Radiant energy – Ionic separation or analysis – With sample supply means
Patent
1996-03-28
1997-09-02
Berman, Jack I.
Radiant energy
Ionic separation or analysis
With sample supply means
250282, H01J 4910
Patent
active
056635613
ABSTRACT:
The invention relates to a device and method for the ionization of non-vaporizable substance molecules at atmospheric pressure by chemical ionization (APCI=atmospheric pressure chemical ionization). The invention consists of desorbing the analyte substances which are mixed with decomposable substances (matrix substances) in solid form on a solid support, by laser irradiation at atmospheric pressure into a gas stream, and to add sufficient ions for proton transfer reactions to the gas stream. Explosives like cellulosis trinitrate or trinitro toluene (TNT) form a preferred class of decomposable matrix substances.
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Franzen Jochen
Koster Claus
Berman Jack I.
Bruker-Franzen Analytik GmbH
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