| Title: | Temperature dependence of the particle/gas partition coefficient: An application to predict indoor gas-phase concentrations of semi-volatile organic compounds |
| Author(s): | Wei W; Mandin C; Blanchard O; Mercier F; Pelletier M; Le Bot B; Glorennec P; Ramalho O; |
| Address: | "University of Paris-Est, Scientific and Technical Center for Building (CSTB), Health and Comfort Department, French Indoor Air Quality Observatory (OQAI), 84 Avenue Jean Jaures, Champs sur Marne, 77447 Marne la Vallee Cedex 2, France. Electronic address: Wenjuan.Wei@cstb.fr. University of Paris-Est, Scientific and Technical Center for Building (CSTB), Health and Comfort Department, French Indoor Air Quality Observatory (OQAI), 84 Avenue Jean Jaures, Champs sur Marne, 77447 Marne la Vallee Cedex 2, France; INSERM-U1085, Irset-Research Institute for Environmental and Occupational Health, Rennes, France; LERES-Environment and Health Research Laboratory (Irset and EHESP Technologic Platform), Rennes, France. EHESP-School of Public Health, Sorbonne Paris Cite, Rennes, France; INSERM-U1085, Irset-Research Institute for Environmental and Occupational Health, Rennes, France. EHESP-School of Public Health, Sorbonne Paris Cite, Rennes, France; LERES-Environment and Health Research Laboratory (Irset and EHESP Technologic Platform), Rennes, France; INSERM-U1085, Irset-Research Institute for Environmental and Occupational Health, Rennes, France. University of Paris-Est, Scientific and Technical Center for Building (CSTB), Health and Comfort Department, French Indoor Air Quality Observatory (OQAI), 84 Avenue Jean Jaures, Champs sur Marne, 77447 Marne la Vallee Cedex 2, France" |
| DOI: | 10.1016/j.scitotenv.2016.04.106 |
| ISSN/ISBN: | 1879-1026 (Electronic) 0048-9697 (Linking) |
| Abstract: | "The indoor gas-phase concentrations of semi-volatile organic compounds (SVOCs) can be predicted from their respective concentrations in airborne particles by applying the particle/gas partitioning equilibrium. The temperature used for partitioning is often set to 25 degrees C. However, indoor temperatures frequently differ from this reference value. This assumption may result in errors in the predicted equilibrium gas-phase SVOC concentrations. To improve the prediction model, the temperature dependence of the particle/gas partition coefficient must be addressed. In this paper, a theoretical relationship between the particle/gas partition coefficient and temperature was developed based on the SVOC absorptive mechanism. The SVOC particle/gas partition coefficients predicted by employing the derived theoretical relationship agree well with the experimental data retrieved from the literature (R>0.93). The influence of temperature on the equilibrium gas-phase SVOC concentration was quantified by a dimensionless analysis of the derived relationship between the SVOC particle/gas partition coefficient and temperature. The predicted equilibrium gas-phase SVOC concentration decreased by between 31% and 53% when the temperature was lowered by 6 degrees C, while it increased by up to 750% when the indoor temperature increased from 15 degrees C to 30 degrees C" |
| Keywords: | "Air Pollutants/*analysis Air Pollution, Indoor/*analysis Environmental Monitoring/*methods Gases/*analysis Models, Theoretical Particulate Matter/*analysis Temperature Volatile Organic Compounds/*analysis Equilibrium Indoor air quality Partitioning SVOCs;" |
| Notes: | "MedlineWei, Wenjuan Mandin, Corinne Blanchard, Olivier Mercier, Fabien Pelletier, Maud Le Bot, Barbara Glorennec, Philippe Ramalho, Olivier eng Netherlands 2016/05/07 Sci Total Environ. 2016 Sep 1; 563-564:506-12. doi: 10.1016/j.scitotenv.2016.04.106. Epub 2016 May 3" |
