Temperature dependence of the particle/gas partition coefficient: An application to predict indoor gas-phase concentrations of semi-volatile organic compounds

Autor: Olivier Blanchard, Philippe Glorennec, Wenjuan Wei, Maud Pelletier, Barbara Le Bot, Olivier Ramalho, Corinne Mandin, Fabien Mercier
Přispěvatelé: Centre Scientifique et Technique du Bâtiment (CSTB), Institut de recherche en santé, environnement et travail (Irset), Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique )-Institut National de la Santé et de la Recherche Médicale (INSERM)-École des Hautes Études en Santé Publique [EHESP] (EHESP)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Université d'Angers (UA), Laboratoire d'étude et de recherche en environnement et santé (LERES), École des Hautes Études en Santé Publique [EHESP] (EHESP), The ECOS project was supported by the French Scientific Program on Endocrine Disruptors (PNRPE, Grant n°2100522667), the French Agency for Food, Environmental and Occupational Health and Safety (ANSES, Grant n°2011-1-128), the French Observatory of Indoor Air Quality (OQAI, Grants 2011 and 2012), the Scientific and Technical Building Centre (CSTB), and the School of Public Health (EHESP).The preparation of this manuscript was performed during a scientific visit to CSTB (WW) and was supported by a grant from the 'Carnot Programme' (Grant 2011)., Université d'Angers (UA)-Université de Rennes (UR)-École des Hautes Études en Santé Publique [EHESP] (EHESP)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Jonchère, Laurent
Jazyk: angličtina
Rok vydání: 2016
Předmět:
Zdroj: Science of the Total Environment
Science of the Total Environment, Elsevier, 2016, 563–564, pp.506-512. ⟨10.1016/j.scitotenv.2016.04.106⟩
Science of the Total Environment, 2016, 563–564, pp.506-512. ⟨10.1016/j.scitotenv.2016.04.106⟩
ISSN: 0048-9697
1879-1026
Popis: International audience; 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.
Databáze: OpenAIRE
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