PM10-Bound Polycyclic aromatic hydrocarbons in the aerosols of Xiamen-Kinmen area, China
X.H. Wang, J.M. Yan, S.P. Wu, C.S. Yuan, H.S. Hong
Xiamen University, CN
Keywords: PAHs, PM10, aerosol, Xiamen, Kinmen
Abstract:Xiamen and Kinmen are located along the southeastern shore of China. To study the characteristics of polycyclic aromatic hydrocarbons (PAHs) bound to aerosol and clarify their sources (marine sources, emissions from urban city), PM10 samples along seaside area from five sites in Xiamen and three sites in kinmen were collected during March 2008 to March 2009. The results showed that there were similar trends of PAH composition and concentration in these two areas. Higher concentrations were occurred in winter and followed with autumn, spring and summer. However, the PAH composition profiles were different in seasonal variations. Four-, five-rings PAHs were dominate (>80%) in winter and autumn aerosols, while five-, six-rings PAHs were dominate (>80%) in summer and spring aerosols. There were linear relationships between PAHs and EC and OC (R2=0.5735, 0.5246 respectively). Hu-Li station, which was located in the center of the city with heavy traffic and more industrial factories, was the most serious polluted site with PAHs in the urban area of Xiamen island (3.15--67.28 ug/m3). Combined with composition, concentration and distribution of PAHs in this area, emission from automobiles and industry were the two main pollution sources in Xiamen and Kinmen cities.