Abstract
As a result of the study on the environmental pollution by benzo[α]pyrene (BP) from asphalt, the following results were obtained. 1) Acidic alumina (1% water) column treatment was effective to remove co-existing interferences in the determination of BP in asphalt, and enabled to determine ng order of BP by high-performance liquid chromatography-fluorescence detection procedure. 2) BP in the environmental air on asphalting road (about 10 cm above and asphalt temp. was about 100°C) ranged 2.12-17.88 ng/m3 (control 0.30-1.50 ng/m3), while BP in asphalt ranged 1.68-5.20μg/g. No correlation was observed between BP in the air and that in asphalt. 3) BP volatilized from asphalt (BP content 10.87μg/g, surface area 95 cm2) depended on asphalt temperature. The amount volatilized in creased exponentially at the temperature more than 200°C.
