Gas chromatography system and methods

G - Physics – 01 – N

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

G01N 30/02 (2006.01) B01D 15/08 (2006.01) G01N 30/40 (2006.01) G01N 30/12 (2006.01)

Patent

CA 2069734

Gas chromatography apparatus (10) and procedures are described which enables gas chromatography to be carried out more rapidly than in accordance with prior art techniques and further enables chromatogram peaks caused by materials of interest from being obscured due to their superposition upon high long duration peaks produced by other components in an organic mixture. A principal aspect of the invention is to cause a reversal in the flow direction through the column (32) to occur at or just after a high intensity long duration peak caused by some components of the mixture have eluted causing the remaining components to be drawn back into a thermal focusing chamber (14) for subsequent reinjection. By stopping the process at this point the concentration of high long duration peak forming materials which have been eluted can be reduced so that subsequent reinjection will reveal features of interest in the chromatogram which would have otherwise been obscured.

On décrit un appareil (10) et des méthodes de chromatographie en phase gazeuse qui permettent de réaliser des analyses par chromatographie en phase gazeuse plus rapidement que les techniques antérieures et qui préviennent également le masquage des pics chromatographiques correspondant à des substances d'intérêt, par superposition de ces pics à des pics intenses et de longue durée correspondant à d'autres constituants d'un mélange organique. L'inversion de la direction du courant dans la colonne (32) au moment de l'élution ou juste après l'élution d'un pic de haute intensité et de longue durée correspondant à certains constituants du mélange, ce qui entraîne le retour dans la chambre de focalisation thermique (14) des constituants qui restent et leur réinjection ultérieure, constitue un aspect principal de l'invention. On peut, en arrêtant le processus à ce point, réduire la concentration des matières donnant un pic intense et de longue durée qui ont éluées, ce qui permet, après réinjection ultérieure, de déceler dans le chromatogramme des caractéristiques d'intérêt qui, autrement, auraient été masquées.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Gas chromatography system and methods does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Gas chromatography system and methods, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gas chromatography system and methods will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1632637

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.