Articles | Volume 17, issue 2
Atmos. Chem. Phys., 17, 981–992, 2017
https://doi.org/10.5194/acp-17-981-2017

Special issue: Regional transport and transformation of air pollution in...

Atmos. Chem. Phys., 17, 981–992, 2017
https://doi.org/10.5194/acp-17-981-2017

Research article 23 Jan 2017

Research article | 23 Jan 2017

Concentrations and stable carbon isotope compositions of oxalic acid and related SOA in Beijing before, during, and after the 2014 APEC

Jiayuan Wang et al.

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Cited articles

Beijing Municipal Bureau of Statistics: available at: http://www.bjstats.gov.cn/tjsj/yjdsj/rk/2014/201511/t20151124_323864.html, 2015.
Bikkina, S., Kawamura, K., and Miyazaki, Y.: Latitudinal distributions of atmospheric dicarboxylic acids, oxocarboxylic acids, and α-dicarbonyls over the western North Pacific: Sources and formation pathways, J. Geophys. Res.-Atmos., 120, 5010–5035, https://doi.org/10.1002/2014jd022235, 2015.
Carlton, A. G., Turpin, B. J., Lim, H.-J., Altieri, K. E., and Seitzinger, S.: Link between isoprene and secondary organic aerosol (SOA): Pyruvic acid oxidation yields low volatility organic acids in clouds, Geophys. Res. Lett., 33, L06822, https://doi.org/10.1029/2005gl025374, 2006.
Carlton, A. G., Turpin, B. J., Altieri, K. E., Seitzinger, S., Reff, A., Lim, H.-J., and Ervens, B.: Atmospheric oxalic acid and SOA production from glyoxal: Results of aqueous photooxidation experiments, Atmos. Environ., 41, 7588–7602, https://doi.org/10.1016/j.atmosenv.2007.05.035, 2007.
Carlton, A. G., Wiedinmyer, C., and Kroll, J. H.: A review of Secondary Organic Aerosol (SOA) formation from isoprene, Atmos. Chem. Phys., 9, 4987–5005, https://doi.org/10.5194/acp-9-4987-2009, 2009.
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We compared the differences in concentrations of oxalic acid and related SOA and the stable carbon isotopic compositions of oxalic acid Beijing before, during and after the APEC 2014 conference, to investigate the impact of pollutant emission controls on the origins and formation mechanisms of PM2.5. Our results indicate that the significant reduction in PM2.5 during APEC is firstly due to the emission control and secondly attributed to the relatively colder and drier conditions.
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