title: Formation constants of some mercury(II) complexes determined from their anodic polarographic signals.
abstract: The formation constants of some Hg(II) complexes have been determined from the anodic polarographic signals for the oxidation of mercury in the presence of the following ligands: thiourea and its phenyl- and diphenyl-derivatives, thiocyanate, ethylenediamine, EDTA, methylthioacetic acid, 2,2'-thiobisacetic acid, 3,3'-thiobispropanoic acid, 2,2'-[1,1-methandiylbis(thio)]bisacetic acid and 2,2'-[1,2-ethandiylbis(thio)]bisacetic acid. The use of differential pulse polarography and a.c. polarography instead of d.c. polarography increases the accuracy and precision of the potential measurements and, as a consequence, of the stability constants determined. The results obtained by the different methods are compared.
authors.affiliation: Departament de Química Analítica, Facultat de Química, Universitat de Barcelona, Av. Diagonal 647, 08028 Barcelona, Spain.
authors.forename: M
authors.initials: M
authors.lastname: Esteban
authors.forename: E
authors.initials: E
authors.lastname: Casassas
authors.forename: L
authors.initials: L
authors.lastname: Fernandez