气候变化领域集成服务门户(CCPortal): Influence of long-range transboundary transport on atmospheric water vapor mercury collected at the largest city of Tibet

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DOI	10.1016/j.scitotenv.2016.05.177
	Influence of long-range transboundary transport on atmospheric water vapor mercury collected at the largest city of Tibet
	Huang, Jie; Kang, Shichang; Tian, Lide; Guo, Junming; Zhang, Qianggong; Cong, Zhiyuan; Sillanpaa, Mika; Sun, Shiwei; Tripathee, Lekhendra
发表日期	2016
ISSN	0048-9697
EISSN	1879-1026
卷号	566
英文摘要	Monsoon circulation is an important process that affects long-range transboundary transport of anthropogenic contaminants such as mercury (Hg). During the Indian monsoon season of 2013, a total of 92 and 26 atmospheric water vapor samples were collected at Lhasa, the largest city of the Tibet, for Hg and major ions analysis, respectively. The relatively low pH/high electronic conductivity values, together with the fact that NH4+ in atmospheric water vapor was even higher than that determined in precipitation of Lhasa, indicated the effects of anthropogenic perturbations through long-range transboundary atmospheric transport. Concentrations of Hg in atmospheric water vapor ranged from 2.5 to 73.7 ng L-1, with an average of 12.5 ng L-1. The elevated Hg and major ions concentrations, and electronic conductivity values were generally associated with weak acidic samples, and Hg mainly loaded with anthropogenic ions such as NH4+. The results of principal component analysis and trajectory analysis suggested that anthropogenic emissions from the Indian subcontinent may have largely contributed to the determined Hg in atmospheric water vapor. Furthermore, our study reconfirmed that below-cloud scavenging contribution was significant for precipitation Hg in Lhasa, and evaluated that on average 74.1% of the Hg in precipitation could be accounted for by below-cloud scavenging. (C) 2016 Elsevier B.V. All rights reserved.
关键词	Mercury Atmospheric water vapor Monsoon circulation Long-range transboundary atmospheric transport 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/111831
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,Tian, Lide,et al. Influence of long-range transboundary transport on atmospheric water vapor mercury collected at the largest city of Tibet[J]. 中国科学院西北生态环境资源研究院,2016,566.
APA	Huang, Jie.,Kang, Shichang.,Tian, Lide.,Guo, Junming.,Zhang, Qianggong.,...&Tripathee, Lekhendra.(2016).Influence of long-range transboundary transport on atmospheric water vapor mercury collected at the largest city of Tibet.SCIENCE OF THE TOTAL ENVIRONMENT,566.
MLA	Huang, Jie,et al."Influence of long-range transboundary transport on atmospheric water vapor mercury collected at the largest city of Tibet".SCIENCE OF THE TOTAL ENVIRONMENT 566(2016).