Chromatographia

, Volume 56, Issue 11–12, pp 723–728 | Cite as

Speciation of sulfur-containing anions by use of capillary electrophoresis

  • E. Pobozy
  • M. Jarczynska
  • M. Trojanowicz
Originals Electrophoresis

Summary

Optimization of a CE method with indirect UV detection for speciation of sulfur-containing anions is described. Sensitivity, selectivity, and separation using a chromate background electrolyte (the electrolyte most often used for inorganic anions) and a pyromellitate electrolyte are compared. The pyromellitate electrolyte is recommended because its use results in better sensitivity for the ions analyzed. The composition of the electrolyte was 2.25 mM pyromellitic acid, 6.5 mM NaOH, 0.75 mM hexamethonium hydroxide, and 1.6mM triethanolamine, pH 10. Separation of seven sulfur-containing anions with indirect detection at 254 nm was achieved in one run in less than 7 min.

Key Words

Capillary electrophoresis Speciation Sulfur-containing anions 

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Copyright information

© Friedr. Vieweg & Sohn Verlagsgesellschaft mbH 2002

Authors and Affiliations

  • E. Pobozy
    • 1
  • M. Jarczynska
    • 1
  • M. Trojanowicz
    • 1
    • 2
  1. 1.Department of ChemistryUniversity of WarsawWarsawPoland
  2. 2.Institute of Nuclear Chemistry and TechnologyWarsawPoland

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