Application of an iodide ion-selective electrode to the determination of anionic polyelectrolytes and colloids with a cationic surfactant

The analytical application of an iodide solid-state ion-selective electrode is described for the titration, in the low mg 1−1 range, of polyanions with hexadecylbenzyldimethylammonium chloride, a cationic surfactant. Reliable calibration graphs were obtained at concentrations up to 10 mg 1−1. The fe...

Full description

Saved in:
Bibliographic Details
Published in:Analytica chimica acta 1993-09, Vol.281 (2), p.341-346
Main Authors: Séquaris, J.-M., Kalabokas, P.
Format: Article
Language:English
Subjects:
Analytical chemistry
Chemistry
Colloids
Electrochemical methods
Exact sciences and technology
Humic acids
Iodide
Ion selective electrodes
Polyelectrolytes
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The analytical application of an iodide solid-state ion-selective electrode is described for the titration, in the low mg 1−1 range, of polyanions with hexadecylbenzyldimethylammonium chloride, a cationic surfactant. Reliable calibration graphs were obtained at concentrations up to 10 mg 1−1. The feasibility of the titration method for determining the charge density of natural colloids such as humic acids and clays is also shown. The effects of surfactant concentrations of up to 30 mg 1−1 on the polyanion titration show that anionic sufactants are co-titrated.
ISSN:0003-2670
1873-4324
DOI:10.1016/0003-2670(93)85191-L