Possibilities of determination of mercury compounds using capillary zone electrophoresis

Cs Páger, A. Gáspár

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

Capillary zone electrophoresis (CZE) has been used to separate inorganic (Hg2+) and organic mercury (methyl-, ethyl- and phenylmercury) compounds. In order to achieve the proper CZE separation and UV detection of mercury compounds, their different complexes had to be formed. The advantages of four different complexing agents having thiol group (cysteine, glutathione, 2-mercaptonicotinic acid and mercaptoacetic acid) were studied. In the case of all four agents the optimized electrophoretic separation was achieved in fused silica capillary at 25 kV using 25 mM sodium borate buffer (pH 9.3). Identification and quantification of the mercury species at mg/l levels was carried out by the use of UV spectrophotometric detection at 200, 260 and 300 nm depending on the used complexing agent.

Original languageEnglish
Pages (from-to)53-58
Number of pages6
JournalMicrochemical Journal
Volume73
Issue number1-2
DOIs
Publication statusPublished - Oct 1 2002

Keywords

  • Capillary zone electrophoresis
  • Mercury compounds
  • Thiol group

ASJC Scopus subject areas

  • Analytical Chemistry
  • Spectroscopy

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