A PC PROGRAM FOR CALCULATION OF THE STABILITY-CONSTANTS OF COMPLEXES MQLPHR FROM PH-METRIC MEASUREMENTS

A least-squares computer program MAXIPOT-F using the nonweighted residuals of emfs has been constructed for calculation of the optimum values of the cumulative stability constants of complexes M(q)L(p)H(r) and/or those of species H(r)L(p) or H(-r)M(q) from pH-metric data. The basic parameters (E0, g, j(H), j(OH) and K(s)) necessary for evaluation can be obtained from blank titration curves. These parameters and the total base concentration of the titrant are also treated as refinable group parameters. The programs, written in FORTRAN programming language, can be run on a PC and easily extended or connected to other programs. Small programs for species-distribution calculation under different experimental conditions are also reported.