundwater sources for protecting against further health risks. This study can provide theoretical support and effective groundwater management experience for ensuring groundwater safety in Gaer County and other similar regions around the world.
关键词	Groundwater chemistry Arsenic contamination Health risk assessment Western Tibet
英文关键词	REGION; BASIN; WATER
WOS研究方向	Environmental Sciences ; Geosciences, Multidisciplinary ; Water Resources
WOS记录号	WOS:001039618400001
来源期刊	JOURNAL OF CONTAMINANT HYDROLOGY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/282814
作者单位	Chengdu University of Technology
推荐引用方式 GB/T 7714	Li, Qingshan,Kang, Xiaobing,Lin, Guangxin,et al. Groundwater quality characteristics and health risk assessment in the valley plain area of the western Qinghai-Tibet plateau[J],2023,257.
APA	Li, Qingshan.,Kang, Xiaobing.,Lin, Guangxin.,Yang, Guangyan.,Wu, Pengsheng.,...&Liu, Yang.(2023).Groundwater quality characteristics and health risk assessment in the valley plain area of the western Qinghai-Tibet plateau.JOURNAL OF CONTAMINANT HYDROLOGY,257.
MLA	Li, Qingshan,et al."Groundwater quality characteristics and health risk assessment in the valley plain area of the western Qinghai-Tibet plateau".JOURNAL OF CONTAMINANT HYDROLOGY 257(2023).