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DOI	10.1016/j.scitotenv.2012.04.045
	Seasonal variations, speciation and possible sources of mercury in the snowpack of Zhadang glacier, Mt. Nyainqentanglha, southern Tibetan Plateau
	Huang, Jie; Kang, Shichang; Guo, Junming; Zhang, Qianggong; Xu, Jianzhong; Jenkins, Matt G.; Zhang, Guoshuai; Wang, Kang
发表日期	2012
ISSN	0048-9697
EISSN	1879-1026
卷号	429
英文摘要	Ten snowpits were sampled at the Zhadang glacier during 2008 and 2011 to investigate the seasonal variations, speciation, and sources of mercury (Hg) in the southern Tibetan Plateau. In the 2008 snowpit, total Hg (Hg-T), particulate matter, most of major ions were found in higher concentrations during the non-monsoon season than in the monsoon season. Analysis of Hg speciation indicated that Hg-T in the 2011 snowpits was dominated by particulate-bound Hg (Hg-P). Most of particulate matter in the 2008 snowpit was dominated by fine particulates, indicating that the influx of particulate matter and Hg-P was probably occurring by long-range transportation via general atmospheric circulation. Analysis of dominant ion Ca2+ and alkaline pH values has suggested that the long-range transported Hg-P, originating from dust storm activities, may be the most important source for Hg in the Zhadang glacier snowpit during the non-monsoon season. Backward-trajectory analysis indicates the majority of the air masses arriving at the Zhandang glacier originated from the arid regions of northwestern India (e.g., Thar Desert), confirming that arid regions in central and southern Asia are likely the main sources of Hg being deposited in the Zhadang glacier snowpit. This study also suggests that ice core records from the Tibetan Plateau may be useful tools for interpreting long-term historical records of atmospheric Hg deposition, and reconstructing Hg biogeochemical cycling. (C) 2012 Elsevier B.V. All rights reserved.
关键词	Mercury Seasonal variations Speciation Sources Snowpit Tibetan Plateau
学科领域	Environmental Sciences & Ecology
语种	英语
WOS研究方向	Environmental Sciences
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/111650
作者单位	Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Beijing 100101, Peoples R China
推荐引用方式 GB/T 7714	Huang, Jie,Kang, Shichang,Guo, Junming,et al. Seasonal variations, speciation and possible sources of mercury in the snowpack of Zhadang glacier, Mt. Nyainqentanglha, southern Tibetan Plateau[J]. 中国科学院西北生态环境资源研究院,2012,429.
APA	Huang, Jie.,Kang, Shichang.,Guo, Junming.,Zhang, Qianggong.,Xu, Jianzhong.,...&Wang, Kang.(2012).Seasonal variations, speciation and possible sources of mercury in the snowpack of Zhadang glacier, Mt. Nyainqentanglha, southern Tibetan Plateau.SCIENCE OF THE TOTAL ENVIRONMENT,429.
MLA	Huang, Jie,et al."Seasonal variations, speciation and possible sources of mercury in the snowpack of Zhadang glacier, Mt. Nyainqentanglha, southern Tibetan Plateau".SCIENCE OF THE TOTAL ENVIRONMENT 429(2012).