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学科主题: 地理学::自然地理学
题名: First field-based atmospheric observation of the reduction of reactive mercury driven by sunlight
作者: de Foy, B (de Foy, Benjamin)1; Tong, YD (Tong, Yindong)2; Yin, XF (Yin, Xiufeng)3; Zhang, W (Zhang, Wei)4; Kang, SC (Kang, Shichang)3, 5; Zhang, QG (Zhang, Qianggong)5, 6; Zhang, GS (Zhang, Guoshuai)6; Wang, XJ (Wang, Xuejun)7; Schauer, JJ (Schauer, James J.)8
通讯作者: de Foy, B
刊名: ATMOSPHERIC ENVIRONMENT
发表日期: 2016
DOI: 10.1016/j.atmosenv.2016.03.028
卷: 134, 期:0, 页:27-39
收录类别: SCI
合作性质: 国际
文章类型: Article
英文摘要: Hourly speciated measurements of atmospheric mercury made in a remote, high-altitude site in the Tibetan Plateau revealed the first field observations of the reduction of reactive mercury in the presence of sunlight in the atmosphere. Measurements were collected over four winter months on the shore of Nam Co Lake in the inland Tibetan Plateau. The data was analyzed to identify sources and atmospheric transformations of the speciated mercury compounds. The absence of local anthropogenic sources provided a unique opportunity to examine chemical transformations of mercury. An optimization algorithm was used to determine the parameters of a chemical box model that would match the measured reactive mercury concentrations. This required the presence of a photolytic reduction reaction previously observed in laboratory studies and in power plant plumes. In addition, the model estimated the role of vertical mixing in diluting reactive gaseous mercury during the day, and the role of bromine chemistry in oxidizing gaseous elemental mercury to produce reactive gaseous mercury. This work provides further evidence of the need to add the photolytic reduction reaction of oxidized mercury into atmospheric transport models in order to better simulate mercury deposition. (C) 2016 Elsevier Ltd. All rights reserved.
语种: 英语
WOS记录号: WOS:000375504100004
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.itpcas.ac.cn/handle/131C11/7693
Appears in Collections:图书馆_期刊论文

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作者单位: 1.St Louis Univ, Dept Earth & Atmospher Sci, St Louis, MO 63103 USA
2.Tianjin Univ, Sch Environm Sci & Engn, Tianjin, Peoples R China
3.Chinese Acad Sci, State Key Lab Cryospher Sci, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou, Peoples R China
4.Renmin Univ China, Sch Environm & Nat Resources, Beijing, Peoples R China
5.Chinese Acad Sci, Ctr Excellence Tibetan Plateau Earth Sci, Beijing, Peoples R China
6.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Beijing, Peoples R China
7.Peking Univ, Coll Urban & Environm Sci, Beijing 100871, Peoples R China
8.Univ Wisconsin, Civil & Environm Engn, Madison, WI 53706 USA

Recommended Citation:
de Foy, B ,Tong, YD ,Yin, XF ,et al. First field-based atmospheric observation of the reduction of reactive mercury driven by sunlight[J]. ATMOSPHERIC ENVIRONMENT,2016,134(0):27-39.
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