The impact of clothing on ozone and squalene ozonolysis products in indoor environments

Multiphase reactions of ozone with human skin oils impact indoor air quality by depleting ozone and forming semi-volatile organic compounds, which can be respiratory and skin irritants. Here we demonstrate the impact of clothing on indoor air composition and human exposure by integrating indoor chem...

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Bibliographic Details
Published in:Communications chemistry 2019-05, Vol.2 (1), Article 56
Main Authors: Lakey, Pascale S. J., Morrison, Glenn C., Won, Youngbo, Parry, Krista M., von Domaros, Michael, Tobias, Douglas J., Rim, Donghyun, Shiraiwa, Manabu
Format: Article
Language:English
Subjects:
639/638/169
639/638/563/934
Aerodynamics
Air quality
Chemistry
Chemistry and Materials Science
Chemistry/Food Science
Composition
Computational fluid dynamics
Computer simulation
Depletion
Exposure
Indoor air pollution
Indoor air quality
Molecular dynamics
Oxidation
Ozone
Protective clothing
Skin
VOCs
Volatile organic compounds
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Summary:Multiphase reactions of ozone with human skin oils impact indoor air quality by depleting ozone and forming semi-volatile organic compounds, which can be respiratory and skin irritants. Here we demonstrate the impact of clothing on indoor air composition and human exposure by integrating indoor chemistry modeling over a wide range of different spatial and temporal scales. Constrained by molecular dynamics simulations that provide key kinetic parameters, the kinetic model reproduces experimental measurements and predicts that squalene could persist in clothing for several hours to over a day depending on ozone concentrations. Soiled clothing protects skin from ozone exposure even with high concentrations, but can enhance concentrations of oxidation products to a ppb level depending on air exchange rates. Computational fluid dynamics simulations reveal that primary products have ~1.6–2.0 times higher concentrations in the breathing zone than in bulk room air, while secondary products are distributed more uniformly throughout a room. Reactions of ozone with human skin oils impact indoor air quality by depleting ozone and forming semi-volatile organic compounds. Here, the authors examine the impact of clothing on indoor air composition and human exposure by integrating indoor chemistry modeling over a range of spatial and temporal scales.
ISSN:2399-3669
2399-3669
DOI:10.1038/s42004-019-0159-7