On the complex-formation between Cd(II) and EDTA.
The complex-formation between cadmium and EDTA has been studied at 25 degrees in 1.0M sodium nitrate medium, by measuring with a glass electrode the hydrogen-ion concentrations of a series of solutions containing varying amounts of cadmium and EDTA, and the free concentration of cadmium with a cadmium-amalgam electrode. The experimental data, which were analysed by using the ETITR version of the general error-minimizing computer program LETAGROP, may be explained satisfactorily by assuming the formation of the species CdL, CdHL, CdH(2)L and Cd(2)L in the pH range 1.8-6.5. The equilibrium constants for the formation of these species are also reported.
Jawaid
M
M
Department of Analytical Chemistry, The Royal Institute of Technology, 100 44 Stockholm, Sweden.