Acid-base equilibria of polyvalent electrolytes and theoretical description of polyelectrolyte behavior in electrokinetic separations.
The problem of the theoretical description of the dissociation of polyvalent electrolytes is considered. It is shown that the traditional model which assumes some constant microstate mobility values may have limited applications, 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 characteristic times of other important processes (ionic atmosphere relaxation, biopolymer acceleration by electric field). The question of correct modelling of the electrophoretic flux, electrophoretic mobility and conductivity is discussed.
Stoyanov
A V
AV
University of Milan, LITA, Segrate, Via Fratelli Cervi 93, 20090, Milan, Italy.
Stozhkova
I N
IN
Righetti
P G
PG
D001704:Biopolymers / Q000737:chemistry* / Q000378:metabolism; D004553:Electric Conductivity; D004573:Electrolytes / Q000737:chemistry* / Q000378:metabolism; D004586:Electrophoresis; D018698:Glutamic Acid / Q000737:chemistry / Q000378:metabolism; D005998:Glycine / Q000737:chemistry / Q000378:metabolism; D006863:Hydrogen-Ion Concentration; D007477:Ions; D008956:Models, Chemical; D010434:Pepsin A / Q000737:chemistry / Q000378:metabolism; D012709:Serum Albumin / Q000737:chemistry / Q000378:metabolism; D013816:Thermodynamics
D001704:Biopolymers; D004573:Electrolytes; D007477:Ions; D012709:Serum Albumin; D018698:Glutamic Acid; D010434:Pepsin A; D005998:Glycine