Variation of PM2.5 concentration at some typical districts in Chengdu

Aerosol particles are one of the most variable components in the Earth's atmosphere. The study of aerosol properties plays an important role in science and application. The PM2.5 concentration at different locations in Chengdu city is studied in this paper. In order to measure the PM2.5 concentration at different locations in Chengdu city, three areas including the commercial district, the university area and the overpass in the main road are choose to represent the typical locations. The variation of PM2.5 concentration with time at different locations and different dates are tested with the particle instrument. According to these results, it is obvious to understand that the PM2.5 concentration is different at different location even within the same time. If with the conditions of rainfall and wind, the PM2.5 concentration will be reduced rapidly. (paper)