Method for separation of molecules

G - Physics – 01 – N

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G01N 27/62 (2006.01) H01J 49/26 (2006.01)

Patent

CA 2650240

A method for separating molecules, such as enantiomers, other stereoisomers and constitutional isomers by ion mobility spectrometry (IMS). Molecules of interest are ionised after addition of a suitable chiral reference compound, resulting in the formation of cluster ions that can be separated by IMS techniques such as ion drift mobility (IDM) spectrometry or FAIMS. This method allows, for example, for fast and sensitive quantification of one enantiomer in presence of an excess of the other enantiomer.

L'invention concerne un procédé de séparation de molécules, telles que des énantiomères, d'autres stéréoisomères et des isomères constitutifs, par spectrométrie de mobilitié ionique (" ion mobility spectrometry" ou IMS). Selon l'invention, on ionise des molécules d'intérêt après adjonction d'un composé de référence chiral adéquat, provoquant la formation d'ions en grappes pouvant être séparés par des procédés IMS tels que la spectrométrie de mobilité de dérive ionique (" ion drift mobility" ou IDM) ou la FAIMS. Le procédé de l'invention permet, par exemple, une quantification rapide et sensible d'un énantiomère en présence d'un excès de l'autre énantiomère.

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