Chemical characterization of dust in a floating dust event over Beijing

doi:10.7523/j.issn.2095-6134.2007.5.028

›› 2007, Vol. 24 ›› Issue (5): 720-723.DOI: 10.7523/j.issn.2095-6134.2007.5.028

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Chemical characterization of dust in a floating dust event over Beijing

ZHOU Jia-Mao, ZHANG Ren-Jian, SHI Lei, LIU Yang

1 Institute of Earth Environment, Chinese Academy of Sciences, Xi’an 710075, China
2 Institute of Atmospheric Physics, Chinese Academy of Science, Beijing 100029, China
3 Chinese Academy of Sciences, Beijing 100049, China

Received:1900-01-01 Revised:1900-01-01 Online:2007-09-15

Abstract

Abstract: The chemical characteristics of a floating dust event in April 2000 over Beijing were analyzed based on observation data. The total mass concentration of 20 elements in floating dust period was 181.49 μg/m3, which is much smaller than that in dust storm with the same measurement and analysis method, bigger than that in non-dust period in Mar 1999. The size distributions of Al, Fe, K, Ca, Si, Ti, Mn were changed after the passage of floating dust, which may imply a new accumulation of atmospheric particles. The contributions of remote sources to coarse and fine particles in this case were 82.8% and 34.5%, respectively.

Key words: Floating dust, elemental concentration, size distribution, remote sources

CLC Number:

X13161

ZHOU Jia-Mao, ZHANG Ren-Jian, SHI Lei, LIU Yang. Chemical characterization of dust in a floating dust event over Beijing[J]. , 2007, 24(5): 720-723.

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Chemical characterization of dust in a floating dust event over Beijing

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