Radiant energy – Ionic separation or analysis – With sample supply means
Patent
1982-02-12
1983-09-06
Smith, Alfred E.
Radiant energy
Ionic separation or analysis
With sample supply means
250281, 73 611C, H01J 4930
Patent
active
044031475
ABSTRACT:
Apparatus is provided for analyzing liquid samples by a mass spectrometer. A stream of liquid droplets of the sample is formed by a probe which expels the droplets into a desolvation chamber. The droplets are evaporated in the desolvation chamber and the evaporated materials injected into the source region of the mass spectrometer. In some preferred embodiments, the system is configured so that no solvent or solute is pumped out of the desolvation chamber during transit; discrimination against highly volatile materials is thereby prevented. The apparatus may be used as an interface between a liquid chromatograph and the mass spectrometer.
REFERENCES:
patent: 3944826 (1976-03-01), Gray
patent: 3997298 (1976-12-01), McLafferty et al.
patent: 4160161 (1979-07-01), Horton
patent: 4209696 (1980-06-01), Fite
patent: 4300044 (1981-11-01), Iribarne et al.
Walisch et al., "Rapid, Continuous Transfer of Liquid Into a Mass Spectrometer", Talanta, 22, pp. 517-521, Pergamon Press, Great Britain, 1975.
Sawdo et al., "Refrigerated Direct Insertion Probe for Mass Spectrometry", Anal. Chem., 48 (4), Apr. 1976, pp. 790-791.
Melera Attilio
Neukermans Armand
Fields Carolyn E.
Fromm Jeffery B.
Grubman Ronald E.
Hewlett--Packard Company
Smith Alfred E.
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