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South African Journal of Chemistry

On-line version ISSN 1996-840X
Print version ISSN 0379-4350

S.Afr.j.chem. (Online) vol.63  Durban  2010

 

RESEARCH ARTICLE

 

Interaction of hydroxyproline with bivalent metal ions in chemical and biological systems

 

 

Brij B. Tewari*

Department of Chemistry, Faculty of Natural Sciences, University of Guyana, P. O. Box 101110, Georgetown, Guyana

 

 


ABSTRACT

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


 

 

Full text available only in PDF format.

 

 

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Received 18 June 2009
Revised 18 July 2010
Accepted 17 October 2010

 

 

* E-mail: brijtew@yahoo.com

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