Radiant energy – Ionic separation or analysis – With sample supply means
Reexamination Certificate
2006-01-04
2008-08-05
Vanore, David A. (Department: 2881)
Radiant energy
Ionic separation or analysis
With sample supply means
C250S282000, C250S284000
Reexamination Certificate
active
07408153
ABSTRACT:
An apparatus for detecting chemical substances which is high in sensitivity and selectivity is provided.An organic acid or an organic acid salt is used to generate an organic acid gas from an organic acid gas generator3to be mixed with a sample gas for introduction into an ion source4for ionization, thereby obtaining a mass spectrum by a mass analysis region5. A data processor6determines the detection or non-detection of a specific m/z of an organic acid adduct ion obtained by adding a molecule generated from the organic acid to a molecule with specific m/z generated from a target chemical substance to be detected based on the obtained mass spectrum. When there is an ion peak with the m/z of the organic acid adduct ion, the presence of the target chemical substance to be detected is determined, and an alarm is sounded.False detection can be prevented.
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Samantha L. Richards et al., “The Detection of Explosives Residues from Boarding Passes”, 7th International Symposium on Analysis and Detection of Explosives (2001), pp. 60-65.
Nagano Hisashi
Takada Yasuaki
Waki Izumi
A. Marquez, Esq. Juan Carlos
Fisher Esq. Stanley P.
Hitachi , Ltd.
Reed Smith LLP
Vanore David A.
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