STUDIES ON BINARY COMPLEXES OF ZINC (II), CADMIUM (II) AND IRON (II) WITH NORVALINEIN SOLUTION

Abstract

A method involving the use of Paper Electrophorectic Technique (PET) is described for the study of binary complex system in solution . This method is based on the movement of a spot of metal ion in an electric field at various pHs of background electrolyte. A graph of pH versus mobility was used to obtain information on the binary complexes and to calculate its stability constants. The stability constants of Zn(II) - Norvaline, Cd(II) - Norvaline and Fe(II) -Norvaline complexes are found to be (4.68 ± 0.02, 2.82 ± 0.07), (4.32 ± 0.01, 2.89 ± 0.09) and (4.05 ± 0.02, 2.74 ± 0.05), respectively at ionic strength of 0.1 Mol L-1 and a temperature of 35°C.A method involving the use of Paper Electrophorectic Technique (PET) is described for the study of binary complex system in solution . This method is based on the movement of a spot of metal ion in an electric field at various pHs of background electrolyte. A graph of pH versus mobility was used to obtain information on the binary complexes and to calculate its stability constants. The stability constants of Zn(II) - Norvaline, Cd(II) - Norvaline and Fe(II) -Norvaline complexes are found to be (4.68 ± 0.02, 2.82 ± 0.07), (4.32 ± 0.01, 2.89 ± 0.09) and (4.05 ± 0.02, 2.74 ± 0.05), respectively at ionic strength of 0.1 Mol L-1 and a temperature of 35°C.