Abstract

TEWARI, Brij B.. Interaction of hydroxyproline with bivalent metal ions in chemical and biological systems. S.Afr.j.chem. (Online) [online]. 2010, vol.63, pp.162-167. ISSN 1996-840X.

A recent technique involving the use of paper electrophoresis is described for the study of equilibria in binary complex systems in solution. The stability constants of the ML and ML₂ complex species of some metal ions, namely beryllium(II) and cobalt(II), with hydroxyproline were determined in 0.1 mol L^-1 perchloric acid and a temperature of 35 °C. The logarithm stability constants of the ML and ML₂ complexes of hydroxyproline were found to be 7.39 ± 0.07 and 5.90 ± 0.03, and 4.73 ± 0.08 and 3.71 ± 0.11 for the beryllium(II) and cobalt(II) complexes, respectively.

Keywords : Hydroxyproline; paper electrophoresis; stability constants.

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