干旱区生态环境知识资源中心(Arid): Quantitative identification of groundwater contamination sources by combining isotope tracer technique with PMF model in an arid area of northwestern China

Arid

DOI	10.1016/j.jenvman.2022.116588
	Quantitative identification of groundwater contamination sources by combining isotope tracer technique with PMF model in an arid area of northwestern China
	Zhang, Qianqian; Wang, Huiwei; Xu, Zhifang; Li, Gan; Yang, Mingnan; Liu, Jingtao
通讯作者	Zhang, QQ
来源期刊	JOURNAL OF ENVIRONMENTAL MANAGEMENT
ISSN	0301-4797
EISSN	1095-8630
出版年	2023
卷号	325
英文摘要	Nowadays, groundwater quality has deteriorated because of intensive human activities. It is important to accurately identify the pollution source for controlling the deterioration of groundwater quality. However, the accuracy of the current source analysis method needs to be improved. In this study, we combined hydrochemical method, isotope tracing technique and PMF model, for the first time, to trace the source of groundwater pollution in Beichuan River basin, Qinghai Province, China. According to the results, there were 35.8% of Fe, 34.1% of total hardness, 24.3% of SO42- and 8.09% of NO3- samples exceeded the Grade III standards for Groundwater quality in China, which indicated that the groundwater in the study area has been significantly affected by human activities. Hydrochemical method suggested that the chemical component originated from rock weath-ering, cation exchange and mineral dissolution. Based on isotope tracing technique (delta N-15-NO3-, delta O-18-NO3-, delta S-34-SO42- and delta O-18-SO42-), the primary sources of nitrate and sulfate in groundwater were soil nitrogen and oxidation of sulfide minerals in the forest area, domestic sewage and oxidation of sulfide minerals in the urban and industrial area, and mixed sources in the village and agricultural area. Finally, the pollution source of groundwater was distinguished by combining the PMF model, isotope tracing technique and hydrochemical method. Results showed that the main pollutant of groundwater is domestic sewage in the urban, village and industrial area. The contribution rates to groundwater pollution were 60.7%, 60.8% and 57.8%, respectively. However, in the forest and agricultural area, the main source changed to water-rock interaction and chemical fertilizer, and the contribution rates to groundwater quality were 53.5% and 61.0%, respectively. Our results suggested that the coupling tracing methodology can improve the accuracy of source resolution in the water environment and it can be applied to other areas of the world.
英文关键词	Groundwater Isotope PMF model Hydrochemistry Pollution sources
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000889840900005
WOS关键词	SOURCE APPORTIONMENT ; POLLUTION SOURCES ; RISK-ASSESSMENT ; WATER-QUALITY ; NITRATE ; REGION ; VALLEY ; PM2.5 ; RIVER ; PM10
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/2XILL650/397267
推荐引用方式 GB/T 7714	Zhang, Qianqian,Wang, Huiwei,Xu, Zhifang,et al. Quantitative identification of groundwater contamination sources by combining isotope tracer technique with PMF model in an arid area of northwestern China[J],2023,325.
APA	Zhang, Qianqian,Wang, Huiwei,Xu, Zhifang,Li, Gan,Yang, Mingnan,&Liu, Jingtao.(2023).Quantitative identification of groundwater contamination sources by combining isotope tracer technique with PMF model in an arid area of northwestern China.JOURNAL OF ENVIRONMENTAL MANAGEMENT,325.
MLA	Zhang, Qianqian,et al."Quantitative identification of groundwater contamination sources by combining isotope tracer technique with PMF model in an arid area of northwestern China".JOURNAL OF ENVIRONMENTAL MANAGEMENT 325(2023).