Elemental profiles and signatures of fugitive dusts from Chinese deserts

The Science of the Total Environment
Rong ZhangGuohui Li

Abstract

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 miner...Continue Reading

References

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Nov 20, 2012·Journal of the Air & Waste Management Association·Jun-Ji CaoYong-Ming Han
May 11, 2013·Science·Daniel J CziczoDaniel M Murphy

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Citations

Oct 19, 2016·Environmental Science and Pollution Research International·Laura MegidoElena Marañón
Apr 3, 2019·International Journal of Environmental Research and Public Health·Yi YangQiangqiang Yuan
Sep 6, 2018·The Science of the Total Environment·Jian SunRenjian Zhang
Aug 29, 2020·The Science of the Total Environment·Chunqiang ChenXiaohuan Liu

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