Research on the pollution characteristics and source apportionment of particulates in the coastal cities of Zhejiang province

This research monitored the ambient air quality in Ningbo and Wenzhou during the summer of 2009,including the particulates concentration(TSP,PM10,PM2.5,PM1.0).This article analyzed the pollution characteristics,water-soluble ion and inorganic elements composition of atmospheric particulates,CMB model was used to study the source apportionment of TSP.The results indicated the proportion of the fine particulate was quite high,and SO2-4,NH+4,Ca2+ were the main water-soluble ion in atmospheric particulates.Soil dust was the principal source of particulates in the coastal cities of Zhejiang province,its contribution to TSP of Beilun site,Yueqing site and Fenghua site were 55.49%,42.52%,40.70% respectively.The source distribution of TSP in different sites showed spatial diversity.