Analyte pre-concentrator for gas chromatography

B - Operations – Transporting – 01 – D

Patent

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B01D 15/12 (2006.01)

Patent

CA 2614663

An analyte pre-concentrator for gas chromatography is disclosed generally comprising a tube having a restricted outlet and packed with an absorbent, wherein the tube serves as the liner of a chromatographic injector, as an adsorbent trap coupled to a chromatographic column, and/or as an adsorbent trap coupled to a headspace sampler. Preferably, a heating device allows the tube to be heated. In a preferred embodiment, the analyte pre-concentrator further comprises a column isolating accessory so that a chromatographic column can be temporarily isolated from substances flowing through the tube.

L'invention porte sur un pré-concentrateur d'analyte pour chromatographie en phase gazeuse, qui comprend généralement un tube pourvu d'un orifice d'évacuation restreint et conditionné avec un absorbant. Ce tube est utilisé comme contenant d'un injecteur chromatographique, comme piège d'adsorbant couplé à une colonne chromatographique et/ou comme piège d'adsorbant couplé à un injecteur d'échantillon. De préférence, un dispositif chauffant permet de chauffer le tube. Selon un mode d'exécution préféré, le pré-concentrateur d'analyte comprend également un accessoire isolant la colonne de façon à pouvoir isoler provisoirement la colonne chromatographique des substances s'écoulant dans le tube. .

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