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

Pascale S.J. Lakey, Glenn C. Morrison, Youngbo Won, Krista M. Parry, Michael von Domaros, Douglas J. Tobias, Donghyun Rim, Manabu Shiraiwa

Research output: Contribution to journalArticlepeer-review

56 Scopus citations


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.

Original languageEnglish (US)
Article number56
JournalCommunications Chemistry
Issue number1
StatePublished - Dec 1 2019

All Science Journal Classification (ASJC) codes

  • General Chemistry
  • Materials Chemistry
  • Environmental Chemistry
  • Biochemistry


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