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Application of electrophoresis technique for evaluating stability constant of ternary complexes

Journal Article · · Journal of the Electrochemical Society; (United States)
DOI:https://doi.org/10.1149/1.2056133· OSTI ID:6444297
 [1]
  1. Univ. of Allahabad (India)
A method involving the use of paper electrophoresis is described for the study of equilibria in mixed ligand complex systems in solution. This method is based on the development of a spot by migration of a metal ion, with the complexants added in the background electrolyte (0.1 M perchloric acid). For the study of ternary complexes, the concentration of adenosine monophosphate (AMP) is kept constant, while that of a second ligand nitrilotriacetate (NTA) is varied. A graph of mobility against [minus]log [NTA] is used to obtain information on the formation of mixed ligand complexes and to calculate the stability constants. The overall stability constants of complexes of M-AMP and M - AMP - NTA system have been found to be 10[sup 2.8], 10[sup 8.2] for Zn(II) and 10[sup 2.9], 10[sup 8.5] for Ni(II) complexes, respectively, at 30 C and [mu] = 0.1.
OSTI ID:
6444297
Journal Information:
Journal of the Electrochemical Society; (United States), Journal Name: Journal of the Electrochemical Society; (United States) Vol. 140:3; ISSN 0013-4651; ISSN JESOAN
Country of Publication:
United States
Language:
English