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

研究成果: Article査読

4 被引用数 (Scopus)

抄録

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.

本文言語English
ページ(範囲)538-540
ページ数3
ジャーナルFresenius' Journal of Analytical Chemistry
358
4
DOI
出版ステータスPublished - 1997
外部発表はい

ASJC Scopus subject areas

  • 生化学

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