On-line Preconcentration on pH Boundary – the Beauty of Capillary Electrophoresis

Authors

  • Jan Petr Department of Analytical Chemistry, Palacký University, Olomouc
  • Vítězslav Maier Department of Analytical Chemistry, Palacký University, Olomouc
  • Joanna Znaleziona Department of Analytical Chemistry, Palacký University, Olomouc
  • Kateřina Vítková Department of Analytical Chemistry, Palacký University, Olomouc
  • Václav Ranc Department of Analytical Chemistry, Palacký University, Olomouc
  • Juraj Ševčík Department of Analytical Chemistry, Palacký University, Olomouc

Keywords:

capillary electrophoresis, preconcentration, phenolic acids

Abstract

The beauty of capillary electrophoresis is shown on preconcentration of some phenolics. The method is based on the electrokinetic injection of phenolics into a sodium borate electrolyte (pH 9.5) at the pH boundary formed by sodium phosphate (pH 2.5) followed by mobilization and separation by replacing the injection vial with the vial containing micellar environment. This technique allows determination of nanomolar concentrations of phenolics.

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Published

2009-08-15

How to Cite

Petr, J., Maier, V., Znaleziona, J., Vítková, K., Ranc, V., & Ševčík, J. (2009). On-line Preconcentration on pH Boundary – the Beauty of Capillary Electrophoresis. Chemické Listy, 103(8), 661–666. Retrieved from http://www-.chemicke-listy.cz/ojs3/index.php/chemicke-listy/article/view/4361

Issue

Vol. 103 No. 8 (2009)

Section

Articles

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