title: Temperature dependence of the particle/gas partition coefficient: An application to predict indoor gas-phase concentrations of semi-volatile organic compounds.
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°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°C, while it increased by up to 750% when the indoor temperature increased from 15°C to 30°C.
authors.affiliation: University of Paris-Est, Scientific and Technical Center for Building (CSTB), Health and Comfort Department, French Indoor Air Quality Observatory (OQAI), 84 Avenue Jean Jaurès, Champs sur Marne, 77447 Marne la Vallée Cedex 2, France. Electronic address: Wenjuan.Wei@cstb.fr.
authors.forename: Wenjuan
authors.initials: W
authors.lastname: Wei
authors.affiliation: University of Paris-Est, Scientific and Technical Center for Building (CSTB), Health and Comfort Department, French Indoor Air Quality Observatory (OQAI), 84 Avenue Jean Jaurès, Champs sur Marne, 77447 Marne la Vallée 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.
authors.forename: Corinne
authors.initials: C
authors.lastname: Mandin
authors.affiliation: EHESP-School of Public Health, Sorbonne Paris Cité, Rennes, France; INSERM-U1085, Irset-Research Institute for Environmental and Occupational Health, Rennes, France.
authors.forename: Olivier
authors.initials: O
authors.lastname: Blanchard
authors.affiliation: EHESP-School of Public Health, Sorbonne Paris Cité, 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.
authors.forename: Fabien
authors.initials: F
authors.lastname: Mercier
authors.affiliation: EHESP-School of Public Health, Sorbonne Paris Cité, Rennes, France; INSERM-U1085, Irset-Research Institute for Environmental and Occupational Health, Rennes, France.
authors.forename: Maud
authors.initials: M
authors.lastname: Pelletier
authors.affiliation: EHESP-School of Public Health, Sorbonne Paris Cité, 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.
authors.forename: Barbara
authors.initials: B
authors.lastname: Le Bot
authors.affiliation: EHESP-School of Public Health, Sorbonne Paris Cité, Rennes, France; INSERM-U1085, Irset-Research Institute for Environmental and Occupational Health, Rennes, France.
authors.forename: Philippe
authors.initials: P
authors.lastname: Glorennec
authors.affiliation: University of Paris-Est, Scientific and Technical Center for Building (CSTB), Health and Comfort Department, French Indoor Air Quality Observatory (OQAI), 84 Avenue Jean Jaurès, Champs sur Marne, 77447 Marne la Vallée Cedex 2, France.
authors.forename: Olivier
authors.initials: O
authors.lastname: Ramalho
mesh_terms: D000393:Air Pollutants / Q000032:analysis*; D016902:Air Pollution, Indoor / Q000032:analysis*; D004784:Environmental Monitoring / Q000379:methods*; D005740:Gases / Q000032:analysis*; D008962:Models, Theoretical; D052638:Particulate Matter / Q000032:analysis*; D013696:Temperature; D055549:Volatile Organic Compounds / Q000032:analysis*
chemical_list: D000393:Air Pollutants; D005740:Gases; D052638:Particulate Matter; D055549:Volatile Organic Compounds
keywords: Equilibrium; Indoor air quality; Partitioning; SVOCs