气候变化领域集成服务门户(CCPortal): Mercury speciation and spatial distribution in surface waters of the Yarlung Zangbo River, Tibet

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DOI	10.1007/s11434-010-4001-y
	Mercury speciation and spatial distribution in surface waters of the Yarlung Zangbo River, Tibet
	Zheng Wei; Kang ShiChang; Feng XinBin; Zhang QiangGong; Li ChaoLiu
发表日期	2010
ISSN	1001-6538
卷号	55 期号:24
英文摘要	The Yarlung Zangbo River is the highest river in the world. It flows from west to east through the southern part of Tibet. The mercury (Hg) speciation and distribution in surface waters and soils near the bank of the Yarlung Zangbo River and its two tributaries, the Lhasa and Niyang Rivers, were investigated in June 2007. Simultaneously, major water quality parameters were also measured at the same stations. Total Hg (THg) and total methylmercury (TMeHg) concentrations in surface waters of the Yarlung Zangbo River ranged from 1.46 to 4.99 ng/L and from 0.06 to 0.29 ng/L, respectively, representing the background levels in river systems of the Tibetan Plateau. Particulate Hg (PHg) accounted for 69% of the THg, and the two Hg species had a significant relationship (r=0.990, P < 0.01). Approximately 61% of the spatial distribution of THg was controlled by the concentrations of total suspended particles (TSP). Reactive Hg (RHg) concentrations ranged from 0.10 to 0.36 ng/L, and this fraction may play a weak role in terms of the transport and fate of Hg in surface waters. Dissolved methylmercury (DMeHg) constituted 71% of the TMeHg and was significantly correlated with TMeHg (r=0.746, P < 0.01). The spatial distribution of TMeHg is not strongly affected by environmental factors such as THg, RHg, temperature, pH, dissolved organic carbon (DOC), and TSP. In addition, the inflow of both the Lhasa and Niyang Rivers probably influences the concentrations of THg in surface waters of the mainstream, but such an effect is not obvious for TMeHg.
关键词	Yarlung Zangbo River mercury speciation spatial distribution Tibet
学科领域	Science & Technology - Other Topics
语种	英语
WOS研究方向	Multidisciplinary Sciences
来源期刊	CHINESE SCIENCE BULLETIN
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/111573
作者单位	Chinese Acad Sci, Inst Tibetan Plateau Res, Lab Tibetan Environm Changes & Land Surface Proc, Beijing 100085, Peoples R China
推荐引用方式 GB/T 7714	Zheng Wei,Kang ShiChang,Feng XinBin,et al. Mercury speciation and spatial distribution in surface waters of the Yarlung Zangbo River, Tibet[J]. 中国科学院西北生态环境资源研究院,2010,55(24).
APA	Zheng Wei,Kang ShiChang,Feng XinBin,Zhang QiangGong,&Li ChaoLiu.(2010).Mercury speciation and spatial distribution in surface waters of the Yarlung Zangbo River, Tibet.CHINESE SCIENCE BULLETIN,55(24).
MLA	Zheng Wei,et al."Mercury speciation and spatial distribution in surface waters of the Yarlung Zangbo River, Tibet".CHINESE SCIENCE BULLETIN 55.24(2010).