Sources and dynamics of semivolatile organic compounds in a single-family residence in northern California
- Univ. of California, Berkeley, CA (United States); Aarhus Univ. (Denmark)
- Univ. of California, Berkeley, CA (United States)
- Univ. of California, Berkeley, CA (United States); Peking Univ. (China)
- Univ. of California, Berkeley, CA (United States); Centre for Ecology & Hydrology, Edinburgh, Scotland (United Kingdom)
Semivolatile organic compounds (SVOCs) emitted from building materials, consumer products, and occupant activities alter the composition of air in residences where people spend most of their time. Exposures to specific SVOCs potentially pose risks to human health. However, little is known about the chemical complexity, total burden, and dynamic behavior of SVOCs in residential environments. Furthermore, little is known about the influence of human occupancy on the emissions and fates of SVOCs in residential air. Here, we present the first-ever hourly measurements of airborne SVOCs in a residence during normal occupancy. We employ state-of-the-art semivolatile thermal-desorption aerosol gas chromatography (SV-TAG). Indoor air is shown consistently to contain much higher levels of SVOCs than outdoors, in terms of both abundance and chemical complexity. Time-series data are characterized by temperature-dependent elevated background levels for a broad suite of chemicals, underlining the importance of continuous emissions from static indoor sources. Substantial increases in SVOC concentrations were associated with episodic occupant activities, especially cooking and cleaning. The number of occupants within the residence showed little influence on the total airborne SVOC concentration. Finally, enhanced ventilation was effective in reducing SVOCs in indoor air, but only temporarily; SVOCs recovered to previous levels within hours.
- Research Organization:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC); Alfred P. Sloan Foundation; Carlsberg Foundation
- Grant/Contract Number:
- AC02-05CH11231
- OSTI ID:
- 1604688
- Journal Information:
- Indoor Air, Journal Name: Indoor Air Journal Issue: 4 Vol. 29; ISSN 0905-6947
- Publisher:
- WileyCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Surface reservoirs dominate dynamic gas-surface partitioning of many indoor air constituents
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Overview of HOMEChem: House Observations of Microbial and Environmental Chemistry
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journal | January 2019 |
Emissions of VOCs, SVOCs, and mold during the construction process: Contribution to indoor air quality and future occupants’ exposure
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journal | February 2020 |
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