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学科主题: 地理学::自然地理学
题名: Influence of long-range transboundary transport on atmospheric water vapor mercury collected at the largest city of Tibet
作者: Huang, J (Huang, Jie)1, 3, 4; Kang, SC (Kang, Shichang)2, 3; Tian, LD (Tian, Lide)1, 3; Guo, JM (Guo, Junming)1, 5; Zhang, QG (Zhang, Qianggong)1, 3; Cong, ZY (Cong, Zhiyuan)1, 3; Sillanpaa, M (Sillanpaa, Mika)4; Sun, SW (Sun, Shiwei)2, 5; Tripathee, L (Tripathee, Lekhendra)2
通讯作者: Kang, SC
关键词: ORGANOCHLORINE PESTICIDES ; POLYCHLORINATED-BIPHENYLS ; PRECIPITATION CHEMISTRY ; PLATEAU CONCENTRATIONS ; ISOTOPIC COMPOSITION ; WET PRECIPITATION ; IONIC COMPOSITION ; TRACE-ELEMENTS ; CLOUD-WATER ; REMOTE SITE
刊名: SCIENCE OF THE TOTAL ENVIRONMENT
发表日期: 2016
DOI: 10.1016/j.scitotenv.2016.05.177
卷: 566, 期:0, 页:1215-1222
收录类别: SCI
合作性质: 国际
文章类型: Article
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.
语种: 英语
WOS记录号: WOS:000381060900116
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.itpcas.ac.cn/handle/131C11/7600
Appears in Collections:图书馆_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Beijing 100101, Peoples R China
2.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, State Key Lab Cryospher Sci, Lanzhou 730000, Peoples R China
3.Chinese Acad Sci, CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China
4.Lappeenranta Univ Technol, Lab Green Chem, Sammonkatu 12, FI-50130 Mikkeli, Finland
5.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China

Recommended Citation:
Huang, J ,Kang, SC ,Tian, LD ,et al. Influence of long-range transboundary transport on atmospheric water vapor mercury collected at the largest city of Tibet[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2016,566(0):1215-1222.
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