Stripping voltammetry of zinc/polyacrylate complexes: Influence of molar mass

1 January 1991

journal article
Published by Institute of Organic Chemistry & Biochemistry in Collection of Czechoslovak Chemical Communications

Vol. 56 (1) , 96-103
https://doi.org/10.1135/cccc19910096

Abstract

Differential pulse anodic stripping voltammetry (DPASV) has been applied to complex systems of zinc(II) and polyacrylic acid (PAA) for various molar masses of the polyacid. The Zn/PAA complex is voltammetrically labile over the whole range of metal-to-ligand ratios. Analysis of the data in terms of a mean diffusion coefficient, which decreases with increasing molecular mass, yields a consistent picture with molar mass-independent complex stabilities. The speciation of Zn(II) in such a polyelectrolyte system varies with the concentration of carboxylate groups and with the overall charge of the PAA, but it is invariant with the polyionic molar mass.

Keywords

This publication has 0 references indexed in Scilit: