Study on Benzene, Toluene, Xylene Pollution Resulted From Vehicle Emission by Tenax TA Adsorption,Thermal Desorption,Capillary Gas Chromatography

Objective To investigate benzene, toluene, xylene(BTX) pollution resulted from vehicle emission. Methods Concentration of BTX in ambient air at traffic intersection and personal exposure were monitored by Tenax TA adsorption,thermal desorption,capillary gas chromatography. Results The concentration range of benzene, toluene, xylene at traffic intersection is 0.041-0.276 mg/m3, 0.002-0.132 mg/m3, 0.008-0.091 mg/m3 respectively. Conclusion The concentration of BTX is higher when traffic jammed. The personal exposure to BTX for bicycle rider is higher than the concentration of the traffic intersection. Wind or rain could reduce the concentration of air pollutants.