Characteristics of Ozone and VOCs Pollution in Deyang City during the Universiade in Chengdu
In order to assess the impact of control measures on air quality in Deyang City during the Universiade in Chengdu,an analysis was conducted based on routine monitoring parameters,meteorological factors and online VOCs data.The results show that during the control period of Deyang City,the reduction rate of NO2 is 50.0％;the reduction rates of PM10 and PM2.5 are 45.7％and 42.9％,and the reduction rates of CO and 03-8h are 25.0％and 20.6％,respectively.The control has achieved good results and improved the air quality of Deyang City.The concentration of ozone precursor VOCs was 39.95 × 10-9,lower than before and after control;VOCs analysis re-sults showed that the control effect of the process,fixed combustion source and solvent use was better during the Universiade in Deyang City,and the reduction ratio was more than 50％compared with that before the control.The reduction ratio of mobile source was about 20％,and more reasonable control measures need to be taken for oil and gas volatilization.
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