Voltammetric characterization of Boda Albitic Claystone. Comparison with previous Mössbauer spectroscopy results

Michel Perdicakis, Yuliang Xu, Károly Lazar, Zoltán Mathe, Lise Rouillard

Research output: Contribution to journalArticle

Abstract

We used ‘Voltammetry of MicroParticles’ to investigate electrochemically samples from the Boda Albitic Claystone, a potential site for deep underground disposal of nuclear waste in Hungary. The samples were collected near the surface and at a depth of 1050 m. The electrochemical characterization in acidic media allowed the identification of Fe2+ and Fe3+ ions associated with clays, hematite and pyrite. The cathodic detection of pyrite does not raise special difficulties, but the anodic one is complex and depends on the time of the samples exposure to the atmosphere. This work completes a previous Mössbauer spectroscopy study by clarifying the presence, or absence, of extremely small amounts of pyrite in some samples.

Original languageEnglish
Pages (from-to)54-62
Number of pages9
JournalApplied Geochemistry
Volume75
DOIs
Publication statusPublished - Dec 1 2016

Keywords

  • Boda Albitic Claystone
  • Hematite
  • Pyrite
  • Underground nuclear waste disposal
  • Voltammetry of clays
  • Voltammetry of microparticles

ASJC Scopus subject areas

  • Environmental Chemistry
  • Pollution
  • Geochemistry and Petrology

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