New development of indoor ultrafine particle-Emission, behavior and control of secondary organic aerosol

点击翻译按钮获取中文摘要

Secondary organic aerosol(SOA) formation from volatile organic compounds(VOCs) is an important factor of the indoor pollutions. There are many reports about particle for mation by the reaction of d-Limonene and O_3 under UV irradiation. While there are few study about SOA from p-Dichlorobenzene, which is used for a mothball in Japan.In this study, the screening experiments were performed on particle formation from VOCs, especially d-Limonene and p-Dichlorobenzene, without initial O_3 source. And experiment at the real room was performed on exposure to VOCs emitted from housekeeping products under ordinary usage in the residential room air. Particle, NOx and O_3 concentrations in the air were monitored. At the case of experiment with d-Limonene under UV irradiation, particle formation was started when O_3 was generated in the gasbag. In contrast, for experiments with p-Dichlorobenzene(without NOx), particles(<50nm) generated immediately after starting UV irradiation.