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Modified Capillary GCMS System Enabling Dynamic Headspace Sampling with On-Line Cryofocusing and Cold On-Column Injection of Liquid Samples

Tipo de material: TextoTextoSeries ; J. High Resolution Chromatography, 20, p.24-28, 1997Trabajos contenidos:
  • Barcarole, R
  • Casson, P
Recursos en línea: Resumen: The paper describes a capillary GC/MS hardware arrangement allowing either: a)on-line injection of sample of gases and vapors coming from dynamic headspace or purge trap samplers and their subsequent cryofocusingkhermal desorption prior to the analytical capillary column (first column); b)direct injection of liquid samples through a cold on-column injector into a second analytical capillary column (mounted in series with the first). Chromatographic profiles of acacia honey aromas provide confirmation of the suitability of this system.
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The paper describes a capillary GC/MS hardware arrangement allowing either: a)on-line injection of sample of gases and vapors coming from dynamic headspace or purge trap samplers and their subsequent cryofocusingkhermal desorption prior to the analytical capillary column (first column); b)direct injection of liquid samples through a cold on-column injector into a second analytical capillary column (mounted in series with the first). Chromatographic profiles of acacia honey aromas provide confirmation of the suitability of this system.

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