Articles | Volume 20, issue 8
https://doi.org/10.5194/acp-20-4593-2020
https://doi.org/10.5194/acp-20-4593-2020
Research article
 | 
21 Apr 2020
Research article |  | 21 Apr 2020

The evolutionary behavior of chromophoric brown carbon during ozone aging of fine particles from biomass burning

Xingjun Fan, Tao Cao, Xufang Yu, Yan Wang, Xin Xiao, Feiyue Li, Yue Xie, Wenchao Ji, Jianzhong Song, and Ping'an Peng

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Andreae, M. O. and Gelencsér, A.: Black carbon or brown carbon? The nature of light-absorbing carbonaceous aerosols, Atmos. Chem. Phys., 6, 3131–3148, https://doi.org/10.5194/acp-6-3131-2006, 2006. 
Arhami, M., Kuhn, T., Fine, P. M., Delfino, R. J., and Sioutas, C.: Effects of Sampling Artifacts and Operating Parameters on the Performance of a Semicontinuous Particulate Elemental Carbon/Organic Carbon Monitor, Environ. Sci. Technol., 40, 945–954, https://doi.org/10.1021/es0510313, 2006. 
Baduel, C., Monge, M. E., Voisin, D., Jaffrezo, J. L., George, C., Haddad, I. E., Marchand, N., and D'Anna, B.: Oxidation of atmospheric humic like substances by ozone: a kinetic and structural analysis approach, Environ. Sci. Technol., 45, 5238–5244, https://doi.org/10.1021/es200587z, 2011. 
Bond, T. C.: A technology-based global inventory of black and organic carbon emissions from combustion, J. Geophys. Res., 109, D14203, https://doi.org/10.1029/2003jd003697, 2004. 
Chang, J. L. and Thompson, J. E.: Characterization of colored products formed during irradiation of aqueous solutions containing H2O2 and phenolic compounds, Atmos. Environ., 44, 541–551, https://doi.org/10.1016/j.atmosenv.2009.10.042, 2010. 
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Short summary
A particle-phase O3 oxidation of biomass burning (BB) smoke particles was conducted to investigate the evolution of brown carbon (BrC) therein. The O3 aging induced the decomposition of chromophores and fluorophores. EEM–PARAFAC showed a predominant decomposition of protein-like substances and a gradual increase proportion of humic-like substances for BB BrC during O3 aging. The dynamic spectral behavior of chromophores and functional groups within BrC was further explored by 2D-COS.
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