Super-critical fluid mass spectrometer

Details Super-critical fluid mass spectrometer Super-critical fluid mass spectrometer

1988-07-07

1990-07-17

Anderson, Bruce C.

Radiant energy

Ionic separation or analysis

With sample supply means

250282, 250423R, H01J 4926

Patent

active

049422960

ABSTRACT:
The invention provides a mass spectrometer for the analysis of a sample dissolved in a super-critical fluid. The fluid is expanded directly into an ionization chamber without a liquid-gas transition and the sample is ionized by means of a glow discharge established in the chamber. Preferably the electrodes between which the discharge is struck comprise the wall of the ionization chamber and the tube through which the super-critical fluid enters the chamber. The spectrometer is primarily intended for use with a super-critical fluid chromatograph.

REFERENCES:
patent: 4479380 (1984-10-01), Novotny
patent: 4647772 (1987-03-01), Lewis
patent: 4794252 (1988-12-01), Bateman

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