Radiant energy – Ionic separation or analysis – With sample supply means
Patent
1995-05-30
1996-11-05
Berman, Jack I.
Radiant energy
Ionic separation or analysis
With sample supply means
250281, 250282, H01J 4910
Patent
active
055720234
ABSTRACT:
Electrospray equipment and techniques are provided for receiving a liquid solution containing test molecules of interest and solvent and forming ionized droplets of interest for analysis by a mass spectrometer. The flow path within the electrically charged spray needle 16 may be filled with a packing material 20 for adsorbing selected chemicals in the liquid solution before being discharged from the spray needle into a vaporizing chamber 33. The spray needle preferably comprises a fused silica capillary tubing, and the discharge end 25 of the capillary tubing is spaced closely adjacent an exit orifice 31 of the vaporizer probe 12. Inert gas such as pure nitrogen is input to the probe. The techniques of the present invention are particularly well suited for mass spectrometer analysis of low flow rate test material.
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Berman Jack I.
Board of Regents , The University of Texas System
Nguyen Kiet T.
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