Modeling and evaluation of size-dependent behavior of indoor ultrafine particles and fine particles

摘要

Levels of indoor participate matter have been observed to correlate with human health. This study aims at evaluating number-weigted size distributions of indoor ultrafine/fine particles. Airbourne particles of indoors and outdoors were measured with OPC and SMPS in 3 offices. In order to clarify the indoor emission rates of particles from office automation equipments and human bodies were measured by the chamber experiments. Indoor and outdoor particle concentration were estimated by time-dependent mass balance model. As a result, the model explained that indoor particles were effected by particle of outdoor origin and indoor paticle emission.