Type Journal Article
Author Caleb Arata
Author Kyle J. Zarzana
Author Pawel K. Misztal
Author Yingjun Liu
Author Steven S. Brown
Author William W Nazaroff
Author Allen H. Goldstein
URL https://doi.org/10.1021/acs.estlett.8b00415
Publication Environmental Science & Technology Letters
Date September 19, 2018
Journal Abbr Environ. Sci. Technol. Lett.
DOI 10.1021/acs.estlett.8b00415
Accessed 2018-09-27 21:15:37
Library Catalog ACS Publications
Abstract We present direct indoor measurements of the nitrate radical (NO3) and dinitrogen pentoxide (N2O5) produced from combustion cooking emissions in a residential kitchen. When the indoor ozone (O3) concentration was low (∼4 ppbv), nitric oxide (NO) emitted from gas stove combustion suppressed NO3 formation. However, at moderate O3 levels (∼40 ppbv), measured NO3 concentrations reached 3–4 pptv, and the indoor NO3 reactivity loss rate coefficient reached 0.8 s–1. A box model of known chemistry agrees with the reactivity estimate and shows that moderate O3 levels led to a nitrate radical production rate of 7 ppbv h–1. These indoor NO3 production rates and reactivities are much higher than those typically found outdoors. We conclude that at low O3 levels indoor combustion suppresses nitrate radical chemistry, but when sufficient O3 enters residences from outdoors or is emitted directly from indoor sources, gas stove combustion emissions promote indoor NO3 chemistry.