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Chemical Composition and Origin of a Duststorm over Beijing
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摘要: 讨论了1990年4月25日北京地区出现的一次强尘暴过程的气溶胶特征，探讨了尘暴的来源，从对形成尘暴的气象背景以及尘暴气溶胶中元素资料和稀土元素分布模式的分析，认为该次尘暴气溶胶主要是由形成大风地区及其途经地区的尘土微粒混合组成的。Abstract: In this paper, the origin of aerosol particle for a severe duststorm process, which occurred in the period of 25—26 April 1990 over Beijing, is discussed based on the analyses of the weather situation concerning the duststorm and data of the chemical elements, as well as the rare-earth element distribution of the aerosol particles collected in Beijing. The results show that the aerosol particles of the duststorm was made of the sand soil originated from the areas where the strong wind was appeared
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