Impacts of Natural Ventilation on Gas and Particle Phase Organic Compounds Indoors: Insights from Chromatogram Binning - Positive Matrix Factorization Analysis

Abstract

Gas- and particle-phase organic compounds were measured during a two-week period at a single-family home in St. Louis during the Air Composition and Reactivity from Outdoor aNd Indoor Mixing (ACRONIM) campaign, with a focus on the effects of window opening on indoor air quality. The organic aerosol (OA) measurements were conducted with a thermal desorption aerosol gas chromatograph (TAG), which provides in-situ, hourly measurements of speciated organic compounds. Volatile organic compounds (VOCs) were collected onto sorption tubes and quantified offline by thermal desorption - gas chromatography - mass spectrometry (TD-GC-MS). A newly developed chromatogram binning - positive matrix factorization (CB-PMF) analysis technique of these GC-MS datasets successfully grouped classes of compounds into distinct factors, and provided evidence that window opening resulted in indoor OA more closely resembling OA found outdoors.

Department(s)

Civil, Architectural and Environmental Engineering

Comments

U.S. Environmental Protection Agency, Grant None

Keywords and Phrases

Factor analysis; Gas chromatography; Mass spectrometry; Window opening

International Standard Book Number (ISBN)

978-171382651-4

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2024 International Society of Indoor Air Quality and Climate, All rights reserved.

Publication Date

01 Jan 2018

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