Paper electrophoretic determination of the stability constants of biologically significant binary complexes of beryllium(II) and cobalt(II) with sarcosine

Quantitative indication of the process of forming a complex comes from the evaluation of the stability constants or formation constant, which characterize the equilibria corresponding to the successive addition of ligands. Paper electrophoretic technique is described for the study of beryllium(II) and cobalt(II) biologically significant binary complexes with sarcosine. The stability constants of ML and ML₂ complex species of Be(II)/Co(II)—sarcosine have been found to be (6.17 ± 0.09, 4.06 ± 0.04) and (4.27 ± 0.07, 2.98 ± 0.11) (log-arithm stability constant values), respectively at ionic strength 0.1 Mol L⁻¹ and a temperature of 35°C.