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Related Experiment Videos

Stationary phases for capillary electrochromatography.

M Pursch1, L C Sander

  • 1Analytical Chemistry Division, Chemical Science and Technology Laboratory, National Institute of Standards and Technology (NIST), Gaithersburg, MD 20899-8392, USA. mpursch@dow.com

Journal of Chromatography. A
|August 29, 2000
PubMed
Summary
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This review explores diverse stationary phases for capillary electrochromatography (CEC), highlighting novel materials beyond C18 phases. New developments focus on enhancing electroosmotic flow and selectivity for challenging separations.

Area of Science:

  • Analytical Chemistry
  • Separation Science

Background:

  • Capillary electrochromatography (CEC) is a powerful separation technique.
  • Traditional CEC often relies on C18 stationary phases adapted from liquid chromatography.

Purpose of the Study:

  • To review and summarize the diverse stationary phases used in CEC.
  • To discuss novel materials and column designs for improved CEC performance.

Main Methods:

  • Literature review of reported CEC stationary phases and column designs.
  • Analysis of material properties influencing electroosmotic flow and selectivity.

Main Results:

  • C18 stationary phases are dominant (approx. 70%) but new materials are emerging.
  • Novel phases include ion-exchange, sol-gel, and organic polymer continuous beds.

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  • New column designs like polymer continuous beds and silica-sol-gel monoliths are presented.

    • Conclusions:

    • A growing variety of stationary phases are being developed for CEC.
    • These novel materials offer enhanced capabilities for electroosmotic flow and selectivity, particularly for basic solutes.