Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/43381
Title: Anthropogenic and biogenic organic compounds in summertime fine aerosols (PM2.5) in Beijing, China
Authors: Yang, F
Kawamura, K
Chen, J
Ho, K
Lee, S 
Gao, Y
Cui, L
Wang, T
Fu, P
Keywords: 2-Methyltetrols
Biomass burning
Levoglucosan
Phthalates
Secondary organic aerosol
Issue Date: 2016
Publisher: Pergamon Press
Source: Atmospheric environment, 2016, v. 124, p. 166-175 How to cite?
Journal: Atmospheric environment 
Abstract: Ambient fine aerosol samples (PM2.5) were collected at an urban site (PKU) in Beijing and its upwind suburban site (Yufa) during the CAREBEIJING-2007 field campaign. Organic molecular compositions of the PM2.5 samples were studied for seven organic compound classes (sugars, lignin/resin acids, hydroxy-/polyacids, aromatic acids, biogenic SOA tracers, fatty acids and phthalates) using capillary GC/MS to better understand the characteristics and sources of organic aerosol pollution in Beijing. More than 60 individual organic species were detected in PM2.5 and were grouped into different compound classes based on their functional groups. Concentrations of total quantified organics at Yufa (469-1410 ng m-3, average 1050 ng m-3) were slightly higher than those at PKU (523-1390 ng m-3, 900 ng m-3). At both sites, phthalates were found as the most abundant compound class. Using a tracer-based method, the contributions of the biogenic secondary organic carbon (SOC) to organic carbon (OC) were 3.1% at PKU and 5.5% at Yufa, among which isoprene-SOC was the dominant contributor. In addition, most of the measured organic compounds were higher at Yufa than those at PKU, indicating a more serious pollution in its upwind region than in urban Beijing.
URI: http://hdl.handle.net/10397/43381
ISSN: 1352-2310
EISSN: 1873-2844
DOI: 10.1016/j.atmosenv.2015.08.095
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