Abstract:Ambient pollens and atmospheric particulates samples were collected in different regions of Shanghai in spring, autumn and winter from 2009 to 2010 by Pierre Cour pollen samplers. Distribution of ambient pollens at different heights were investigated by using of Durham pollen samplers in spring (April, 2010), additionally, we collected Platanus grains in different regions. The pollens collected by Pierre Cour pollen samplers were identified by light microscope after the samples were treated with acids, while the pollens collected by Durham pollen samplers were observed after the pollens were stained. Microscopic morphologies of PM which adsorbed on Platanus grains were obtained by using SEM. Our results showed that woody plant pollens were the dominant airborne pollens during spring. Pollutant characters absorbed on Platanus grains which were sampled in different regions were different. The ion chromatography results showed that the concentration of SO42- was highest in the detected ions, including Na+, K+, Ca2+, Mg2+, NH4+, NO3-, SO42- and Cl-. The concentrations of NO3-, SO42-, NH4+ were higher in winter than that in spring. Elemental analysis using ICP-AES indicated that mass concentrations of crustal elements in Shanghai PM were in the order of Ca> Na> Mg> K.