上海市交通干线空气中挥发性有机物组成及变化规律研究

Study on the Composition and Changing of Volatile Organic Compounds in Air of Arterial Traffic in Shanghai

对上海市交通干道附近空气中的挥发性有机物进行了连续6 d监测,利用浓缩进样和GC/MS分析技术对样品中浓度较大的苯等7种典型物质进行了定性定量分析和讨论。得出汽车尾气是交通干线空气中挥发性有机物的主要来源,且有机物浓度与车流量成正比,与气象条件关系密切。

Volatile organic compounds（VOCs） in ambient air near arterial traffic roads were monitored continuously for six days in Shanghai.They were cryo-concentrated prior to analysis by GC-MS.Seven compounds were determined and analyzed qualitativly and quantificationally in the samples.Automobile exhaust gases are the main reason of arterial traffic VOC pollution,and the pollution is proportional to degree of heavy traffic and related to meteorologic condition closely.