Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 40491
Title Voltammetric metal speciation in colloidal latex dispersions.
Author(s) Wonders, J.H.A.M.; Leeuwen, H.P. van
Source Electrochimica Acta 43 (1998). - ISSN 0013-4686 - p. 3401 - 3412.
Department(s) Physical Chemistry and Colloid Science
Publication type Refereed Article in a scientific journal
Publication year 1998
Abstract Two types of polystyrene latices, one with surface carboxylic groups and the other covered with a polymer shell containing carboxylic and sulphonic groups, were analyzed in terms of their metal ion binding properties. In-situ voltammetric experiments were carried out for zinc(II), cadmium(II) and lead(II) to characterize the thermodynamics and kinetics of their association with the surface groups in the latex particles. The kinetics were investigated experimentally through the time-scale dependencies, and set against theoretical predictions [De Jong, H. G. and Van Leeuwen, H. P., J. Electroanal. Chem., 1987, 234, 17; De Jong, H. G. and Van Leeuwen, H. P., J. Electroanal. Chem., 1987, 235, 1] on the basis of rigorous lability criteria and elementary complex formation rate constants. The core-shell latices appear to form relatively weak and labile complexes. In the case of highly charged latices, the metal/carboxylate surface complexes are stronger and lose lability at a high degree of dissociation.
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