Replaceable emitter assembly for interfacing a separation column to a mass spectrometer
AssigneesThermo Hypersil-Keystone LLC, Dionex Corporation
InventorsBrandon Howard ROBSON, Xuefei SUN, Xiaodong LIU
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Abstract
An electrospray emitter assembly for interfacing a separation column to a mass spectrometer is disclosed. An emitter capillary includes an inlet end and an outlet end. A fitting is coupled to the inlet end of the emitter, configured to be removably connected to the separation column A stop with a defined through hole is integrated proximate the inlet end of the emitter to produce a path for liquid to flow from the separation column to the emitter via the through hole where a voltage is applied to the liquid entering the emitter.
Claims1
An electrospray emitter assembly for interfacing a separation column to a mass spectrometer, comprising:
- a. an emitter capillary having an inlet end and an outlet end;
- and
- b. an electrically conductive sheath having a recess in the form of a circumferential groove for receiving a contact ball to make a high voltage contact;
- c. a union coupled to the inlet end of the emitter, configured to be removably connected to the separation column, the union electrically coupled to the electrically conductive sheath, the union including a stop with a defined through hole integrated proximate the inlet end of the emitter to produce a path for liquid to flow from the separation column to the emitter via the through hole where a voltage is applied to the liquid entering the emitter;
- and
- d. a protective sleeve slidably mounted around the emitter for covering and supporting the emitter.
Dependencies are inferred from the claim text.