Impact on Characteristics and Sources of VOCs in a Typical Petrochemical Industrial Area in Shanghai Around the Spring Festival in 2020
Ambient air concentration of 102 volatile organic compounds(VOCs)species had been determining by online GC-FID/MS(TH-300B)from January 1,2020 to March 31,2020 during the Spring Festival in petrochemical industrial area of Shanghai.Variety of composition and concentration of VOCs,diurnal,chemical reactivity and sources of VOCs during different period were analyzed.The results showed that φ(VOCs)during the Spring Festival was17.1×10-9,which declined 59.0%than that before the Spring Festival.The contribution rate of aromatic and halohydrocarbon which related to solvent use and petrochemical industry decreased significantly,the contribution rate of aromatic decreased from 17.7%to 11.1%,halohydrocarbon decreased from 13.7%to 8.8%.The potential of ozone generation decreased significantly during the Spring Festival.Key active components were ethylene,toluene,propylene,m/p-xylene and n-butane.Toluene/benzene ratio showed that before the Spring Festival,the main sources of VOCs were anthropogenic emissions from petrochemical industrial park,fine chemical industrial parks nearby and motor vehicle exhaust.During the Spring Festival,the impact of emissions of solvent use was significantly weakened,and it was affected by multiple sources such as industrial,motor vehicle exhaust,solvent use and combustion.During the gradual resumption of work,the impact of emissions from fine chemical industrial parks began to increase,but it was still less than level of pre-Spring Festival activities.Comparison and analysis on the effects of petrochemical park control on variation of VOCs concentration and photochemical activity provide scientific support for VOCs emission reduction and control measures.
The Spring FestivalPetrochemical industrial areaVolatile organic compounds(VOCs)Pollution characteristicsPhotochemical reactivitySourcesShanghai
NETL
NSTL
万方数据
