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Soil-derived sulfate in atmospheric dust particles at Taklimakan desert
Wu, F (Wu, Feng)[ 1 ]; Zhang, DZ (Zhang, Daizhou)[ 2 ]; Cao, JJ (Cao, Junji)[ 1,3 ]; Xu, HM (Xu, Hongmei)[ 1,4 ]; An, ZS (An, Zhisheng)[ 1 ]
2012-12-19
Source PublicationGEOPHYSICAL RESEARCH LETTERS
Volume39Issue:24Pages: L24803
Subtype期刊论文
Abstract

Dust-associated sulfate is believed to be a key species which can alter the physical and chemical properties of dust particles in the atmosphere. Its occurrence in the particles has usually been considered to be the consequence of particles' aging in the air although it is present in some crustal minerals. Our observation at the north and south edge of Taklimakan desert, one of the largest dust sources in the Northern Hemisphere, during a dust episode in April 2008 revealed that sulfate in atmospheric dust samples most likely originated directly from surface soil. Its TSP, PM10 and PM2.5 content was proportional to samples' mass and comprised steadily about 4% in the differently sized samples, the ratio of elemental sulfur to iron was approximately constant 0.3, and no demonstrable influence of pollutants from fossil fuel combustion and biomass burning was detected. These results suggest that sulfate could be substantially derived from surface soil at the desert area and the lack of awareness of this origin may impede accurate results in any investigation of atmospheric sulfur chemistry associated with Taklimakan dust and its subsequent local, regional and global effects on the atmosphere.

DOI10.1029/2012GL054406
Indexed BySCI
Language英语
Citation statistics
Cited Times:21[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/10119
Collection粉尘与环境研究室
Corresponding AuthorWu, F (Wu, Feng)[ 1 ]
Affiliation1.Key Laboratory of Aerosol, State Key Laboratory of Loess andQuaternary Geology, Institute of Earth Environment, Chinese Academy ofScience, Xi’an, China;
2.Faculty of Environmental and Symbiotic Sciences, PrefecturalUniversity of Kumamoto, Kumamoto, Japan;
3.Institute of Global Environmental Change, Xi’an Jiaotong University,Xi’an, China;
4.Graduate School of Chinese Academy of Sciences, Beijing, China
Recommended Citation
GB/T 7714
Wu, F ,Zhang, DZ ,Cao, JJ ,et al. Soil-derived sulfate in atmospheric dust particles at Taklimakan desert[J]. GEOPHYSICAL RESEARCH LETTERS,2012,39(24): L24803.
APA Wu, F ,Zhang, DZ ,Cao, JJ ,Xu, HM ,&An, ZS .(2012).Soil-derived sulfate in atmospheric dust particles at Taklimakan desert.GEOPHYSICAL RESEARCH LETTERS,39(24), L24803.
MLA Wu, F ,et al."Soil-derived sulfate in atmospheric dust particles at Taklimakan desert".GEOPHYSICAL RESEARCH LETTERS 39.24(2012): L24803.
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