Capillary electrophoresis mass spectometry interface

Details Capillary electrophoresis mass spectometry interface Capillary electrophoresis mass spectometry interface

G - Physics

01

N

G01N 27/447 (2006.01) B05B 7/04 (2006.01) H01J 49/04 (2006.01)

Patent

CA 2483493

A device for connecting a capillary (5) for capillary electrophoresis (CE) to an ionisation source (11) in an apparatus for mass spectrometry (MS) (12) is described, the device comprising a chamber (7) for an electrolyte, which chamber (7) has a first inlet (17) for the capillary (5) and a second inlet (16) for the electrolyte from a reservoir (8) and an outlet (17) for the capillary (5), where a tubular electrode (10) through which the capillary is passed, is arranged in connection to the outlet (17), and through which electrode (10) the electrolyte may flow around the capillary (5), wherein a flow chamber (31, 36) is arranged upstream for the electrode (10) in which flow chamber (31, 36) an electrically conducting surface electrically connected to the electrode (10), is arranged. Additionally, a system for analysis comprising said device for connecting is described.

L'invention concerne un dispositif servant à connecter un tube capillaire (5) d'électrophorèse capillaire (EC) à une source d'ionisation (11) dans un appareil de spectrométrie de masse (SM) (12). Ce dispositif comprend une chambre (7) destinée à un électrolyte, cette chambre (7) comportant une première entrée (15) pour le tube capillaire (5) et une seconde entrée (16) pour l'électrolyte, ce dernier provenant d'un réservoir (8), ainsi qu'une sortie (17) pour le tube capillaire (5). A cette sortie (17) est raccordée une électrode tubulaire (10) à travers laquelle passe le tube capillaire (5) et à travers laquelle peut circuler l'électrolyte autour du tube capillaire (5). Une chambre d'écoulement (31, 36) est disposée en amont de l'électrode (10), cette chambre comprenant une surface électriquement conductrice connectée électriquement à ladite électrode (10). L'invention concerne également un système d'analyse comprenant ce dispositif de connexion.

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