Neutral carrier potassium-selective electrodes with low resistances

Timothy A. Nieman, George Horvai

Research output: Contribution to journalArticle

49 Citations (Scopus)


Valinomycin-based electrodes for potassium are described which have resistances as low as 5 kΩ. Addition of a mixture of tetraphenylborate and a quaternary ammonium salt lowers the resistance to 1-3% of that without the additive. The electrode retains high selectivity for K+ over Na+ even in the presence of a large excess of the tetraphenylborate additive over the carrier.

Original languageEnglish
Pages (from-to)359-363
Number of pages5
JournalAnalytica Chimica Acta
Issue numberC
Publication statusPublished - 1985

ASJC Scopus subject areas

  • Analytical Chemistry
  • Biochemistry
  • Environmental Chemistry
  • Spectroscopy

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