ELECTROMIGRATION BEHAVIOR OF PALLADIUM 2,2'-DIPYRIDYLATE AND ITS SEPARATION FROM SOME TRANSITION-METAL IONS BY CAPILLARY-ZONE-ELECTROPHORESIS

The effects of pH and 2,2'-dipyridyl, chloride, and hexadecyltrimethyl ammonium bromide concentrations in the running buffer as well as the e ffects of the applied voltage on the electromigration behavior and pea k shape of palladium dipyridylate were examined. The selectivity of se parating Pd(II), Co(II), Co(III), Cu(II), Fe(II), and Ni(II) dipyridyl ates and the possibilities of controlling it by varying the compositio n of the running buffer were considered. The best separating condition s were found for the metal ions examined, except for the Fe(II)-Ni(II) pair. The electromigration behavior of dipyridylates was explained fr om the standpoint of coordination chemistry.