Interface between liquid flow and mass spectrometer

Details Interface between liquid flow and mass spectrometer Interface between liquid flow and mass spectrometer

1997-02-07

1999-06-29

Nguyen, Kiet T.

Radiant energy

Ionic separation or analysis

With sample supply means

H01J 4910

Patent

active

059171847

ABSTRACT:
An interface apparatus for introducing a sample for analysis from a liquid flow into a mass spectrometer as a plurality of charged droplets is disclosed. The interface apparatus includes interface body which defines a spray chamber and an orifice, a spray means defining a liquid-flow inlet channel and an excess-sample-flow exit channel and having an open end disposed inside the spray chamber, and a voltage device for applying a voltage to the sample to form a plurality of charged droplets. The charged droplets pass through the orifice in the interface body and are introduced into a mass spectrometer for analysis. The interface includes a valve for regulating the flow of sample into the sample inlet channel and a device for imposing a pressure gradient on the sample at the open end which induces the sample to flow from the sample inlet channel through the excess sample outlet channel.

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