Atmospheric pressure ionization mass spectrometer

Details Atmospheric pressure ionization mass spectrometer Atmospheric pressure ionization mass spectrometer

1988-03-30

1989-12-19

Anderson, Bruce C.

Radiant energy

Ionic separation or analysis

250423F, 250288, H01J 4926

Patent

active

048884820

ABSTRACT:
An atmospheric pressure ionization mass spectrometer includes an ionization unit having corona discharge mechanism for introducing thereto gaseous mobile phase molecules and gaseous solute molecules and ionizing the mobile phase molecules through corona discharge under an atmosphere of the mobile phase molecules and the solute molecules; an ion reaction unit for ionizing the solute molecules through molecular ion reaction of the ionized mobile phase molecules with the solute molecules; and an ion analysis unit for mass analyzing the ionized solute molecules; wherein the corona discharge mechanism comprises a discharge electrode for conducting corona discharge at a plurality of points, and a DC power supply for applying a DC voltage to the discharge electrode.

REFERENCES:
patent: 3852595 (1974-12-01), Aberth
patent: 4110612 (1978-08-01), Ligon
patent: 4144451 (1979-03-01), Kambara
"High-Rate Growth of Dendrites on Thin Wire Anodes for Field Desorption Mass Spectrometry", Linden et al., J. Phys. E. Sci. Inst., vol. 11, 1978, pp. 1033-1036.
Thomas R. Covey et al, "Liquid Chromatography/Mass Spectrometry", Analytical Chemistry, vol. 58, No. 14, Dec. 1986, pp. 1451-1461.
E. C. Horning et al, "Liquid Chromatograph-Mass Spectrometer-Computer Analytical Systems, A Continuous-Flow System Based on Atmospheric Pressure Ionization Mass Spectrometry", Journal of Chromatography 99, 1974, pp. 13-21, p. 15.

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