气候变化领域集成服务门户(CCPortal): Mercury Distribution and Deposition in Glacier Snow over Western China

CCPortal

DOI	10.1021/es300166x
	Mercury Distribution and Deposition in Glacier Snow over Western China
	Zhang, Qianggong; Huang, Jie; Wang, Feiyue; Mark, Loewen; Xu, Jianzhong; Armstrong, Debbie; Li, Chaoliu; Zhang, Yulan; Kang, Shichang
发表日期	2012
ISSN	0013-936X
卷号	46 期号:10
英文摘要	Western China is home to the largest aggregate of glaciers outside the polar regions, yet little is known about how the glaciers in this area affect the transport and cycling of mercury (Hg) regionally and globally. From 2005 to 2010, extensive glacier snow sampling campaigns were carried out in 14 snowpits from 9 glaciers over western China, and the vertical distribution profiles of Hg were obtained. The Total Hg (THg) concentrations in the glacier snow ranged from <1 to 43.6 ng L-1, and exhibited clear seasonal variations with lower values in summer than in winter. Spatially, higher THg concentrations were typically observed in glacier snows from the northern region where atmospheric particulate loading is comparably high. Glacier snowpit Hg was largely dependent on particulate matters and was associated with particulate Hg, which is less prone to postdepositional changes, thus providing a valuable record of atmospheric Ng deposition. Estimated atmospheric Hg depositional fluxes ranged from 0.74 to 7.89 mu g m(-2) yr(-1), agreeing very well with the global natural values, but are one to two orders of magnitude lower than that of the neighboring East Asia. Elevated Hg concentrations were observed in refrozen ice layers in several snowpits subjected to intense melt, indicating that Hg can be potentially released to meltwater.
学科领域	Engineering; Environmental Sciences & Ecology
语种	英语
WOS研究方向	Engineering, Environmental ; Environmental Sciences
来源期刊	ENVIRONMENTAL SCIENCE & TECHNOLOGY
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/111653
作者单位	Chinese Acad Sci, Key Lab Tibetan Environm Changes & Land Surface P, Inst Tibetan Plateau Res, Beijing 100101, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Qianggong,Huang, Jie,Wang, Feiyue,et al. Mercury Distribution and Deposition in Glacier Snow over Western China[J]. 中国科学院西北生态环境资源研究院,2012,46(10).
APA	Zhang, Qianggong.,Huang, Jie.,Wang, Feiyue.,Mark, Loewen.,Xu, Jianzhong.,...&Kang, Shichang.(2012).Mercury Distribution and Deposition in Glacier Snow over Western China.ENVIRONMENTAL SCIENCE & TECHNOLOGY,46(10).
MLA	Zhang, Qianggong,et al."Mercury Distribution and Deposition in Glacier Snow over Western China".ENVIRONMENTAL SCIENCE & TECHNOLOGY 46.10(2012).