Automatic sample system for mass spectrometer

Details Automatic sample system for mass spectrometer Automatic sample system for mass spectrometer

1987-09-04

1989-11-07

Church, Craig E.

Radiant energy

Ionic separation or analysis

With sample supply means

250281, 250425, H01J 4904

Patent

active

048794589

ABSTRACT:
An automated sample inlet system for sequentially introducing a plurality of indium encapsulated samples into a mass spectrometer wherein the samples are placed in a micro tube and loaded into a circular carousel under a vacuum bell jar maintained at ambient temperature. The samples are systematically advanced by rotating the carousel resulting in each sample sequentially falling through a delivery tube containing an inverted ball valve into a sample vaporizing chamber within an oven. An additional pair of sapphire ball valves in communication with the glass vaporizing chamber are sequentially opened and closed in a preprogrammed manner along with the opening and closing of the thermal inverted ball valve and the indexing of the carousel such as to automatically evacuate the glass inlet system iwthin the oven, introduce a new sample and vaporize it and then inject this vapor into a mass spectrometer. Such a system is useful in running large numbers of mass spectrometer analyses of hydrocarbon liquids and the like.

REFERENCES:
patent: 2767319 (1956-10-01), Beeton et al.
patent: 3590243 (1971-06-01), Perrin et al.
patent: 3866041 (1975-02-01), Attia
patent: 4076982 (1978-02-01), Ritter et al.
patent: 4314156 (1982-02-01), Kuppermann et al.
patent: 4405860 (1983-09-01), Brunnee et al.
patent: 4532816 (1985-08-01), Miller
patent: 4544317 (1985-10-01), Carter
"An Apparatus for Assaying Helium in Constructional Materials", by Dashkovskii et al., Atomnaya Energiya, vol. 40, #3, Mar. 1976.

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