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DOI	10.1016/j.atmosenv.2016.03.028
	First field-based atmospheric observation of the reduction of reactive mercury driven by sunlight
	de Foy, Benjamin; Tong, Yindong; Yin, Xiufeng; Zhang, Wei; Kang, Shichang; Zhang, Qianggong; Zhang, Guoshuai; Wang, Xuejun; Schauer, James J.
发表日期	2016
ISSN	1352-2310
EISSN	1873-2844
卷号	134
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.
关键词	Atmospheric mercury Mercury chemistry Photolytic reduction Chemical box model Tibetan plateau
学科领域	Environmental Sciences & Ecology; Meteorology & Atmospheric Sciences
语种	英语
WOS研究方向	Environmental Sciences ; Meteorology & Atmospheric Sciences
来源期刊	ATMOSPHERIC 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/111843
作者单位	St Louis Univ, Dept Earth & Atmospher Sci, St Louis, MO 63103 USA
推荐引用方式 GB/T 7714	de Foy, Benjamin,Tong, Yindong,Yin, Xiufeng,et al. First field-based atmospheric observation of the reduction of reactive mercury driven by sunlight[J]. 中国科学院西北生态环境资源研究院,2016,134.
APA	de Foy, Benjamin.,Tong, Yindong.,Yin, Xiufeng.,Zhang, Wei.,Kang, Shichang.,...&Schauer, James J..(2016).First field-based atmospheric observation of the reduction of reactive mercury driven by sunlight.ATMOSPHERIC ENVIRONMENT,134.
MLA	de Foy, Benjamin,et al."First field-based atmospheric observation of the reduction of reactive mercury driven by sunlight".ATMOSPHERIC ENVIRONMENT 134(2016).