Second-generation inorganic aerosol model |
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| Institution: | 1. Department of Management and Engineering (DTG), University of Padova, Vicenza, Italy;2. Construction Technologies Institute (ITC), National Research Council (CNR), Padova, Italy;1. Laboratoire d''Analyse et Conception des Procédés Industriels, Ecole Nationale des Sciences Appliquées ENSA-Safi, Université Cadi Ayyad Marrakech, Route Sidi Bouzid, Safi 46000, Morocco;2. Institut Supérieur des Professions Infirmières et Techniques de Santé Marrakech, Rue Abdelouahab Derraq, Marrakech 40000, Morocco;3. Ecole Royale Navale, Département de Recherches et Projets, Laboratoire de Thermodynamique, Boulevard Sour Jdid, Casablanca 20000, Morocco;4. Equipe de Thermodynamique et Energétique, Centre de Recherches en Energie, Département de Physique, Faculté de Sciences, Université Mohammed V, Agdal, B.P.1014, 10090 Rabat, Morocco;5. Laboratoire Matériaux, Substances Naturelles, Environnement & Modélisation (LMSNEM), Faculté Polydisciplinaire de Taza, Université Sidi Mohamed Ben Abdellah, Fès, Route d''Oujda, B.P. 1223 Taza, Morocco |
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| Abstract: | Accurate prediction of the size distribution of the inorganic components of atmospheric aerosols must account for both therthermodynamic properties of the aerosol particles and transport between the gas and aerosol phases. For volatile inorganic species the transport rate is governed by the particle surface partial pressures which, in turn, is determined by the phase state and composition of the aerosol. We develop a model of the temporal composition of atmospheric aerosol particles based on their transport and thermodynamic properties. Included in the model is an improved theory of the temperature and composition dependence of deliquescence. Components of the model are tested against measurements of activity coefficients in single- and multicomponent aqueous solutions and general agreement is found. Aerosol water predictions are significantly higher under conditions of low relative humidity due to the improved theory of deliquescence. |
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