Capillary electrophoretic determination of mercury compounds in different matrixes

A. Gáspár, Cs Páger

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

Capillary electrophoresis has been used to separate inorganic (Hg2+) and organic (methyl-, ethyl-, and phenylmercury) mercury compounds as their cysteine complexes. The optimized electrophoretic separation was performed in fused-silica capillary tubing at 25 kV with 25 mM sodium borate buffer (pH 9.3). Identification and quantification of the mercury species at mg L-1 levels was achieved by use of UV detection at 200 nm. The relative standard deviation (n - 10) ranged from 0.38 to 0.51% for migration times and from 0.43 to 2.94% for corrected peak areas. Good recovery (>90%) was obtained for all four mercury species in surface waters, and for inorganic mercury and methylmercury in five- to tenfold diluted biofluids (urine, saliva, and cerebrospinal fluid). The LOQ values obtained were too high to be useful for determination of mercury species in real samples.

Original languageEnglish
Pages (from-to)S115-S120
JournalChromatographia
Volume56
Issue numberSUPPL.
DOIs
Publication statusPublished - Jan 1 2002

Keywords

  • Capillary electrophoresis
  • Mercury speciation

ASJC Scopus subject areas

  • Analytical Chemistry
  • Biochemistry
  • Clinical Biochemistry
  • Organic Chemistry

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