Ion mobility spectrometer comprising two drift chambers

G - Physics – 01 – N

Patent

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Details

IPC codes

G01N 27/64 (2006.01)

Type

Patent

Patent number

CA 2679895

Description

An ion mobility spectrometer has two drift chambers (11) and (12) and a common, doped reaction region (2). Each drift chamber includes an ion modifier (14) and (24), such as one that fragments the doped ions by a high electrical field. One of the drift chambers (11) is doped and the other (12) is undoped. In this way, the dopant adducts are removed by the modification process bµt then recombine with dopant only in the doped chamber.(11) so that different outputs are produced by the two drift chambers.

L'invention concerne un spectromètre de mobilité ionique qui a deux chambres à dérive (11) et (12) et une région de réaction dopée commune (2). Chaque chambre à dérive comprend un modificateur d'ions (14) et (24), tels qu'un modificateur qui fragmente les ions dopés par un champ électrique élevé. L'une des chambres à dérive (11) est dopée et l'autre (12) n'est pas dopée. De cette façon, les adduits dopants sont éliminés par le procédé de modification, mais ensuite recombinés avec un dopant uniquement dans la chambre dopée (11), de telle sorte que différentes sorties sont produites par les deux chambres à dérive.

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