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Microemulsion electrokinetic chromatography.

Wolfgang W Buchberger1

  • 1Department of Analytical Chemistry, Johannes Kepler University, Linz, Austria.

Methods in Molecular Biology (Clifton, N.J.)
|April 9, 2008
PubMed
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Microemulsion electrokinetic chromatography (MEEKC) offers versatile separations for charged and neutral analytes using microemulsions as electrolytes. This technique enhances sensitivity and simplifies complex separations for routine use.

Area of Science:

  • Analytical Chemistry
  • Separation Science

Background:

  • Microemulsion electrokinetic chromatography (MEEKC) utilizes microemulsions as carrier electrolytes in capillary electrophoresis.
  • Analytes partition between aqueous and oil phases, acting as pseudostationary phases.

Purpose of the Study:

  • To summarize reliable MEEKC conditions for routine separations.
  • To highlight MEEKC's applicability for both neutral and charged analytes.
  • To present microemulsions for on-capillary analyte preconcentration.

Main Methods:

  • MEEKC employing microemulsions as the mobile phase.
  • Optimization through organic solvent addition or surfactant modification.
  • On-capillary preconcentration strategies.

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Main Results:

  • MEEKC effectively separates a wide range of analytes with a single set of parameters.
  • Separation can be fine-tuned by adjusting microemulsion composition.
  • On-capillary preconcentration overcomes UV detection sensitivity limitations.

Conclusions:

  • MEEKC is a robust and adaptable technique for diverse analyte separations.
  • Microemulsion composition offers flexibility in optimizing separation selectivity.
  • MEEKC enhances sensitivity, making it suitable for routine analysis.