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Journal article
Surface reservoirs dominate dynamic gas-surface partitioning of many indoor air constituents
Science advances, v 6(8), eaay8973
01 Feb 2020
PMID: 32128415
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Human health is affected by indoor air quality. One distinctive aspect of the indoor environment is its very large surface area that acts as a poorly characterized sink and source of gas-phase chemicals. In this work, air-surface interactions of 19 common indoor air contaminants with diverse properties and sources were monitored in a house using fast-response, on-line mass spectrometric and spectroscopic methods. Enhanced-ventilation experiments demonstrate that most of the contaminants reside in the surface reservoirs and not, as expected, in the gas phase. They participate in rapid air-surface partitioning that is much faster than air exchange. Phase distribution calculations are consistent with the observations when assuming simultaneous equilibria between air and large weakly polar and polar absorptive surface reservoirs, with acid-base dissociation in the polar reservoir. Chemical exposure assessments must account for the finding that contaminants that are fully volatile under outdoor air conditions instead behave as semivolatile compounds indoors.
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Details
- Title
- Surface reservoirs dominate dynamic gas-surface partitioning of many indoor air constituents
- Creators
- Chen Wang - University of TorontoDouglas B. Collins - University of TorontoCaleb Arata - University of California, BerkeleyAllen H. Goldstein - University of California, BerkeleyJames M. Mattila - Colorado State UniversityDelphine K. Farmer - Colorado State UniversityLaura Ampollini - Drexel UniversityPeter F. DeCarlo - Drexel UniversityAtila Novoselac - The University of Texas at AustinMarina E. Vance - University of Colorado BoulderWilliam W. Nazaroff - University of California, BerkeleyJonathan P. D. Abbatt - University of Toronto
- Publication Details
- Science advances, v 6(8), eaay8973
- Publisher
- Amer Assoc Advancement Science
- Number of pages
- 11
- Grant note
- G-2016-7049; G-2016-7050; G-2017-9944 / Chemistry of Indoor Environments program of the Alfred P. Sloan Foundation; Alfred P. Sloan Foundation
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Civil, Architectural, and Environmental Engineering
- Web of Science ID
- WOS:000514842000029
- Scopus ID
- 2-s2.0-85079668254
- Other Identifier
- 991019168338704721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Environmental Sciences