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Journal article
Contrasting Chemical Complexity and the Reactive Organic Carbon Budget of Indoor and Outdoor Air
Environmental science & technology, v 56(1)
04 Jan 2022
PMID: 34910454
Abstract
Reactive organic carbon (ROC) comprises a substantial fraction of the total atmospheric carbon budget. Emissions of ROC fuel atmospheric oxidation chemistry to produce secondary pollutants including ozone, carbon dioxide, and particulate matter. Compared to the outdoor atmosphere, the indoor organic carbon budget is comparatively understudied. We characterized indoor ROC in a test house during unoccupied, cooking, and cleaning scenarios using various online mass spectrometry and gas chromatography measurements of gaseous and particulate organics. Cooking greatly impacted indoor ROC concentrations and bulk physicochemical properties (e.g., volatility and oxidation state), while cleaning yielded relatively insubstantial changes. Additionally, cooking enhanced the reactivities of hydroxyl radicals and ozone toward indoor ROC. We observed consistently higher median ROC concentrations indoors (>= 223 mu g C m(-3)) compared to outdoors (54 mu g C m(-3)), demonstrating that buildings can be a net source of reactive carbon to the outdoor atmosphere, following its removal by ventilation. We estimate the unoccupied test house emitted 0.7 g C day(-1) from ROC to outdoors. Indoor ROC emissions may thus play an important role in air quality and secondary pollutant formation outdoors, particularly in urban and suburban areas, and indoors during the use of oxidant-generating air purifiers.
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21 citations in Scopus
Details
- Title
- Contrasting Chemical Complexity and the Reactive Organic Carbon Budget of Indoor and Outdoor Air
- Creators
- James M. Mattila - Colorado State UniversityCaleb Arata - University of California, BerkeleyAndrew Abeleira - Colorado State UniversityYong Zhou - Colorado State UniversityErin F. Katz - University of California, BerkeleyAllen H. Goldstein - University of California, BerkeleyJonathan P. D. Abbatt - Univ Toronto, Dept Chem, Toronto, ON M5S 3H6, CanadaPeter F. DeCarlo - Drexel UniversityMarina E. Vance - University of Colorado BoulderDelphine K. Farmer - Colorado State University
- Publication Details
- Environmental science & technology, v 56(1)
- Publisher
- American Chemical Society; Washington, DC
- Number of pages
- 10
- Grant note
- G-2016-7049; G-2016-7050; G-2017-9944; G-2019-11404; G2019-11412; G-2019-12301 / Alfred P. Sloan Foundation
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Marketing
- Web of Science ID
- WOS:000763499800012
- Scopus ID
- 2-s2.0-85121927570
- Other Identifier
- 991019169665204721