Particle size distribution and anion content at a traffic site in Sha-Lu, Taiwan Original Research Article

Ambient air particle concentrations were sampled by two total suspended particle (TSP) samplers, PM10/PM2.5 specific sampler and micro-orifice uniform deposit impactor (MOUDI) during July–October 2000 at a traffic sampling site in central Taiwan. The average TSP concentration (194 μg/m3) was about a factor of two higher than that of the fraction <2.5 μm (93.2 μg/m3). The mean level of the fraction <10 μm collected by MOUDI (93.2 μg/m3) was about 1