气候变化领域集成服务门户(CCPortal): Spatiotemporal characterization of dissolved trace elements in the Gandaki River, Central Himalaya Nepal

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DOI	10.1016/j.jhazmat.2019.121913
	Spatiotemporal characterization of dissolved trace elements in the Gandaki River, Central Himalaya Nepal
	Pant, Ramesh Raj; Zhang, Fan; Rehman, Faizan Ur; Koirala, Madan; Rijal, Kedar; Maskey, Rejina
通讯作者	Zhang, F (通讯作者)
发表日期	2020
ISSN	0304-3894
EISSN	1873-3336
卷号	389
英文摘要	A comprehensive investigation was conducted on trace elements (TEs) in the glacier-fed Gandaki River Basin, Central Himalayas Nepal. A total of 93 water samples were collected from 31 locations in pre-monsoon, monsoon and post-monsoon seasons in 2016 to evaluate the concentrations of TEs. Multivariate statistical techniques such as analysis of variance, cluster analysis, principal component analysis, and correlation analysis were applied to investigate the spatiotemporal variations and identify the major sources of the TEs. The results classified most of the TEs into two groups. Group 1 including Cs, Li, Ni, Rb, Sc, Sr, Tl, U and V were from geogenic sources, while Group 2 including Cd, Co, Cr, Cu, Pb, Ti, Y and Zn were impacted by anthropogenic activities. Group 1 showed lower concentrations in the lower-middle and downstream segments with higher precipitation and the highest concentrations during pre-monsoon. In contrast, Group 2 demonstrated higher concentrations in the densely populated lower segments with more agriculture and industries, and the highest concentrations during the post-monsoon season. Comparing to the drinking water limits suggested that special attention should be paid to the elevated concentrations of Zn and As. The results of the study provide a basic guideline for future environmental protection in the Himalaya.
关键词	HEAVY-METAL CONTAMINATION HEALTH-RISK ASSESSMENT WATER-QUALITY TIBETAN PLATEAU BASIN GEOCHEMISTRY POLLUTION MOBILIZATION GROUNDWATER DEPOSITION
英文关键词	Spatiotemporal variations; Trace elements; Source identification; Eolian environments; Multivariate statistical techniques
语种	英语
WOS研究方向	Engineering ; Environmental Sciences & Ecology
WOS类目	Engineering, Environmental ; Environmental Sciences
WOS记录号	WOS:000524479100072
来源期刊	JOURNAL OF HAZARDOUS MATERIALS
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/259934
推荐引用方式 GB/T 7714	Pant, Ramesh Raj,Zhang, Fan,Rehman, Faizan Ur,et al. Spatiotemporal characterization of dissolved trace elements in the Gandaki River, Central Himalaya Nepal[J]. 中国科学院青藏高原研究所,2020,389.
APA	Pant, Ramesh Raj,Zhang, Fan,Rehman, Faizan Ur,Koirala, Madan,Rijal, Kedar,&Maskey, Rejina.(2020).Spatiotemporal characterization of dissolved trace elements in the Gandaki River, Central Himalaya Nepal.JOURNAL OF HAZARDOUS MATERIALS,389.
MLA	Pant, Ramesh Raj,et al."Spatiotemporal characterization of dissolved trace elements in the Gandaki River, Central Himalaya Nepal".JOURNAL OF HAZARDOUS MATERIALS 389(2020).