摘要
利用VOCs在线监测和空气站数据,分析了典型污染过程NOX、O3浓度变化及VOCs浓度、组分变化特征。结果表明:VOCs前期浓度较低,中后期上升;不同阶段均以烷烃、芳香烃和卤代烃为主,占67.1%~75.2%,中心城区受机动车尾气和有机溶剂挥发等影响;芳香烃、烷烃、天然源(异戊二烯)是OFP主要贡献种类,占76.8%~79.9%;OFP贡献主要物种是异戊二烯、间-对二甲苯、甲苯、己醛、正丁烷等,主要来源于植物排放、有机溶剂挥发和机动车排放等。
Online monitoring system for volatile organic compounds(VOCs)and conventional air stations were used to monitor the typical pollution process.The results showed that the concentration of VOCs was low in early stage,while the concentration increased in middle and late stages.Alkanes,aromatic hydrocarbons and halogenated hydrocarbons,accounting for 67.1%~75.2%,were the main components.The atmosphere of central downtown affected not only by vehicle exhaust,but also by other VOCs emission sources,such as volatile organic solvents.Aromatic hydrocarbons,alkanes,natural source(isoprene)were the main contribution to the species of ozone formation potential in central downtown,accounting for 76.8%~79.9%.The main contribution of species to OFP were isoprene,m/p-xylene,toluene,hexanal,n-butane,n-butane,mainly derived from plants emissions,volatile organic solvents and motor vehicle exhaust emission.
作者
张坤龙
ZHANG Kun-long(Zhangzhou Environmental Monitoring station,Fujian Zhangzhou 363000,China)
出处
《广州化工》
CAS
2018年第13期94-97,112,共5页
GuangZhou Chemical Industry
关键词
VOCs在线监测
典型污染
浓度和组分变化特征
OFP贡献主要物种
online monitoring system for volatile organic compounds(VOCs)
typical pollution process
variation characteristics of concentration and component
rich species of ozone formation potential
