Radiant energy – Ionic separation or analysis – Cyclically varying ion selecting field means
Reexamination Certificate
2006-05-16
2006-05-16
Wells, Nikita (Department: 2881)
Radiant energy
Ionic separation or analysis
Cyclically varying ion selecting field means
C250S290000, C250S281000, C250S283000, C250S286000, C250S288000
Reexamination Certificate
active
07045779
ABSTRACT:
The present invention is a method and apparatus for identifying a mixture of particles using a Fourier transform ion cyclotron resonance mass spectrometer (FT-ICR MS). The particles are first reacted in a charge exchange reaction within the FT-ICR MS chamber using ionic partners that are chosen to discriminate among components of the mixture based on ionization potential. Mass spectra of test runs using different ionic partners may then be compared to identify components based on information gathered about both molecular mass and ionization potential.
REFERENCES:
patent: 5285064 (1994-02-01), Willoughby
patent: 5608216 (1997-03-01), Wells et al.
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