Resumo

TEWARI, Brij B. STUDIES ON MERCURY(II), NICKEL(II) AND LEAD(II) BIOLOGICALLY IMPORTANT BINARY COMPLEXES WITH NORVALINE IN SOLUTION. Rev. Bol. Quim [online]. 2011, vol.28, n.1, pp.14-21. ISSN 0250-5460.

ABSTRACT   A recent technique involving the use of paper electrophoresis is described for the study of equilibria in binary complex systems in solution.  This method is based on movement of a spot of metal ion in an electric field at various pHs of background electrolyte.  A graph of pH versus mobility give the information for binary complexes and to calculate stability constants.  The logarithm stability constants of the ML and ML₂ complexes of norvaline were found to be (8.61 ± 0.03; 7.05 ± 0.07), (6.93 ± 0.05; 5.47 ± 0.03) and (4.57 ± 0.02; 3.00 ± 0.05) for the mercury(II), nickel(II) and lead(II) complexes, respectively at ionic strength 0.1 M perchloric acid and a temperature of 35 ° C

Palavras-chave : Electrophoretic technique; mercury(II) complexes; nickel(II) complexes; lead(II) complexes; norvaline; stability  constant.

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