气候变化领域集成服务门户(CCPortal): Atmospheric pollution revealed by trace elements in recent snow from the central to the northern Tibetan Plateau

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DOI	10.1016/j.envpol.2020.114459
	Atmospheric pollution revealed by trace elements in recent snow from the central to the northern Tibetan Plateau
	Li, Yuefang; Huang, Ju; Li, Zhen; Zheng, Kui
通讯作者	Li, YF (通讯作者)
发表日期	2020
ISSN	0269-7491
EISSN	1873-6424
卷号	263
英文摘要	In order to determine the current levels, spatial distribution patterns, and potential pollution of trace elements (TEs) in the atmosphere of the Tibetan Plateau (TP), snow pit samples were collected in May 2016 from five TP glaciers: Qiyi (QY), Hariqin (HRQ), Meikuang (MK), Yuzhufeng (YZF), and Xiao-dongkemadi (XDKMD). Concentrations of 13 TEs (Al, Ba, Cd, Co, Cr, Cu, Fe, Li, Pb, Sb, Sr, U, and Zn) in the snow were measured. The spatial distribution patterns and depth profiles of TEs from the studies sites revealed that the influence of dust on TEs was more significant on the MK and YZF glaciers than on the QY, HRQ, and XDKMD glaciers. The spatial distributions of TE EFFe values differed from their concentrations, however. The enrichment factor (EF) values and concentrations of some TEs in the YZF, QY, and XDKMD glaciers revealed that the pollution levels of these elements were significantly lower than those found in previous research. Examination based on EFs, principal component analysis, as well as the calculated non-dust contributions of TEs, revealed that dust was the principal source for most TEs in all five glaciers, while biomass burning was another potential natural source for TEs in some glaciers, such as QY. In contrast, Cd, Ba, Sr, Cu, Pb, Zn, and Sb were occasionally affected by anthropogenic sources such as road traffic emissions, fossil fuel combustion, and mining and smelting of nonferrous metals in and beyond the TP. Air mass backward trajectories revealed that potential pollutants were transported not only from local sources but also from Xinjiang Province in northwestern China, as well as South Asia, Central Asia, the Middle East, and Europe. (c) 2020 Elsevier Ltd. All rights reserved.
关键词	HEAVY-METALS ICE-CORE SEASONAL-VARIATIONS ANTHROPOGENIC LEAD ANTARCTIC SNOW CENTRAL-ASIA RECORD ENRICHMENT DEPOSITION EMISSIONS
英文关键词	Trace elements; EF values; Spatial distribution pattern; Pollution; Tibetan glaciers
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
WOS记录号	WOS:000539426400004
来源期刊	ENVIRONMENTAL POLLUTION
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/259721
推荐引用方式 GB/T 7714	Li, Yuefang,Huang, Ju,Li, Zhen,et al. Atmospheric pollution revealed by trace elements in recent snow from the central to the northern Tibetan Plateau[J]. 中国科学院青藏高原研究所,2020,263.
APA	Li, Yuefang,Huang, Ju,Li, Zhen,&Zheng, Kui.(2020).Atmospheric pollution revealed by trace elements in recent snow from the central to the northern Tibetan Plateau.ENVIRONMENTAL POLLUTION,263.
MLA	Li, Yuefang,et al."Atmospheric pollution revealed by trace elements in recent snow from the central to the northern Tibetan Plateau".ENVIRONMENTAL POLLUTION 263(2020).