TY - JOUR
T1 - Influence of cationic polymers on separation selectivity in kinetic differentiation mode capillary electrophoresis of metal-4-(2- pyridylazo)resorcinolato chelates
AU - Krokhin, O. V.
AU - Hoshino, H.
AU - Shpigun, O. A.
AU - Yotsuyanagi, T.
N1 - Funding Information:
The authors thank the Japan Society for the Promotion of Science for the financial support of O.V.K. (ID No. PS95671) in his stay in Tohoku University for 16 March–12 June 1996.
PY - 1997/6/6
Y1 - 1997/6/6
N2 - The influence of four kinds of cationic polymers on electrophoretic mobilities of V(V), Co(II), Ni(II), and Fe(II)-4-(2-pyridylazo)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 carrier electrolyte (pH, counter-ion, polymer and acetonitrile concentrations) were changed to examine the elution order of the complexes. The behaviour of the chelates can be described in terms of ion-exchange separation. Fast separation of the four chelates with efficiency of more than 450 000 theoretical plates per meter in CE with reversed polarity power supply was easily performed.
AB - The influence of four kinds of cationic polymers on electrophoretic mobilities of V(V), Co(II), Ni(II), and Fe(II)-4-(2-pyridylazo)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 carrier electrolyte (pH, counter-ion, polymer and acetonitrile concentrations) were changed to examine the elution order of the complexes. The behaviour of the chelates can be described in terms of ion-exchange separation. Fast separation of the four chelates with efficiency of more than 450 000 theoretical plates per meter in CE with reversed polarity power supply was easily performed.
KW - 4-(2-Pyridylazo)resorcinol complexes
KW - Buffer composition
KW - Metal chelates
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U2 - 10.1016/S0021-9673(96)01048-5
DO - 10.1016/S0021-9673(96)01048-5
M3 - Article
AN - SCOPUS:0030847036
VL - 772
SP - 339
EP - 346
JO - Journal of Chromatography A
JF - Journal of Chromatography A
SN - 0021-9673
IS - 1-2
ER -