Impact of indoor surface mass accretion on heterogeneous ozone chemistry

Elliott T. Gall, Donghyun Rim, Elena Christopher-Allison

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Flux of ozone (O3) to indoor surfaces is a function of airflow and surface O3 reactivity. In addition to material composition, surface reactivity is affected by mass accretion due to particles and semi-volatile organic compounds adsorbed to surfaces. We investigate the impact of mass accretion on O3 reactivity using glass surfaces as a test material. Initially clean, inert glass surfaces were deployed to field sites for 0-60 days and collected weekly. Average mass accretion rates were 18.5 mg/(m2 d) and 10.6 mg/(m2 d) in a naturally ventilated (NV) and mechanically ventilated (MV) space, respectively. Reaction probabilities generally increased with time deployed. Regression analysis shows accreted mass removed 4.3 nmol O3/mg and 2.4 nmol O3/mg for the NV and MV space, respectively. A study of volatile organic byproducts formed from O3-accreted mass reactions is currently underway.

Original languageEnglish (US)
Title of host publication15th Conference of the International Society of Indoor Air Quality and Climate, INDOOR AIR 2018
PublisherInternational Society of Indoor Air Quality and Climate
ISBN (Electronic)9781713826514
StatePublished - 2018
Event15th Conference of the International Society of Indoor Air Quality and Climate, INDOOR AIR 2018 - Philadelphia, United States
Duration: Jul 22 2018Jul 27 2018

Publication series

Name15th Conference of the International Society of Indoor Air Quality and Climate, INDOOR AIR 2018

Conference

Conference15th Conference of the International Society of Indoor Air Quality and Climate, INDOOR AIR 2018
Country/TerritoryUnited States
CityPhiladelphia
Period7/22/187/27/18

All Science Journal Classification (ASJC) codes

  • Pollution

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