摘要
通过使用气相色谱/质谱仪(GC/MS)对比分析了汽油和柴油、汽油车和柴油车排放尾气以及天津市环境空气中主要挥发性有机污染物(VOCs)的组成种类及比例。机动车排放的尾气中主要的有机污染物为芳香烃类、烷烃类和烯烃类化合物,其中芳香烃类的污染最严重,汽油车排放的芳香烃类化合物浓度要高于柴油车排放的浓度,机动车尾气对交通区域的影响明显高于工厂区、生活小区和公园。苯的最高浓度达12.6μg/m3,甲苯达22.7μg/m3,乙苯达6.53μg/m3,二甲苯达22.1μg/m3。
The main volatile organic compounds in Tianjin ambient air,gasoline,diesel,and vehicle exhaust were qualitatively and quantitatively studied with GC/MS,and the ingredients and their concentration were compared.Aromatic hydrocarbons,alkane and alkene were the main compounds in fuels and also in exhausted pollutants from vehicles.Aromatic hydrocarbons took the most parts of gasoline,while the alkane took the most parts of diesel.These pollutants,especially aromatic hydrocarbons had become the main volatile organic pollutants in Tianjin ambient air.The pollution in traffic area was the most serious.The concentration of benzene reached to 12.6 μg/m3,toluene 22.7 μg/m3,ethylbenzene 6.53 μg/m3 and xylene 22.1 μg/m3.
出处
《城市环境与城市生态》
CAS
CSCD
2007年第5期14-16,19,共4页
Urban Environment & Urban Ecology
