2024-10-10 スイス連邦工科大学ローザンヌ校(EPFL)
＜関連情報＞
- https://actu.epfl.ch/news/how-personal-care-products-affect-indoor-air-quali/
- https://pubs.acs.org/doi/10.1021/acs.estlett.4c00353
パーソナルケア製品関連の揮発性有機化合物の室内放出、酸化、新たな粒子形成 Indoor Emission, Oxidation, and New Particle Formation of Personal Care Product Related Volatile Organic Compounds
Tianren Wu,Tatjana Müller,Nijing Wang,Joseph Byron,Sarka Langer,Jonathan Williams,Dusan Licina
Environmental Science & Technology Letters Published: August 30, 2024
DOI:https://doi.org/10.1021/acs.estlett.4c00353
Abstract
Personal care products (PCPs) contain diverse volatile organic compounds (VOCs) and routine use of PCPs indoors has important implications for indoor air quality and human chemical exposures. This chamber study deployed aerosol instrumentation and two online mass spectrometers to quantify VOC emissions from the indoor use of five fragranced PCPs and examined the formation of gas-phase oxidation products and particles upon ozone-initiated oxidation of reactive VOCs. The tested PCPs include a perfume, a roll-on deodorant, a body spray, a hair spray, and a hand lotion. Indoor use of these PCPs emitted over 200 VOCs and resulted in indoor VOC mixing ratios of several parts per million. The VOC emission factors for the PCPs varied from 2 to 964 mg g–1. We identified strong emissions of terpenes and their derivatives, which are likely used as fragrant additives in the PCPs. When using the PCPs in the presence of indoor ozone, these reactive VOCs underwent oxidation reactions to form a variety of gas-phase oxidized vapors and led to rapid new particle formation (NPF) events with particle growth rates up to ten times higher than outdoor atmospheric NPF events. The resulting ultrafine particle concentrations reach ∼34000 to ∼200000 cm–3 during the NPF events.
