| Title: | "Gas-Particle Partitioning of Semivolatile Organic Compounds in a Residence: Influence of Particles from Candles, Cooking, and Outdoors" |
| 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, 94720 California, United States. Now at Department of Biological and Chemical Engineering, Aarhus University, 8000 Aarhus C, Denmark. Department of Chemistry, University of California, Berkeley, 94720 California, United States. Now at BIC-ESAT and SKL-ESPC, College of Environmental Sciences and Engineering, Peking University, 100871 Beijing, China. Now at Department of Civil, Architectural and Environmental Engineering, The University of Texas at Austin, Austin, Texas 78712, United States. Department of Civil and Environmental Engineering, University of California, Berkeley, 94720 California, United States" |
| ISSN/ISBN: | 1520-5851 (Electronic) 0013-936X (Linking) |
| Abstract: | "Semivolatile organic compounds (SVOCs) represent an important class of indoor pollutants. The partitioning of SVOCs between airborne particles and the adjacent air influences human exposure and uptake. Presently, little direct experimental evidence exists about the influence of indoor particle pollution on the gas-particle phase partitioning of indoor SVOCs. In this study, we present time-resolved gas- and particle-phase distribution data for indoor SVOCs in a normally occupied residence using semivolatile thermal desorption aerosol gas chromatography. Although SVOCs in indoor air are found mostly in the gas phase, we show that indoor particles from cooking, candle use, and outdoor particle infiltration strongly affect the gas-particle phase distribution of specific indoor SVOCs. From gas- and particle-phase measurements of SVOCs spanning a range of chemical functionalities (alkanes, alcohols, alkanoic acids, and phthalates) and volatilities (vapor pressures from 10(-13) to 10(-4) atm), we find that the chemical composition of the airborne particles influences the partitioning of individual SVOC species. During candle burning, the enhanced partitioning of gas-phase SVOCs to indoor particles not only affects the particle composition but also enhances surface off-gassing, thereby increasing the total airborne concentration of specific SVOCs, including diethylhexyl phthalate" |
| Keywords: | "Humans *Volatile Organic Compounds/analysis *Air Pollution, Indoor/analysis *Diethylhexyl Phthalate/analysis *Air Pollutants/analysis Gases/analysis Cooking SVOCs alcohols alkanes alkanoic acids emissions indoor air particulate matter phthalates;" |
| Notes: | "MedlineKristensen, Kasper Lunderberg, David M Liu, Yingjun Misztal, Pawel K Tian, Yilin Arata, Caleb Nazaroff, William W Goldstein, Allen H eng Research Support, Non-U.S. Gov't 2023/02/17 Environ Sci Technol. 2023 Feb 28; 57(8):3260-3269. doi: 10.1021/acs.est.2c07172. Epub 2023 Feb 16" |
