| Title: | Sources and dynamics of semivolatile organic compounds in a single-family residence in northern California |
| Author(s): | Kristensen K; Lunderberg DM; Liu Y; Misztal PK; Tian Y; Arata C; Nazaroff WW; Goldstein AH; |
| Address: | "Department of Environmental Science, Policy, and Management, University of California, Berkeley, California. Department of Chemistry, University of California, Berkeley, California. Department of Civil and Environmental Engineering, University of California, Berkeley, California" |
| ISSN/ISBN: | 1600-0668 (Electronic) 0905-6947 (Linking) |
| Abstract: | "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. Enhanced ventilation was effective in reducing SVOCs in indoor air, but only temporarily; SVOCs recovered to previous levels within hours" |
| Keywords: | "Air Pollution, Indoor/*analysis California Construction Materials Cooking Environmental Monitoring/methods *Housing Humans San Francisco Ventilation Volatile Organic Compounds/*analysis cleaning emissions gas/particle partitioning occupancy;" |
| Notes: | "MedlineKristensen, Kasper Lunderberg, David M Liu, Yingjun Misztal, Pawel K Tian, Yilin Arata, Caleb Nazaroff, William W Goldstein, Allen H eng Observational Study Research Support, Non-U.S. Gov't England 2019/04/21 Indoor Air. 2019 Jul; 29(4):645-655. doi: 10.1111/ina.12561. Epub 2019 May 27" |
