Traffic-related exposure to benzene and toluene
by Pei-Ling Leung, Roy M. Harrison
International Journal of Vehicle Design (IJVD), Vol. 20, No. 1/2/3/4, 1998

Abstract: Monoaromatic hydrocarbon concentrations were measured within moving vehicles and at a fixed point on the road. Pedestrian exposure to these aromatics was also assessed by sampling along busy roads at heights of 1 m and 1.5 m. A comparison of in-vehicle and out-of-vehicle concentrations showed little difference, which indicated that the main source of in-vehicle pollution was the surrounding vehicle emissions. Roadside and in-vehicle and out-of-vehicle concentrations were typically several times higher (in congested roads) than those measured at a background monitoring station based in a suburban region of Birmingham (Ward End). Pedestrian exposure was also greater than background concentrations. Concentrations were greater at a height of 1 m than at 1.5 m, owing to the closer proximity of vehicle exhaust pipes, but only by a factor of 1.21 for benzene and 1.19 for toluene.

Online publication date: Mon, 18-Aug-2003

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