Calculation of stability constants from potentiometric data by desk computers. A simplified approach

A convenient approach for calculating overall stepwise formation constants from ligand concentration and potentiometric measurements of free metal ion concentration is proposed. A weighting factor is used in order to level all dependent terms of simultaneous equations to a common magnitude, in agree...

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Bibliographic Details
Published in:Journal of electroanalytical chemistry and interfacial electrochemistry 1984-01, Vol.179 (1), p.91-98
Main Authors: Neves, Eduardo F.A., Gutz, Ivano G.R., Tavares, Ruth G.
Format: Article
Language:English
Subjects:
Chemistry
Coordination compounds
Exact sciences and technology
Inorganic chemistry and origins of life
Preparations and properties
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Summary:A convenient approach for calculating overall stepwise formation constants from ligand concentration and potentiometric measurements of free metal ion concentration is proposed. A weighting factor is used in order to level all dependent terms of simultaneous equations to a common magnitude, in agreement with the constant error expected in the potentiometric measurements. Programmable calculators can be used in the simplified method. A more complete and flexible program was developed for desk computers for the matrix solution on a least squares basis, free ligand correction, data exclusions and estimation of precision.
ISSN:0022-0728
DOI:10.1016/S0022-0728(84)80278-8