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Atmospheric Chemistry and Physics An interactive open-access journal of the European Geosciences Union
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Volume 14, issue 8
Atmos. Chem. Phys., 14, 4185–4199, 2014
© Author(s) 2014. This work is distributed under
the Creative Commons Attribution 3.0 License.
Atmos. Chem. Phys., 14, 4185–4199, 2014
© Author(s) 2014. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 25 Apr 2014

Research article | 25 Apr 2014

Aircraft measurements of polar organic tracer compounds in tropospheric particles (PM10) over central China

P. Q. Fu1,2, K. Kawamura2, Y. F. Cheng3, S. Hatakeyama4, A. Takami5, H. Li6, and W. Wang7,† P. Q. Fu et al.
  • 1LAPC, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China
  • 2Institute of Low Temperature Science, Hokkaido University, Sapporo 060-0819, Japan
  • 3Multiphase Chemistry Department, Max Plank Institute for Chemistry, Mainz 55128, Germany
  • 4Institute of Symbiotic Science and Technology, Tokyo University of Agriculture and Technology, Fuchu, Tokyo 183-8509, Japan
  • 5National Institute for Environment Studies, Tsukuba, Ibaraki 305-8506, Japan
  • 6State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
  • 7Chinese Research Academy of Environmental Sciences, Beijing 100012, China
  • deceased

Abstract. Atmospheric aerosol samples were collected by aircraft at low to middle altitudes (0.8–3.5 km a.g.l.) over central East to West China during summer 2003 and spring 2004. The samples were analyzed for polar organic compounds using a technique of solvent extraction/BSTFA derivatization/gas chromatography–mass spectrometry. Biogenic secondary organic aerosol (SOA) tracers from the oxidation of isoprene were found to be more abundant in summer (3.3–138 ng m−3, mean 39 ng m−3) than in spring (3.2–42 ng m−3, 15 ng m−3), while α/β-pinene and β-caryophyllene SOA tracers showed similar abundances between these two seasons. A strong positive correlation (R2 = 0.83) between levoglucosan and β-caryophyllinic acid was found in the spring samples vs. a weak correlation (R2 = 0.17) in the summer samples, implying substantial contributions from biomass burning to the β-caryophyllinic acid production in spring. Two organic nitrogen species (oxamic acid and carbamide) were detected in the aircraft aerosol samples, and their concentrations were comparable to those of biogenic SOA tracers. Most of the primary organic aerosol (POA) and SOA tracers were less abundant at higher altitudes, suggesting they are of ground surface origin, either being directly emitted from anthropogenic/natural sources on the ground surface, or rapidly formed through photooxidation of their precursors emitted from the ground surface and then diluted during uplifting into the troposphere. This study demonstrates that primary biological aerosols, biogenic SOA, and organic nitrogen species are important components of organic aerosols in the troposphere over central China during warm seasons.

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