Evaluation of adsorbents with passive sampling and their analytical methods to determine volatile organic compounds emitted from vehicular exhaust

In order to accurate and precise determination of Volatile Organic Compounds (VOCs) from vehicular emissions were developed method including a) adsorption of VOCs on different adsorbents followed by thermal desorption and gas chromatography (GC) with flame ionization detector (FID) quantification, b) validation of the sampling and analytical method. The adsorption efficiency of Tenax and Chromosorb 106 adsorbents were eveluated for 104 VOCs to select of adequate sorbent for passive sampling. Since most of the anthropogenic VOCs emitted from urban location are associated with the vehicle experiments were performed near road side. The results obtained showed the both the adsorbents almost same efficieny for selected VOCs emitted from vehicular exhaust. The VOC levels measured in this study were comparable with European cities and lower than Asian cities. The differences of VOC levels measured with different cities are due to traffic composition of the cities and their characteristics of fuel