POTENTIOMETRIC TITRATION OF POLY(ACRYLIC ACID) IN MIXED COUNTERION SYSTEMS - CHEMICAL-BINDING OF CD IONS

Authors
BENEGAS JC CLEVEN FMJ VANDENHOOP MAGT
Citation
Jc. Benegas et al., POTENTIOMETRIC TITRATION OF POLY(ACRYLIC ACID) IN MIXED COUNTERION SYSTEMS - CHEMICAL-BINDING OF CD IONS, Analytica chimica acta, 369(1-2), 1998, pp. 109-114
Citations number
16
Categorie Soggetti
Chemistry Analytical
Journal title
Analytica chimica acta → ACNP
ISSN journal
00032670
Volume
369
Issue
1-2
Year of publication
1998
Pages
109 - 114
Database
ISI
SICI code
0003-2670(1998)369:1-2<109:PTOPAI>2.0.ZU;2-8
Abstract
Potentiometric titration curves of various Cd/poly(acrylic acid) syste ms have been obtained in order to study the cadmium poly(acrylic acid) interaction. The experimental data, in terms of pK(a) versus alpha, i s well described by taking into account chemical binding of the cadmiu m ions with the polymer and electrostatically bound potassium counteri ons as calculated by the counterion condensation approach. In this way , the speciation of both divalent and monovalent counterions in soluti on is readily calculated. (C) 1998 Elsevier Science B.V. All rights re served.