Analysis of an Ozone Pollution Process in Zhongshan
A continuous ozone(O3)pollution process occurred in Zhongshan City from April 4 to 8,2022,with moderate pollution on April 6.During the pollution period,the ozone precursors volatile organic compounds(VOCs)and NO2 are significantly increased,"photochemical fuel"is sufficient.The intensity of solar radiation also higher than the clean period,which intensifies the photochemical reaction,and O3 is mainly generated locally.The diurnal variation of O3,NO2 and VOCs during the pollution period and the clean period showed a similar trend,and the O3,NO2 and VOC on the pollution day were higher than those on the non-pollution day,while the O3 showed an afternoon peak and the VOC and NO2 showed a bimodal distribution.According to the analysis of active species,the species with the highest O3 generating potential are tolu-ene,olefin and n-butane,which mainly come from industrial solvents,motor vehicle exhaust and plant emissions.The pollution in Zhongshan City is mainly caused by the rise of precursors and adverse meteorological conditions,and the main active species come from the solvent source,so under adverse meteorological conditions,it is necessary to warn in advance and do a good job of VOCs control.
ozonevolatile organic compoundsozone formation potentialpollution process
万方数据
维普
