Av. Stoyanov et al., Acid-base equilibria of polyvalent electrolytes and theoretical description of polyelectrolyte behavior in electrokinetic separations, J BIOCH BIO, 46(1-2), 2000, pp. 21-30
The problem of the theoretical description of the dissociation of polyvalen
t electrolytes is considered. It is shown that the traditional model which
assumes some constant microstate mobility values may have limited applicati
ons, since for each microstate the rate of conversion into other states is
strongly dependent on pH and thus it may often become comparable with the c
haracteristic times of other important processes (ionic atmosphere relaxati
on, biopolymer acceleration by electric field). The question of correct mod
elling of the electrophoretic flux, electrophoretic mobility and conductivi
ty is discussed. (C) 2000 Elsevier Science B.V. All rights reserved.