Characterization of Indoor Secondary Organic Nano-sized Aerosol (ISOA) Formation from Volatile Organic Compounds (VOCs) Derived from House-keeping Wares Using Different Types of Reactor

摘要

Secondary formation of ultrafine particles from volatile organic compounds (VOCs) derived from house-keeping wares has become of serious concern in indoor environments. We refer to these particles as “ISOAs”. In the past studies (Yamane et al., 2012), we have performed lab-scale experiments on the ISOA formation under UV-irradiation using a batch-type reactor of gas bag. The batch-type one has drawbacks that air flow in the reactor is uncontrolled, and that UV-intensity in it is distributed unevenly. In the present study, we focused on p-dichlorobenzene (p-DCB) as representative VOC derived from mothballs, and characterized ISOA formation using a flow-type reactor made of glass tubes irradiated with UV-ray to overcome the fore-mentioned drawbacks inherent in the batch-type one.