The Use of N,N-Bis(hydroxybenzyl)ethylenediamine-N,N-diacetic Acid (HBED) for the Determination of 3+ Metal Ions by Capillary Electrophoresis

O.V. Krokhin, H. Hoshino, O.A. Shpigun, T. Yotsuyanagi

Chem. Lett., 1999, P.903-904

ABSTRACT. The separation of Bi(III), Sc(III), In(III), Co(III), Ga(III), Al(III), Cr(III), Mn(III), Fe(III) complexes with HBED was demonstrated in ion exchange variant of electrokinetic chromatography. The use of high concentration of cationic polymer and careful choice of counter ion for carrier electrolyte allowed to stretch selectivity scale for the complete baseline resolution of all studied chelates with efficiency 40-300 thousands theoretical plates. Favorable arrangement of donor groups in HBED structure made possible first separation of Ga(III) and In(III) chelates by CE.

Laboratory of Chromatography