Reversible charging of the ice-water interface. II. Estimation of equilibrium parameters.
Equilibrium parameters characterizing the ice-water interface were obtained from electrokinetic and potentiometric data. The dependency of surface potential on pH was measured by the ice electrode. Electrokinetic zeta potentials were measured by electrophoresis. In the interpretation, the 1-pK and 2-pK concepts of the surface complexation model, developed for metal oxides, were used. The equilibrium parameters (constants of surface reactions) were determined. The results were confirmed by numerical simulations. Both 1-pK and 2-pK models fit the experimental data well.
Kallay
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Laboratory of Physical Chemistry, Department of Chemistry, Faculty of Science, University of Zagreb, Marulićev trg 19, P.O. Box 163, Croatia. nkallay@prelog.chem.pmf.hr
Cop
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Chibowski
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Holysz
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