Chemical Composition and Origin of a Duststorm over Beijing

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