  Some aspects of direct ion transfer across the water/1,2-dichloroethane are
analyzed using a very simple model based on thermodynamic considerations. It
was concluded that ion solvation by water molecules may occur in some
particular cases in the organic phase, delivering an important contribution to
the Gibbs free energy of ion transfer between the aqueous and the organic
phase. In general terms, this particular type of transfer should be favored in
the case of highly charged small ions at interfaces with a relatively low
surface tension and a large difference between the reciprocal of the
corresponding dielectric constants.
