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Chromatographia

, Volume 46, Issue 1–2, pp 67–71 | Cite as

Analysis of some anhydrides as their corresponding acids by capillary electrophoresis

  • Y. He
  • H. K. Lee
Originals

Summary

The potential of capillary electrophoresis for the indirect determination of anhydrides was demonstrated by the analysis of five closely-related anhydrides as their corresponding acids. Direct analysis of such substances is generally difficult because of their susceptibility to hydrolysis. In this work anhydrides were first hydrolyzed in water, hydrolysis being monitored using micellar electrokinetic chromatography (MEKC) which separated neutral anhydrides and anions of corresponding acids. After hydrolysis, separation of the acids was quickly achieved within two minutes by reversed electroosmotic-flow, capillary electrophoresis (REF-CE), with UV detection at 210 nm.

Key Words

Capillary electrophoresis Reversed electroosmotic flow Organic acids Anhydrides 

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Copyright information

© Friedr. Vieweg & Sohn Verlagsgesellschaft mbH 1997

Authors and Affiliations

  • Y. He
    • 1
  • H. K. Lee
    • 1
  1. 1.Department of ChemistryNational University of SingaporeKent RidgeRepublic of Singapore

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