| Abstract: | Separation and determination of metal ions based on the formation of chelate anions with 1-Ni-troso-2, 7-dihydrexynaphthalene-3, 6-disulfonic acid (1N2, 7O3, 6S) was studied by using HPCE of the nine metal ions examined, the ions that can be detected sensitively -with 1-Nitroso-2, 7-dihydrexynaphthalene-3, 6-disul-fonic acid were Fe2 , Co2 .Cu2 . Ni2 ,Zn2 and Pd2 , The cobalt chelate could exist in two oxidation states of cobalt. When TBA were added m electrophoretic solutions, the drastic changes in electrophoretic mobilities of chelate were observed, which was due to the ion association between chelates anions and TBA . The ion association constants of chelate anions with TBA were determined by using the change in electrophoretic mobilities of chelates, metal ions tested were separated within 10 min using 30cm silica capillary(50m i. d). |
