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JOURNAL OF DESERT RESEARCH  2009, Vol. 29 Issue (1): 156-161    DOI:
天气与气候     
Analysis of Atmospheric Dust Composition and Its Influence in Hexi Corridor, Gansu
JIA Xiao-peng,WANG Hai-bing
Key Laboratory of Desert and Desertification, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences; Linze Inland River Basin Research Station, CERN, Lanzhou 730000, China
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Abstract  Hexi Corridor is one of areas suffered from the highest frequency of dust storm activities in arid regions of northwest China. The high concentration of air TSP caused by dust storms from Hexi Corridor seriously pollutes cities, air quality. The monitoring data from 1999 to 2001 demonstrated that the annual average air TSP content of cities in Hexi Corridor areas during dust events was 4~8 times as that during non-dust events. Based on the statistic analysis of the characteristics of thirteen representative dust storms, it was demonstrated that these dust events were characterized by ①The duration of these dust events was about 1~3 days;②The dominant wind directions in these dust events was NNW, NW, WNW;③1-hour average maximum wind speeds was about 15.0 m·s-1 and the maximum TSP levels was about 62.53 mg·m-3. The surfaces of dust particles contained mostly crustal element oxides, such as SiO2, Al2O3, Fe2O3, CaO, MgO, K2O, Na2O and TiO2, however, some microelements such as Cu, V, Pb, Zn and As may be contributed to anthropogenic sources such as industrial tailings and some polluted materials.
Key words:  sand-dust      TSP      Hexi Corridor      crustal elements      industrial tailings     
Received:  05 February 2008      Published:  20 January 2009
ZTFLH:  P445.4  
Articles by authors
JIA Xiao-peng
WANG Hai-bing

Cite this article: 

JIA Xiao-peng;WANG Hai-bing. Analysis of Atmospheric Dust Composition and Its Influence in Hexi Corridor, Gansu. JOURNAL OF DESERT RESEARCH, 2009, 29(1): 156-161.

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http://www.desert.ac.cn/EN/     OR     http://www.desert.ac.cn/EN/Y2009/V29/I1/156

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