AIRBORNE LEAD POLLUTION IN METROPOLITAN TAIPEI (REPUBLIC-OF-CHINA)

To examine the spatial variation of airborne lead in Taipei, a field s tudy was conducted during the summer and fall of 1991. Samples were co llected 2-4 times daily at several sites for the determination of airb orne lead. Results indicate that the average of air lead concentration of Taipei city is 0.70 +/- 0.39 mu g/m(3), and eighty-eight percent o f particles are smaller than 10 mu m. From high to low polluted area, the fine particle concentrations are 0.83, 0.51, 0.29 mu g/m(3). The l ead concentration of particulates <10 mu m on 2nd, 7th, and 14th floor s of a building are 0.75, 0.60, 0.55 mu g/m(3), and appears to be litt le difference among vertical dispersions. The air lead concentrations (da <10 mu m) on roadside, side walk and covered walk way from the veh icle emission source of a main road are 0.83, 0.78, 0.87 mu g/m(3), th e highest is on the covered walk way. For lead concentrations (da <10 mu m) on the main street, side street and alley of an area are 0.34, 0 .37, 0.35 mu g/m(3); the result indicates lead concentrations on these pathways are not significantly different.