DOI: 10.1016/j.atmosenv.2014.07.023
Scopus记录号: 2-s2.0-84904249583
论文题名: Mercury distribution and variation on a high-elevation mountain glacier on the northern boundary of the Tibetan Plateau
作者: Huang J ; , Kang S ; , Guo J ; , Sillanpää M ; , Zhang Q ; , Qin X ; , Du W ; , Tripathee L
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2014
卷: 96 起始页码: 27
结束页码: 36
语种: 英语
英文关键词: Distribution
; Laohugou glacier no. 12
; Mercury
; Snow/ice
; Tibetan Plateau
; Variation
Scopus关键词: Mercury (metal)
; Solvents
; Concentration levels
; Distribution
; Laohugou glacier no. 12
; Mercury distribution
; Particulate Matter
; Peak concentrations
; Tibetan Plateau
; Variation
; Snow
; mercury
; snow
; climate effect
; concentration (composition)
; glacier
; mercury (element)
; mountain environment
; percolation
; altitude
; article
; China
; climate change
; concentration (parameters)
; ecosystem
; glacier
; particulate matter
; photoreduction
; priority journal
; reduction
; surface property
; China
; Qinghai-Xizang Plateau
Scopus学科分类: Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
英文摘要: In July 2013, snow/ice and streamwater samples were retrieved from a high-elevation mountain glacier (Laohugou Glacier No. 12) on the northern boundary of the Tibetan Plateau and were analysed for total Hg (HgT). Concentration levels of HgT in snow samples were higher than those from the central and southern part of the Tibetan Plateau. Most of the Hg in the snow/ice was found to be associated with particulate matter. A small daily variation of HgT in surface snow further suggested that snow Hg on the Tibetan Plateau was less influenced by the effect of post-depositional processes such as photoreduction. The variations in HgT peak concentration on the vertical profiles of the snowpits indicated that settling of particulate matter and percolation of snowmelt had caused an increase in Hg concentrations with increasing depth. No positive relationship was found between HgT and elevation in our study region, indicating that the "altitude effect" on Hg in surface snow may only exist on extremely high-elevation glaciers. Moreover, HgT concentrations in the surface ice were found to be the highest observed in this glacier. With ongoing climate warming, this is of particular concern in western China as the accumulated Hg released by accelerated glacier thinning and retreat may endanger ecosystems and human health in the glacier-fed downstream regions. © 2014 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81237
Appears in Collections: 气候变化事实与影响
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作者单位: Key Laboratory of Tibetan Environment Changes and Land Surface Processes, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100101, China; State Key Laboratory of Cryospheric Sciences, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Donggang West Road 320, Lanzhou 730000, China; Laboratory of Green Chemistry, Lappeenranta University of Technology, Sammonkatu 12, FI-50130 Mikkeli, Finland; University of Chinese Academy of Sciences, Beijing 100049, China
Recommended Citation:
Huang J,, Kang S,, Guo J,et al. Mercury distribution and variation on a high-elevation mountain glacier on the northern boundary of the Tibetan Plateau[J]. Atmospheric Environment,2014-01-01,96