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DOI	10.1007/s11356-015-4498-3
	Distribution and enrichment of mercury in Tibetan lake waters and their relations with the natural environment
	Li, Chengding; Zhang, Qianggong; Kang, Shichang; Liu, Yongqin; Huang, Jie; Liu, Xiaobo; Guo, Junming; Wang, Kang; Cong, Zhiyuan
发表日期	2015
ISSN	0944-1344
EISSN	1614-7499
卷号	22 期号:16
英文摘要	Mercury (Hg) in aquatic ecosystems is of great concern due to its toxicity, bioaccumulation, and magnification in the food web. The Tibetan Plateau (TP) is endowed with the highest and largest lakes on earth, whereas Hg distribution and behavior in lake waters are least known. In this study, surface water samples from 38 lakes over the TP were collected and determined for the total Hg (THg) concentrations. Results revealed a wide range of THg concentrations from <1 ng to 40.3 ng L-1. THg in lake waters exhibited an increasing trend along the southeast to northwest transect over the TP. Strong positive correlations were observed between THg concentrations and salinity and salinity-related environmental variables, especially for total dissolved solids (TDS) and some of the major ions such as Na+, K+, and Cl-, suggesting the enrichment of Hg in saline lakes. The large-scale geographical pattern of climatic and environmental factors shows a decreasing precipitation and an increasing evaporation northwards and westwards and thereby induces gradient-enhanced enrichment of soluble substances in lake waters, which are likely to complex more Hg in northwestern TP. Our study provides the first comprehensive baseline data set of Hg in Tibetan lake waters and highlights the concurrent high Hg and salinity, representing valuable references and fundamental rules in further understanding the behavior and fate of Hg in lakes over the TP and perhaps high-altitude regions beyond.
关键词	Lake Water Mercury Tibetan Plateau Distribution Enrichment
学科领域	Environmental Sciences & Ecology
语种	英语
WOS研究方向	Environmental Sciences
来源期刊	ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
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/111764
作者单位	Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Beijing 100101, Peoples R China
推荐引用方式 GB/T 7714	Li, Chengding,Zhang, Qianggong,Kang, Shichang,et al. Distribution and enrichment of mercury in Tibetan lake waters and their relations with the natural environment[J]. 中国科学院西北生态环境资源研究院,2015,22(16).
APA	Li, Chengding.,Zhang, Qianggong.,Kang, Shichang.,Liu, Yongqin.,Huang, Jie.,...&Cong, Zhiyuan.(2015).Distribution and enrichment of mercury in Tibetan lake waters and their relations with the natural environment.ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,22(16).
MLA	Li, Chengding,et al."Distribution and enrichment of mercury in Tibetan lake waters and their relations with the natural environment".ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH 22.16(2015).