Ions approach an
interface differently depending on the forces in play. Ions are non-specifically adsorbed (positively
or negatively) when they are subjected in the
interphase only to long-range coulombic interactions (attraction or repulsion). They are believed
to retain their
solvation shell, and in the position of closest approach to the
interface they are separated from it by one or more molecular layers.
Source:
PAC, 1986, 58, 437
(Interphases in systems of conducting phases (Recommendations 1985))
on page 447