Tire-tread and bitumen particle concentrations in aerosol and soil samples

Patrik Fauser, Jens Christian Tjell, Hans Mosbæk, Kim Pilegaard

Research output: Contribution to journalJournal articleResearchpeer-review


ire and bitumen particle concentrations are determined in aerosol and soil samples. They each constitute about 5 wt-% of the total suspended particulate matter (TSP) in inner city air, collected with a Berner low pressure impactor, 5 m from a road. The particle size distribution shows that 92% of the mass of airborne particulate tire debris have aerodynamic diameters smaller than 1 mum. The mean aerodynamic diameter is about I gm for the bitumen particles. This size range enables the possibility for far range transport and inhalation by humans. Soil concentrations in the vicinity of a highway indicate an approximate exponential decrease with increasing distance from the road. Constant values are reached after about 5 m for the tire particles and 10 m for the bitumen particles. Concentrations in soil that has not been touched for at least 30 years show a decrease in tire concentration by a factor of 30 when moving from the top soil to a depth of 3 cm. The bitumen concentration is approximately constant to a depth of 10 cm.
Original languageEnglish
JournalPetroleum Science and Technology
Issue number1-2
Pages (from-to)127-141
Publication statusPublished - 2002

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