Articles | Volume 21, issue 19
https://doi.org/10.5194/acp-21-15239-2021
https://doi.org/10.5194/acp-21-15239-2021
Research article
 | 
13 Oct 2021
Research article |  | 13 Oct 2021

Characterization of ambient volatile organic compounds, source apportionment, and the ozone–NOx–VOC sensitivities in a heavily polluted megacity of central China: effect of sporting events and emission reductions

Shijie Yu, Fangcheng Su, Shasha Yin, Shenbo Wang, Ruixin Xu, Bing He, Xiangge Fan, Minghao Yuan, and Ruiqin Zhang

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Cited articles

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Bai, L., Lu, X., Yin, S., Zhang, H., Ma, S., Wang, C., Li, Y., and Zhang, R.: A recent emission inventory of multiple air pollutant, PM2.5 chemical species and its spatial-temporal characteristics in central China, J. Clean. Prod., 269, 112–114, 2020. 
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Bressi, M., Sciare, J., Ghersi, V., Mihalopoulos, N., Petit, J.-E., Nicolas, J. B., Moukhtar, S., Rosso, A., Féron, A., Bonnaire, N., Poulakis, E., and Theodosi, C.: Sources and geographical origins of fine aerosols in Paris (France), Atmos. Chem. Phys., 14, 8813–8839, https://doi.org/10.5194/acp-14-8813-2014, 2014. 
Brito, J., Wurm, F., Serrano, A., Assuno, J., Artaxo, P., Godoy, J., and Artaxo, P.: Vehicular Emission Ratios of VOCs in a Megacity Impacted by Extensive Ethanol Use: Results of Ambient Measurements in Sao Paulo, Brazil, Environ. Sci. Technol., 49, 11381, https://doi.org/10.1021/acs.est.5b03281, 2015. 
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This study measured 106 VOC species using a GC-MS/FID. Meanwhile, the WRF-CMAQ model was used to investigate the nonlinearity of the O3 response to precursor reductions. This study highlights the effectiveness of stringent emission controls in relation to solvent utilization and coal combustion. However, unreasonable emission reduction may aggravate ozone pollution during control periods. It is suggested that emission-reduction ratios of the precursors (VOC : NOx) should be more than 2.
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