The surface morphology of ion-selective membrane electrodes. Part 3. Studies on the Lead Ion-selective Membrane

E. Pungor, K. Tóth, G. Nagy, L. Pólos, M. F. Ebel, I. Wernisch

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

Studies of the changes in the surface state of the ion-selective membrane and in the performance of the silver sulphide-lead sulphide (2:1) precipitate-based electrode are described. A scanning electron microscope was used to examine the surface of the electrode membrane. The results indicate that passivation of the lead-selective electrode caused by chemical and electrochemical oxidation is due to transformation of the lead sulphide at the membrane surface. The electrode surface becomes depleted in lead sulphide; lead sulphate crystals are formed during chemical oxidation with hydrogen peroxide, and lead oxide crystals during anodic oxidation.

Original languageEnglish
Pages (from-to)23-32
Number of pages10
JournalAnalytica Chimica Acta
Volume147
Issue numberC
DOIs
Publication statusPublished - 1983

Fingerprint

Ion selective membranes
Ion-Selective Electrodes
Surface morphology
Electrodes
electrode
Ions
membrane
Membranes
sulfide
ion
oxidation
Crystals
Electrochemical oxidation
crystal
Anodic oxidation
Surface states
Passivation
Hydrogen Peroxide
Precipitates
Electron microscopes

ASJC Scopus subject areas

  • Biochemistry
  • Analytical Chemistry
  • Spectroscopy
  • Environmental Chemistry

Cite this

The surface morphology of ion-selective membrane electrodes. Part 3. Studies on the Lead Ion-selective Membrane. / Pungor, E.; Tóth, K.; Nagy, G.; Pólos, L.; Ebel, M. F.; Wernisch, I.

In: Analytica Chimica Acta, Vol. 147, No. C, 1983, p. 23-32.

Research output: Contribution to journalArticle

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AU - Ebel, M. F.

AU - Wernisch, I.

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