Thermodynamic modelling of aqueous aerosols containing electrolytes and dissolved organic compounds. II. An extended Zdanovskii–Stokes–Robinson approach

Clegg, Simon L., Seinfeld, John H. and Edney, Edward O. (2003) Thermodynamic modelling of aqueous aerosols containing electrolytes and dissolved organic compounds. II. An extended Zdanovskii–Stokes–Robinson approach. Journal of Aerosol Science, 34 (6). pp. 667-690.

Full text not available from this repository. (Request a copy)

Abstract

The Zdanovskii-Stokes-Robinson (ZSR) equation, or linear isopiestic relation, can be used to estimate osmotic and activity coefficients of multicomponent mixtures, based on the properties of pure (single solute) solutions. We have generalised an extension to the ZSR equation (for ternary mixtures) to systems containing an indefinite number of solutes, and derived the corresponding equations for solute activity coefficients. The new model is tested by calculating salt solubilities in Na+/NH4+/Cl-/SO42- aqueous solutions, liquid-liquid phase equilibrium in the acetone/glycerol/water system, and thermodynamic properties of aqueous NaCl/sucrose solutions (all at 298.15 K). The mixture parameters, up to three for each pair of solutes, significantly increase the accuracy of the method. It is least satisfactory for solutions containing both electrolytes and non-electrolytes, and it was found that the ZSR equation predicts activity coefficients of trace amounts of non-electrolytes in salt solutions that do not conform to the Setchenow relationship.

Item Type:	Article
Faculty \ School:	Faculty of Science > School of Environmental Sciences
UEA Research Groups:	Faculty of Science > Research Groups > Centre for Ocean and Atmospheric Sciences Faculty of Science > Research Groups > Marine and Atmospheric Sciences (former - to 2017) Faculty of Science > Research Groups > Climate, Ocean and Atmospheric Sciences (former - to 2017)
Depositing User:	Rosie Cullington
Date Deposited:	16 May 2011 14:33
Last Modified:	24 Oct 2022 02:54
URI:	https://ueaeprints.uea.ac.uk/id/eprint/30611
DOI:	10.1016/S0021-8502(03)00019-3

Actions (login required)

View Item