Radiant energy – Ionic separation or analysis – With sample supply means
Patent
1991-04-17
1992-12-08
Anderson, Bruce C.
Radiant energy
Ionic separation or analysis
With sample supply means
250281, A01J 4900, B01D 5944
Patent
active
051700522
ABSTRACT:
A device for ionizing a sample includes a space separated from the environment, and the sample is injected and nebulized into the space. Fluid introduction pathways are formed adjacent to a position where the sample is injected, so as to introduce fluid into the space. The introduced fluid is brought into contact with a flow of the injected sample, thereby promoting production of a mist of the sample having finer particles. Then, the pressure of the space is reduced, and the space is shaped to maintain its pressure-reduced condition. Since the space to which the sample is injected is separated from the environment, the fluid delivered to the flow of the injected sample is hardly influenced by turbulence of the environment, to thereby effect constant production of a fine mist and accordingly reliable ionizetion of the sample. An apparatus for mass spectrometry of the sample is constituted by combining this ionization device with a liquid chromatograph and other required system elements.
REFERENCES:
patent: 4977785 (1990-12-01), Willoughby et al.
patent: 4996424 (1991-02-01), Mimura et al.
"Sample introduction techniques for Atomic Spectroscopy" Brownert et al., Anal Chem. vol. 56, No. 7, pp. 875A-888A.
"Monodisperse aerosol generation interface for combining liquid chrom. with m.s." Willoughby, Anal. Chemistry, vol. 56, No. 14, pp. 2626-2631.
Anderson Bruce C.
Hitachi , Ltd.
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