Comparison of PM2.5 carbonaceous pollutants between an urban site in Shanghai and a background site in a coastal East China Sea island in summer: concentration, composition and sources
作者： Fengwen Wang , Tian Lin , Yuanyuan Li , Zhigang Guo , Neil L. Rose
DOI: 10.1039/C7EM00129K
关键词:
摘要: Nine paired samples of atmospheric particulate matter with an aerodynamic diameter less than or equal to 2.5 μm (PM2.5) were collected concurrently from urban site in Shanghai, China and a background Huaniao Island (HNI) the coastal East Sea (ECS) between July 21 29, 2011. The analyzed for 16 United States Environmental Protection Agency (USEPA) priority polycyclic aromatic hydrocarbons (PAHs), n-alkanes (20 species, C14-C33), hopanes (10 C29-C32), steranes (12 C27-C29). These two sites, approximately 66 km apart, are both on pathway land-based pollutants as they transported ECS by seasonal winds. As expected, concentrations Shanghai higher (average: 8.4 67.8 ng m-3 PAHs n-alkanes, respectively) those HNI 1.8 8.5 m-3, respectively). dominant contributor was 5-6-ring (60.0%), whereas 2-3-ring contributed most (72.5%) HNI. Plant waxes 45.7% 25.9% HNI, respectively, implying relatively greater contribution petroleum residues Principal component analysis (PCA) compositions highlighted prominent traffic emissions carbonaceous PM2.5 aerosols. This study provides comprehensive details about sources, formation, transport eastern ECS.
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gyig.ac.cn参考文章(43)
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