摘要
机动车排放的气态与颗粒态污染物是大气污染的重要来源。其中有机碳(OC,organic carbon)和元素碳(EC,elemental carbon)为机动车PM2.5中的重要组成。由于机动车排放较多半挥发性有机物(SVOC,semi-volatile organic carbon),导致路边环境OC正负偏差均较高。同时机动车排放SVOC与快速挥发有机物(IVOC,intermediate volatile organic compounds)为二次有机气溶胶(SOA,secondary organic aerosol)的快速生成的前体物,可能会造成SOA的增长,是路边环境中含碳气溶胶不可忽略的部分。
Gaseous and particulate pollutants emitted by motor vehicles are an important source of air pollution.Among them,organic carbon(OC)and elemental carbon(EC)are important components in automotive PM2.5.Since the motor vehicle emits more semi-volatile organic carbon(SVOC),the positive and negative OC deviations of the roadside environment are high.At the same time,SVOC and intermediate volatile organic compounds(IVOC)are rapidly generated precursors of secondary organic aerosol(SOA),which may cause SOA growth and are in the roadside environment.A non-negligible part of a carbonaceous aerosol.
作者
张洁
Zhang Jie(Jiangsu Academy of Environmental Sciences,Nanjing Jiangsu 210036,China;Jiangsu Key Laboratory of Environmental Engineering,Nanjing Jiangsu 210036,China)
出处
《环境与发展》
2018年第12期75-76,共2页
Environment & Development
基金
国家重点研发计划项目(2016YFC0201502)
江苏省科技支撑计划(BE2014724)
