干旱区生态环境知识资源中心(Arid): Controlling mechanism and water quality assessment of arsenic in China's Yellow River Basin

Arid

DOI	10.1016/j.jclepro.2023.137953
	Controlling mechanism and water quality assessment of arsenic in China's Yellow River Basin
	Li, Xiaoke; Xiao, Jun; Chai, Ningpan; Jin, Zhangdong
通讯作者	Xiao, J
来源期刊	JOURNAL OF CLEANER PRODUCTION
ISSN	0959-6526
EISSN	1879-1786
出版年	2023
卷号	418
英文摘要	Arsenic (As) is a well-known toxic and carcinogen element, and As contamination has gained public concerns worldwide. Mechanisms, sources, and potential health risks of high As in the China's Yellow River Basin (CYRB), a water-deficient area and the largest loess deposition area in the world, remain largely unknown. Hydrogen and oxygen isotopes, major ions, and As were analyzed in 409 river water and 164 groundwater samples in dry season to decipher these problems. Samples were alkaline (pH = 8.0 & PLUSMN; 0.4), and As concentrations (5.29 & PLUSMN; 10.5 & mu;g/L) in the CYRB were above the world average, especially in upstream and midstream. About 9.1% and 13.0% of samples in river water and groundwater had As concentrations above the permissible limit of WHO, respectively. Based on self-organizing map (SOM) analysis, about 50.6% of samples with high As were SO4-Cl-Na type while about 46.4% of samples with low As were HCO3-Ca-Mg type. The & delta;D (-62.5 & PLUSMN; 11.3%o) and & delta;18O (-8.5 & PLUSMN; 2.1%o) values of river water were higher than the groundwater (& delta;D = -69.7 & PLUSMN; 10.2%o, & delta;18O = -9.9 & PLUSMN; 1.4%o), and most samples with As >10 & mu;g/L were below the local and global meteoric water lines, indicating the evaporation effect on As enrichment, especially for river water. Evaporites dissolution of loess and ion exchange increased water salinity, accelerated desorption of As and enriched As in CYRB. Meanwhile, oil and coal exploitation contributed to the high As in the northwestern Loess Plateau. Health risk assessment indicated that 41.6% and 59.8% of groundwater samples posed high carcinogenic risk for adults and children, respectively. Therefore, corresponding measures must be implemented in these areas. In the future, As geochemistry in wet seasons in the CYRB and the characteristics among different seasons will be explored. These results highlight the impact of dry climate and anthropogenic activity on As enrichment in arid/semi-arid regions.
英文关键词	Yellow River Basin As enrichment Health risk assessment Stable isotope
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001052108300001
WOS关键词	TRACE-ELEMENTS ; RISK-ASSESSMENT ; LOESS PLATEAU ; HETAO BASIN ; GROUNDWATER ; MOBILITY ; IDENTIFICATION ; CONTAMINATION ; POLLUTION ; AQUIFERS
WOS类目	Green & Sustainable Science & Technology ; Engineering, Environmental ; Environmental Sciences
WOS研究方向	Science & Technology - Other Topics ; Engineering ; Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/397229
推荐引用方式 GB/T 7714	Li, Xiaoke,Xiao, Jun,Chai, Ningpan,et al. Controlling mechanism and water quality assessment of arsenic in China's Yellow River Basin[J],2023,418.
APA	Li, Xiaoke,Xiao, Jun,Chai, Ningpan,&Jin, Zhangdong.(2023).Controlling mechanism and water quality assessment of arsenic in China's Yellow River Basin.JOURNAL OF CLEANER PRODUCTION,418.
MLA	Li, Xiaoke,et al."Controlling mechanism and water quality assessment of arsenic in China's Yellow River Basin".JOURNAL OF CLEANER PRODUCTION 418(2023).