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Elemental profiles and signatures of fugitive dusts from Chinese deserts
Zhang, R (Zhang, Rong)[ 1 ]; Cao, JJ (Cao, Junji)[ 1 ]; Tang, YR (Tang, Yanrong)[ 1 ]; Arimoto, R (Arimoto, Richard)[ 1 ]; Shen, ZX (Shen, Zhenxing)[ 2 ]; Wu, F (Wu, Feng)[ 1 ]; Han, YM (Han, Yongming)[ 1 ]; Wang, GH (Wang, Gehui)[ 1 ]; Zhang, JQ (Zhang, Jiaquan)[ 3 ]; Li, GH (Li, Guohui)[ 1 ]
2014-02-15
发表期刊Science of the Total Environment
卷号472页码:1121-1129
文章类型期刊论文
摘要

Elemental profiles were determined for size-separated fugitive dust particles produced from Chinese desert and gobi soils. Seventeen surface soil samples from six Chinese deserts were collected, composited, resuspended, and sampled through TSP, PM10, and PM2.5 inlets onto Teflon® filters, which were analyzed for twenty-six elements. Two major dust sources could be distinguished based on differences in crustal and enriched elements-the northwestern (NW) region (Taklimakan Desert, Xinjiang Gobi, and Anxinan Gobi) and northern (N) region (Ulan Buh Desert, Central Inner Mongolia Desert, and Erenhot Gobi). The N sources showed lower concentrations of mineral elements (Fe, K, Na, Ti, Mn, Cr, and Rb in PM10, and Fe, K, Ti, Mn, Co, and V in PM2.5) and higher levels of contaminants (S, Zn, Mo, Cu, Cr, Pb, Cd, and As) than the NW ones, especially in PM2.5. Enrichment factors for Cu, Cr, Zn, Pb, As, Mo, and Cd calculated relative to the upper continental crust showed enrichments of one to two orders-of-magnitude, and they were much higher for N sources than NW ones, implying stronger anthropogenic impacts in north China. Aerosol elemental concentrations during dust events at Horqin, Beijing, and Xi'an matched the mass percentages of mineral elements from their presumptive sources better than the alternative ones, validating the differences between the NW and N sources. Additionally, Na/S, Mg/S, Fe/Al, K/Al, Si/Fe, and Na/Al ratios were suggested to differentiate the two dust source regions. The elemental ratios of Ca/Al, K/Al, Fe/Al, and Ti/Fe in the source regions matched those in aerosols collected downwind, and they can be considered as possible source indicators.

关键词Elemental Profiles Chinese Deserts Asian Dust Source Signatures
DOI10.1016/j.scitotenv.2013.11.011
收录类别SCI ; EI
语种英语
引用统计
被引频次:12[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/9852
专题粉尘与环境研究室
通讯作者Cao, JJ (Cao, Junji)[ 1 ]
作者单位1.State Key Laboratory of Loess and Quaternary Geology (SKLLQG), Institute of Earth Environment (IEE), Chinese Academy of Sciences, No. 10 Fenghui South Rd., High-Tech Zone, Xi'an 710075, China;
2.Department of Environmental Science and Engineering, Xi'an Jiaotong University, No. 28 Xianning West Rd., Xi'an 710049, China;
3.Hubei Polytechnic University, No. 16 Guilin North Rd., Huangshi 435003, China
推荐引用方式
GB/T 7714
Zhang, R ,Cao, JJ ,Tang, YR ,et al. Elemental profiles and signatures of fugitive dusts from Chinese deserts[J]. Science of the Total Environment,2014,472:1121-1129.
APA Zhang, R .,Cao, JJ .,Tang, YR .,Arimoto, R .,Shen, ZX .,...&Li, GH .(2014).Elemental profiles and signatures of fugitive dusts from Chinese deserts.Science of the Total Environment,472,1121-1129.
MLA Zhang, R ,et al."Elemental profiles and signatures of fugitive dusts from Chinese deserts".Science of the Total Environment 472(2014):1121-1129.
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