ABSTRACT
The origin of the surface charge and electric surface prop-
erties of solid inorganic oxides in aqueous electrolyte
solutions are fairly well known. Main mechanisms of the
generation of the surface charge in such systems are
either the loss (-SO2) or the gain (SOH2 þ) of proton by
surface hydroxilic groups (-SOH) due to their reactions
of acid-base equilibria with water and the adsorption of
the background electrolyte ions (Kþ and A2) on ionized hydroxilic groups (-SO2-Kþ and -SOH2
þ-A2). But the mechanisms operating in nonaqueous solutions are not
clearly understood.