Chromatographia

, Volume 32, Issue 11–12, pp 543–545 | Cite as

Purity of carbon dioxide as limiting factor in trace-level analysis by on-line supercritical fluid extraction/capillary gas chromatography

  • M. W. F. Nielen
  • J. A. Stäb
  • H. Lingeman
  • U. A. Th. Brinkman
Originals

Summary

The usefulness of several grades of carbon dioxide for online supercritical fluid extraction/capillary gas chromatography has been studied. If trace-level work has to be performed, no single grade can be recommended for all modes of detection studied. Good-quality carbon dioxide is available for use with flame ionization and thermionic detectors. With electron-capture detection, however, distinct problems still exist.

Key Words

Gas chromatography Supercritical fluid extraction GC detectors Purity of gases 

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Copyright information

© Friedr. Vieweg & Sohn Verlagsgesellschaft mbH 1991

Authors and Affiliations

  • M. W. F. Nielen
    • 1
  • J. A. Stäb
    • 2
  • H. Lingeman
    • 2
  • U. A. Th. Brinkman
    • 2
  1. 1.Department of Analytical ChemistryMT-TNODelftThe Netherlands
  2. 2.Deparment of Analytical ChemistryFree UniversityAmsterdamThe Netherlands

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