✦ LIBER ✦
Application of an iodide ion-selective electrode to the determination of anionic polyelectrolytes and colloids with a cationic surfactant
✍ Scribed by J.-M. Séquaris; P. Kalabokas
- Publisher
- Elsevier Science
- Year
- 1993
- Tongue
- English
- Weight
- 552 KB
- Volume
- 281
- Category
- Article
- ISSN
- 0003-2670
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✦ Synopsis
The analytical application of an iodide solid-state ion-selective electrode is described for the titration, in the low mg 1-i range, of polyanions with hexadecylbenzyldimethylammonium chloride, a cationic surfactant. Reliable calibration graphs were obtained at concentrations up to 10 mg 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 I-' on the polyanion titration show that anionic surfactants are co-titrated.