THE PHYSICAL AND CHEMICAL FEATURES OF WATER-SOLUABLE COMPOSITION OF GRADED AEROSOLS IN THE SURFACE-LAYER OVER HUANGPU INDUSTRIAL AREA IN GUANGZHOU

Being analysed of mass spectrum and water-soluableion composition spectrum of aerosol samples collected at Huangpu industrial aera, it is shown that the to talaerosol mass and ion density are obviously higher than those of inland station in South China, their distributions show at hree-peak pattern obviously, the mainion compositions in aerosol are SO4-2, NO3-, Ca2+, NH4+. Compared with the inland observation station in South China, besides the double increase of ions density, the density of SO4-2 accounts for the large part of the negativeions, the contents of NO3- and NH4+ increase greatly, and the main features are that NO3-, SO4-2, NH4+ and K+ exist mainly in mini-particles.