Flow-injection potentiometry for the assay of potassium in biological fluids

Judit Jeney, Klára Tóth, Brno Lindner, Erno Pungor

Research output: Contribution to journalArticle

14 Citations (Scopus)


The performance characteristics (selectivity, slope of the electrode response, response time) of polyvinyl chloride and modified polyvinyl chloride based solvent polymeric, potassium selective membrane electrodes were evaluated in relevance to the analysis of ionic constituents in biological samples. A flow-injection system incorporating a macro wall-jet potentiometric detector was designed and its utility for the potassium assay in undiluted urine samples was evaluated. Analytical data obtained by flow methods for the potassium content of patients' blood serum and urine samples had been correlated with flame atomic emission spectrometric data.

Original languageEnglish
Pages (from-to)232-247
Number of pages16
JournalMicrochemical Journal
Issue number2
Publication statusPublished - Apr 1992

ASJC Scopus subject areas

  • Analytical Chemistry
  • Spectroscopy

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