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CROMATOGRAFIA GAS-SOLIDO [1 record]

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Alphabetical list of terms

Record 1 2003-11-07

English

Subject field(s)
  • Analytical Chemistry
DEF

A form of gas chromatography in which the moving phase is a gas and the stationary phase is a surface-active sorbent (charcoal, silica gel, or activated alumina). The separation is achieved by adsorption of the components of a sample.

OBS

The physical states of the mobile and stationary phases give rise to four basic types of chromatography: gas-liquid chromatography (GLC), gas-solid chromatography (GSC), liquid - liquid chromatography (LLC), and liquid-solid chromatography (LSC). Of the four basic types of chromatography, the two gas systems are independent and not subject to subdivisions. Thus the terms "gas-liquid chromatography" and "gas-solid chromatography" adequately identify the techniques involved. The liquid systems are not as easily described and are not mutually exclusive, which can lead to considerable confusion.

Key term(s)
  • gas adsorption chromatography
  • solid gas chromatography

French

Domaine(s)
  • Chimie analytique
DEF

Chromatographie en phase gazeuse dans laquelle la phase fixe est constituée par un adsorbant solide.

OBS

Dans cette définition, le premier mot spécifie la nature de la phase mobile et le second la phase stationnaire. En chromatographie gazeuse, la distinction entre gaz-solide peut paraître obscure : des liquides peuvent être employés pour modifier les phases stationnaires solides et les supports solides utilisés pour retenir les phases stationnaires liquides qui peuvent affecter le processus chromatographique. Dans un classement selon la nature des phases, le terme relatif à l'effet prédominent doit être choisi.

OBS

«Chromatographie gaz-solide» a été normalisé par l'AFNOR.

Key term(s)
  • chromatographie d'adsorption des mélanges gazeux
  • chromatographie gaz solide

Spanish

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

Cromatografía de gases en la que la fase estacionaria es un sólido adsorbente.

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