Calibration of bromide ion-selective electrodes

R. Gyenge, K. Tóth, E. Pungor, E. Kõrös

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

A method based on the coulometric principle is reported for the calibration of bromide-selective electrodes. Known amounts of bromide are generated coulometrically by cathodic polarization of a silver-silver bromide electrode at a constant current. With this method, the ion-selective electrodes can be calibrated in potentiometric cells with and without transference in the concentration range 10-4-10-7 M. In cells without transference, a PVC nitrate or perchlorate electrode is applied as reference electrode for the calibration in the presence of potassium nitrate or sodium perchlorate background electrolytes. Cells without transference are very advantageous in strongly acidic or basic solutions, where the value of the liquid-junction potential can be significant.

Original languageEnglish
Pages (from-to)111-117
Number of pages7
JournalAnalytica Chimica Acta
Volume94
Issue number1
DOIs
Publication statusPublished - Nov 1 1977

ASJC Scopus subject areas

  • Analytical Chemistry
  • Biochemistry
  • Environmental Chemistry
  • Spectroscopy

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