Amperometric air gap cell for the measurement of free cyanide

Anita Nagy, Géza Nagy

Research output: Contribution to journalArticle

10 Citations (Scopus)


A simple air gap cell is described for the determination of the free cyanide content of sample solutions. The cell contains a micro-sized silver disc working electrode. It employs amperometric detection of the cyanide at 0.0 V vs. a 0.1 M silver/silver chloride reference chloride reference electrode. The three-electrode assembly necessary for detection is located on the flat surface of a probe that is coated by a basis measuring film. The cyanide content of the sample is liberated by the addition of tartaric acid. The hydrogen cyanide gas diffusing through the air gap is accumulated in the measuring film. Owing to the working principle, cyanide concentrations as low as a few ν1-1 can be measured. The effect of interfering species was also studied.

Original languageEnglish
Pages (from-to)795-802
Number of pages8
JournalAnalytica Chimica Acta
Issue number2
Publication statusPublished - Nov 26 1993


  • Amperometry
  • Cyanide

ASJC Scopus subject areas

  • Analytical Chemistry
  • Biochemistry
  • Environmental Chemistry
  • Spectroscopy

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