Mass spectrometry and mass spectrometer

Details Mass spectrometry and mass spectrometer Mass spectrometry and mass spectrometer

1997-04-18

1998-04-28

Anderson, Bruce

Radiant energy

Ionic separation or analysis

With sample supply means

250282, B01D 5944, H01J 4900

Patent

active

057447985

ABSTRACT:
Ions generated under an atmospheric pressure pass through vacuum chambers partitioned through first, second and third fine holes. The ions are led to an MS part where the ions are mass-analyzed. A first vacuum chamber adjacent to an atmospheric pressure part has not vacuum pump for independently pumping this chamber. The first vacuum chamber is evacuated by a common pump together with a second vacuum chamber via a bypass hole formed in the wall having the second aperture. A pressure of the first vacuum chamber can be set to several 100 Pa, while a pressure of the second vacuum chamber can be set to several 10 Pa. Sufficient desolvation has been attained by an ion acceleration voltage of approximately 100 V in the first vacuum chamber, while a speed spread can be restrained. The ions are accelerated by approximately 10 V in the second vacuum chamber, an the speed spread can be restrained as low as possible.

REFERENCES:
patent: 3842266 (1974-10-01), Thomas
patent: 4209696 (1980-06-01), Fite
patent: 4740696 (1988-04-01), Osawa et al.
patent: 4769540 (1988-09-01), Mitsui et al.
patent: 4842701 (1989-06-01), Smith et al.
patent: 4963735 (1990-10-01), Okamoto et al.
patent: 4996424 (1991-02-01), Mimura et al.
patent: 5015845 (1991-05-01), Allen et al.
patent: 5157260 (1992-10-01), Mylchreest
Analytical Chemistry, vol. 62, No. 13, 1st Jul. 1990, pgs. 713A-725A, American Chemical Society; E.C. Huang et al: "Atmospheric pressure ionization mass spectrometry", p. 713A; figures 1-2.

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