Sources Analysis of Heavy Metal Aerosol Particles in North Suburb of Nanjing
(2.Key Laboratory for Aerosol-Cloud-Precipition of China Meteorological Administration, Nanjing University of Information Science and Technology, Nanjing, China 210044)
【Abstract】Heavy metal aerosol particles were first measured with Single Particle Aerosol Mass Spectrometry (SPAMS) in north suburb of Nanjing from January to December, 2013. Using the ART-2a neural network algorithm, we studied the chemical characteristics of aerosol particles and found that the main sources of heavy metal aerosols in Nanjing were industrial emissions, biomass combustion, traffic emissions, fuel combustion and mineral dust, accounting for 35.7%, 34.45%, 13.6%, 11.03% and 4.07%, respectively. Pb, Cd and Cr containing aerosols mainly came from industrial emissions. Cu, Co and Hg-containing aerosols mainly came from biomass burning. V, Zn and Ba-containing aerosols mainly came from traffic emissions. As and Ni-containing aerosols mainly came from fuel combustion.
【Keywords】 heavy metal aerosols; source apportionment; SPAMS; Nanjing;
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