Abstract
Total suspended particle samples and gas phase samples were collected at three representative sampling sites in the southeastern suburb of Beijing from March 2005 to January 2006. The samples were analyzed for 16 US EPA priority PAHs using GC/MS. Concentrations of ∑PAHs in particle and gas phases were 0.21–1.18 × 103 ng m−3 and 9.5 × 102 ng–1.03 × 105 ng m−3, respectively. PAH concentrations displayed seasonal variation in the order of winter>spring>autumn>summer for particle phase, and winter>autumn>summer>spring for gas phase. Partial correlation analysis indicates that PAH concentrations in particle phase are negatively correlated with temperature and positively correlated with air pollution index of SO2. No significant correlation is observed between gas phase PAHs and the auxiliary parameters. Sources of PAH are identified through principal component analysis, and source contributions are estimated through multiple linear regression. Major sources of atmospheric PAHs in the study area include coal combustion, coke industry, vehicular emission and natural gas combustion.
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Zhang, S., Zhang, W., Wang, K. et al. Concentration, distribution and source apportionment of atmospheric polycyclic aromatic hydrocarbons in the southeast suburb of Beijing, China. Environ Monit Assess 151, 197–207 (2009). https://doi.org/10.1007/s10661-008-0261-2
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DOI: https://doi.org/10.1007/s10661-008-0261-2