Elimination of the interfering effects of ligands in the determination of cobalt by atomic absorption spectrometry

Mohamed M.M. El-Defrawy, József Posta, Mihály T. Beck

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Abstract

In atomic absorption spectrometric determinations of cobalt(II) and cobalt(III), the interfering effects of different complex-forming substances can be completely eliminated by addition of excess of cyanide. Cyanide has a double role: first, it forms very stable cyano complexes, so that the cobalt species reaching the flame will normally be independent of the original composition of the solution; secondly, the high excess of cyanide produces favourable physical and chemical conditions for cobalt atomization.

Original languageEnglish
Pages (from-to)155-161
Number of pages7
JournalAnalytica Chimica Acta
Volume115
Issue numberC
DOIs
Publication statusPublished - Mar 15 1980

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ASJC Scopus subject areas

  • Analytical Chemistry
  • Biochemistry
  • Environmental Chemistry
  • Spectroscopy

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