O.V. Krokhin, H. Hoshino, O.A. Shpigun, T. Yotsuyanagi
J.Chromatogr. A, v.772(1-2), p.339-346 (1997)
ABSTRACT. The influence of four kinds of cationic polymers on electrophoretic mobilities of V(V), Co(II), Ni(II), and Fe(II) - 4-(2-pyridilazo)resorcinolato chelates was investigated in kinetic differentiation mode capillary electrophoresis (CE). It was shown that the addition of cationic polymers strongly changes selectivity of such a type of separation. Four parameters of cariier electrolyte (pH, counter-ion, polymer and acetonitrile concentration) were changed to examine the elution order of the complexe . The behaviour of the chelates can be described in terms of ion-exchange separation. Fast separation of the four chelates with effeciency of more than 450 000 theoretical plates per meter in CE with reversed polarity power supply was easily performed.