Abstract：Atmospheric particulate matter with different diameters (TSP, PM10and PM2.5) were collected during four cruises in Tianjin offshore area in 2006~2007 to analyze mass concentrations, main chemical components including elements, ions and carbon. The sources were analyzed using enrichment factors and ratios. The mass concentrations of TSP, PM10and PM2.5 were (294.98±3.95), (279.87±17.53) and (205.50±38.13)μg/m3, respectively and they represented obviously seasonal variation, with the highest value in autumn, then coming winter and the lowest in summer. The total element concentrations were 48.75, 47.94 and 32.08μg/m3 in TSP, PM10 and PM2.5. The highest ion was Na+ for TSP. The richest ion was Cl- for PM10and for PM2.5. The concentrations of OC for PM were all higher in autumn and winter than in spring and summer. The main source was soil for TSP in spring, but coal combustion translation particles influenced most for PM10and PM2.5in autumn and winter according to the Al/Fe value. Higher EFc values for Cu、Zn and Pb were found with the highest value 741.3 for Pb in PM10in winter. NO3-/SO42- ranged from 0.28to 0.85, with higher values in spring and summer than autumn and winter, which indicated that coal combustion and vehicle emission were both main sources. The variation range of OC/EC in 2.13~5.58indicated the existence of secondary organic carbon in this region.
姬洪亮, 赵宏, 孔少飞, 白志鹏, 韩斌. 天津近岸海域大气颗粒物无机组分季节变化及源析[J]. 中国环境科学, 2011, 31(2): 177-185.
JI Hong-Liang, ZHAO Hong, KONG Shao-Fei, BAI Zhi-Peng, HAN Bin. Seasonal variation of inorganic composition in ambient particulate matter in Tianjin offshore area and its source analysis. CHINA ENVIRONMENTAL SCIENCECE, 2011, 31(2): 177-185.
