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	The geochemical characteristics of dust material and dust sources identification in northwestern China
	Zhang, Zhengcai1; Dong, Zhibao1; Zhang, Caixia1; Qian, Guangqian1; Lei, Chunying2
刊名	JOURNAL OF GEOCHEMICAL EXPLORATION
	2017-04-01
卷号	175页码:148-155
关键词	Geochemical Trace element Major element Dust sources
ISSN号	0375-6742
DOI	10.1016/j.gexplo.2016.11.006
通讯作者	Zhang, Zhengcai(zhangzhsi@sina.com)
英文摘要	To determine dust sources in the northwestern China, the spatial distribution of dust geochemical elements in the Hexi Corridor Desert, a total of 40 samples were collected at a height of 1.5 m over sandy and gravel surfaces at six field sites. In this work, 21 trace elements and seven major oxides were analyzed. Land surface characteristics influenced the dust emission, and the percentages of transported silt, clay, silt/sand, and clay/sand at a height of 1.5 m were related to gravel cover and the percentage of 0.063-mm-sized grains at the surface. The SiO2 content was the highest (mean 6120 +/- 9.17%), whereas the K(2)Ocontent was the lowest (mean 1.9 +/- 0.3%) in all field sites. For the six sites, the Ti content was the highest (mean 3247.5 +/- 502.5 mu g/g) and the Nb content was the lowest (mean 9.6 +/- 1.9 g/g). At all sites, Co, As, and Nd were enriched, whereas Mn, Ti, Sr, Ce, Ni, Rb, Y, P, V, Ga, and Ba were depleted. P, Ti, V, Ni, Rb, Sr, Y, Ba, and La originated from crustal sources, and Cl, Cr, Cu, and Zn were sensitive to anthropogenic activity. The main transported trace elements were Ti, Mn, Ba, P, CI, Sr, and Zr, which accounted for >90% of the total trace elements. PCA analysis indicated that two principal components with eigenvalues > 1 could be extracted from the data. The relationship between Rb/Sr and Ba/Sr and between Fe/Al, Mg/Al, and Ca/AI was used to identify dust sources. Two dust sources were identified in northwestern China: one source comprised the Badain Jaran Desert, Tengger Desert, Hexi Corridor Desert, and part of the Inner Mongolian Gobi Desert, and the other source comprised the desert adjacent to Dunhuang Gobi Desert, and part of the Inner Mongolian Gobi Desert. (C) 2016 Elsevier B.V. All rights reserved.
收录类别	SCI
WOS关键词	ASIAN DUST ; TRANSPORT ; MINERALOGY ; SEDIMENTS ; EMISSION ; EPISODES ; DESERTS ; AEROSOL ; SOUTH
WOS研究方向	Geochemistry & Geophysics
WOS类目	Geochemistry & Geophysics
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000394472600014
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2557583
专题	寒区旱区环境与工程研究所
通讯作者	Zhang, Zhengcai
作者单位	1.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Key Lab Desert & Desertificat, Lanzhou 730000, Peoples R China 2.Xinjiang Acad Forestry Sci, Inst Afforestat & Sand Control, Urumqi 830063, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Zhengcai,Dong, Zhibao,Zhang, Caixia,et al. The geochemical characteristics of dust material and dust sources identification in northwestern China[J]. JOURNAL OF GEOCHEMICAL EXPLORATION,2017,175:148-155.
APA	Zhang, Zhengcai,Dong, Zhibao,Zhang, Caixia,Qian, Guangqian,&Lei, Chunying.(2017).The geochemical characteristics of dust material and dust sources identification in northwestern China.JOURNAL OF GEOCHEMICAL EXPLORATION,175,148-155.
MLA	Zhang, Zhengcai,et al."The geochemical characteristics of dust material and dust sources identification in northwestern China".JOURNAL OF GEOCHEMICAL EXPLORATION 175(2017):148-155.

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