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http://hdl.handle.net/10397/96018
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 |
Issue Date: | Jan-2016 | Source: | Atmospheric environment, Jan. 2016, v. 124, pt. B, p. 166-175 | 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. | Keywords: | 2-Methyltetrols Biomass burning Levoglucosan Phthalates Secondary organic aerosol |
Publisher: | Pergamon Press | Journal: | Atmospheric environment | ISSN: | 1352-2310 | EISSN: | 1873-2844 | DOI: | 10.1016/j.atmosenv.2015.08.095 | Rights: | © 2015 Elsevier Ltd. All rights reserved. © 2015. This manuscript version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/ The following publication Yang, F., Kawamura, K., Chen, J., Ho, K., Lee, S., Gao, Y., ... & Fu, P. (2016). Anthropogenic and biogenic organic compounds in summertime fine aerosols (PM2. 5) in Beijing, China. Atmospheric Environment, 124, 166-175 is available at https://doi.org/10.1016/j.atmosenv.2015.08.095 |
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