Potentiometric titration of anionic polyelectrolytes using a cationic surfactant solution as a titrant and a titrant-sensitive plasticized poly(vinyl chloride) membrane electrode

Takashi Masadome, Toshihiko Imato

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

A potentiometric titration method for the direct determination of anionic polyelectrolytes using a plasticized poly(vinyl chloride) membrane electrode is described. A cationic surfactant solution is used as titrant. The method is based on ion association between the anionic polyelectrolyte in the sample and the cationic surfactant in the titrant. The end-point is detected as a sharp potential change due to an increase in the concentration of the free cationic surfactant at the equivalence point. The sharpness of the titration curve at the end-point is compared for several cationic surfactants; a solution of stearyltrimethylammonium ion has been found to be superior.

Original languageEnglish
Pages (from-to)538-540
Number of pages3
JournalFresenius' Journal of Analytical Chemistry
Volume358
Issue number4
DOIs
Publication statusPublished - 1997 Jan 1

ASJC Scopus subject areas

  • Biochemistry

Fingerprint Dive into the research topics of 'Potentiometric titration of anionic polyelectrolytes using a cationic surfactant solution as a titrant and a titrant-sensitive plasticized poly(vinyl chloride) membrane electrode'. Together they form a unique fingerprint.

  • Cite this