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GAS CHROMATOGRAM [2 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2011-05-31

English

Subject field(s)
  • Analytical Chemistry
DEF

A procedure for chromatographic separation in which the mobile phase is passed through the chromatographic bed after the application on the sample.

OBS

The mixture is applied at the head of the column or as a spot on paper and thin layer. On the chromatogram thus developed, the solutes give either separate spots as in paper chromatography and thin-layer chromatography or a series of peaks on a chart as in gas chromatography and high-performance liquid chromatography.

French

Domaine(s)
  • Chimie analytique
DEF

Méthode de séparation chromatographique dans laquelle un éluant percole à travers le lit chromatographique après introduction de l'échantillon.

CONT

Que ce soit sur papier ou sur couche mince, on peut opérer les séparations suivant deux dimensions (axes de migration rectangulaires), mais la chromatographie sur couche mince est susceptible de variantes basées sur l'effet d'un gradient de composition du substrat (chromatographie à gradient d'élution), et même sur l'introduction de pressions assez importantes pour faire cheminer le véhicule liquide.

Spanish

Campo(s) temático(s)
  • Química analítica
DEF

Cromatografía en la que se hace pasar un eluyente a través de la fase estacionaria, después de haber introducido en ella la mezcla que se va a separar.

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Record 2 2009-06-11

English

Subject field(s)
  • Analytical Chemistry
DEF

The time equivalent to dwell volume [that is] determined by the product of flow rate and the dwell volume.

CONT

Gas chromatogram/spectrometer(GC/MS) interface : transfer line 220°C. Mass spectrometer parameters manually tuned with perfluorotributylamine and optimised for a lower mass sensitivity, SIM acquisition mode, solvent delay and acquisition start time 22 minutes, dwell time/ion 100 ms.

French

Domaine(s)
  • Chimie analytique
CONT

Chromatographe en phase gazeuse/spectromètre (CG/SM) interface : ligne de transfert 220 °C. Paramètres du spectromètre de masse mis au point manuellement avec de la perfluorotributylamine et optimisé pour une sensibilité de masse plus basse, mode acquisition SIM, délai solvant et temps de commencement de l'acquisition 22 minutes, temps de maintien/ion 100 ms.

Spanish

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