Flow injection determination of cationic polyelectrolytes using a tetraphenylborate-selective electrode detector

Takashi Masadome, Yasukazu Asano

Research output: Contribution to journalArticle

3 Citations (Scopus)


A potentiometric flow injection determination method for cationic polyelectrolytes utilizing a flow-through-type tetraphenylborate-selective electrode detector is described. The method is based on detecting any concentration decrease of the tetraphenylborate ion by the formation of an ion associate between cationic polyelectrolyte, poly(diallyl-dimethylammonium chloride) (Cat-floc) and tetraphenylborate ion. The response of the electrode detector, as a peak-shaped signal, was obtained for injected cationic polyelectrolyte samples. A linear relationship was found to exist between the peak height and the logarithmic concentration of Cat-floc with a slope of 17 mV/decade over a concentration range of 5 × 10-5 to 1 × 10-3 mol 1-1 . The detection limit for Cat-floc was 1 × 10-5 mol 1-1. The sampling rate was ca. 12 samples/h.

Original languageEnglish
Pages (from-to)515-518
Number of pages4
JournalBunseki Kagaku
Issue number5
Publication statusPublished - 1999
Externally publishedYes



  • Cationic polyelectrolytes
  • Flow injection analysis
  • Ion associate
  • Plasticized poly(vinyl chloride) membrane
  • Tetraphenylborate-selective electrode

ASJC Scopus subject areas

  • Analytical Chemistry

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