Size Distributions of Suspended Fine Particles During Cleaning in an Office

摘要

In this study, the concentration and size distribution of fine dust particles were analyzed by measuring the dust in air generated during the cleaning of an indoor office. We measured the PM_(10), PM_(2.5), and PM_(1.0) and analyzed the size distributions of particles larger than 0.3 μm in diameter during cleaning. The results showed that the concentration of PM_(10) increased rapidly during cleaning, whereas the PM_(1.0) did not increase. Prior to sweeping the floor with a broom, the fine dust concentration was ~50 μg m~(–3), but it increased to ~400 μg m~(–3) as the sweeping progressed. When a vacuum cleaner was used, the concentration of PM_(10) increased, but the increase in PM_(2.5) was relatively small. As in the case of sweeping, the PM_(1.0) did not increase while vacuuming.