Aerosol Science and Technology · 1997 · 78 citations · 47 references
EngineeringChemistrySolution (Chemistry)Thermodynamic PropertiesChemical EngineeringAerosol TransportMolecular ThermodynamicsAtmospheric ScienceMineral-fluid InteractionAnalytical ChemistryThermodynamicsMaterials ScienceSolid-state IonicAerosol FormationIon ExchangeAvailable Activity DataHigh SupersaturationPhysical ChemistryAqueous AerosolsElectrochemistryPhase EquilibriumMole-fraction-based Thermodynamic ModelInterfacial PhenomenaAtmospheric ProcessGeochemistryChemical KineticsElectrodynamic Balance Measurements
ABSTRACT A mole-fraction-based thermodynamic model is used to represent available activity data, salt solubilities, and electrodynamic balance measurements for aqueous NaCl, Na2SO4, NaNO3 and their mixtures at 298.15 K. The results are presented as fitted ion-interaction parameters and equilibrium constants. These enable ion and solvent activities, and saturation with respect to five possible solid phases (NaCl, NaNO3, Na2SO4·10H2O, Na2SO4, and NaNO3·Na2SO4·H2O) to be calculated for all mixture compositions to relative humidities of ≤60%, and to high degrees of supersaturation with respect to the dissolved salts. Extension of the model to other systems is discussed.
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