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Method for analysis of exhaled air by microwave energy desorption coupled with gas chromatography-flame ionization
W Mueller1, J Schubert, A Benzing
1Department of Anaesthesia and Intensive Care Medicine, University Hospital of Freiburg, Germany.
Journal of Chromatography. B, Biomedical Sciences and Applications
|November 21, 1998
Abstract:
A method for chemical analysis of volatile constituents in exhaled air of mechanically ventilated patients is described. Exhaled substances are adsorbed and concentrated onto activated charcoal, desorbed by microwave energy and transferred into a gas chromatograph for separation without prior cryofocusing. Substances are identified by flame ionisation detection and mass spectrometry. This method yields reproducible results and is well suited for clinical studies.