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	Temporal and diurnal analysis of trace elements in the Cryospheric water at remote Laohugou basin in northeast Tibetan Plateau
	Dong, Zhiwen1; Kang, Shichang1,2; Qin, Dahe1; Qin, Xiang1,3; Yan, Fangping1; Du, Wentao1; Wei, Ting1
刊名	CHEMOSPHERE
	2017-03-01
卷号	171页码:386-398
关键词	Trace elements REE Enrichment factors Cryospheric water Northeast Tibetan Plateau
ISSN号	0045-6535
DOI	10.1016/j.chemosphere.2016.12.088
通讯作者	Dong, Zhiwen(dongzhiwen@lzb.ac.cn) ; Kang, Shichang(shichang.kang@lzb.ac.cn)
英文摘要	An evaluation of glacial meltwater chemistry is needed under recent dramatic glacier melting when water resources might be significantly impacted. This study investigated trace elements variation in the meltwater stream, and its related aquatic environmental information, at the Laohugou (LHG) glacier basin (4260 m a.s.l.) at a remote location in northeast Tibetan Plateau. We focused on the spatial, temporal and diurnal change of trace elements during the glacier ablation period. Results showed evident elements spatial difference on the glacier surface meltwater, as most of the elements showed increased concentration at the terminus compared to higher elevations sites. Dominant elements in the meltwater were Ba, Sr and Cr, whereas elements with high enrichment factors (EFs) were Sb, Ni, Mo and Zn. Temporal change of some trace elements concentration (e.g. Sc, Cu, and Rb) indicated increasing trend with accelerated snow-ice melting, whereas others (e.g. Ni, Zn, and Pb) showed decreasing trend. We find that, trace elements showed evident diurnal change and a peak value of concentration was observed each day at about 15:00-17:00, and the diurnal change was influenced by runoff level and pH. Moreover, EFs calculations revealed that heavy metals were partially originated from regional anthropogenic sources. Overall, the accelerated diurnal and temporal snow-ice melting (with high runoff level) were correlated to increased elemental concentration, pH, EC and elemental change mode, and thus this work is of great importance for evaluating the impacts of accelerated glacier melting to meltwater chemistry and downstream ecosystem in the northeast Tibetan Plateau. (C) 2016 Elsevier Ltd. All rights reserved.
收录类别	SCI
WOS关键词	HEAVY-METALS ; ICE CORES ; GLACIER ; CHINA ; PROVENANCE ; INSIGHTS ; SNOW ; DEPOSITION ; HIMALAYAS ; AEROSOLS
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000393931100046
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2557609
专题	寒区旱区环境与工程研究所
通讯作者	Dong, Zhiwen; Kang, Shichang
作者单位	1.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, State Key Lab Cryosphere Sci, Lanzhou 730000, Peoples R China 2.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China 3.Chinese Acad Sci, Qilian Mt Glacier & Ecol Environm Res Stn, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Dong, Zhiwen,Kang, Shichang,Qin, Dahe,et al. Temporal and diurnal analysis of trace elements in the Cryospheric water at remote Laohugou basin in northeast Tibetan Plateau[J]. CHEMOSPHERE,2017,171:386-398.
APA	Dong, Zhiwen.,Kang, Shichang.,Qin, Dahe.,Qin, Xiang.,Yan, Fangping.,...&Wei, Ting.(2017).Temporal and diurnal analysis of trace elements in the Cryospheric water at remote Laohugou basin in northeast Tibetan Plateau.CHEMOSPHERE,171,386-398.
MLA	Dong, Zhiwen,et al."Temporal and diurnal analysis of trace elements in the Cryospheric water at remote Laohugou basin in northeast Tibetan Plateau".CHEMOSPHERE 171(2017):386-398.

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