Radiant energy – Ionic separation or analysis – With sample supply means
Patent
1989-03-20
1990-10-02
Berman, Jack I.
Radiant energy
Ionic separation or analysis
With sample supply means
7386312, 7386481, H01V 4928
Patent
active
049609920
ABSTRACT:
This disclosure is concerned with method and apparatus for vaporizing liquid solutions in order to detect, quantitate, and/or determine physical or chemical properties of samples present in liquid solution. Mixtures may be separated by an on-line liquid chromatographic column and the methods used for detection, quantitation, identification, and/or determination of chemical and physical properties include mass spectrometry, photoionization, flame ionization, electron capture, optical photometry, including UV, visible, and IR regions of the spectrum, light scattering, light emission, atomic absorption, and any other technique suitable for detecting or analyzing molecules or particles in a gaseous or vacuum environment. The method and apparatus involves controlled partial vaporization of the solution. Methods are disclosed for controlling the degree of partial vaporization and the temperature at which this vaporization occurs, and for maintaining this degree of vaporization essentially constant even though the solvent flow rate and/or composition may vary in either a controlled or an uncontrolled fashion. This
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Blakely Calvin R.
Fergusson Gordon J.
Vestal Marvin L.
Berman Jack I.
Research Corporation Technologies
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