Characteristics of Atmospheric VOCs and Their Effects On Ozone Generation in Jiaxing City
In order to study the characteristics of atmospheric VOCs and their effects on ozone generation in Jiax-ing City,114 VOCs species in the atmosphere in January,April,July and October 2022 were collected;the con-centration and composition characteristics of VOCs were analyzed;and their ozone formation potential(OFP)was estimated.The results showed that the average volume concentration of atmospheric VOCs in Jiaxing city was 38.74X 10-9,and the proportion of OVOCs was the highest.The volume concentration of each component was the highest in winter.The average OPF in Jiaxing city was 256.76 μg/m3,and the OFP of aromatic hydrocarbons was the highest in all seasons.The VOCs species that contributed the most to OFP were toluene,m-p-xylene,ethylene,propylene,acetaldehyde,etc.Reducing vehicle emissions and solvent use is the key to controlling O3 pollution in Jiaxing City.By calculating X/E(volume concentration ratio of m-p-xylene to ethylbenzene)and T/B(volume concentration ratio of toluene to benzene),it is concluded that the air mass has a long-distance transport,and it was more significantly affected by VOCs emission sources such as solvent volatilization.
VOCsozoneozone formation potential(OFP)volume concentrationJiaxing city
NETL
NSTL
万方数据
维普
