Radiant energy – Ionic separation or analysis – With sample supply means
Reexamination Certificate
2006-04-11
2006-04-11
Wells, Nikita (Department: 2881)
Radiant energy
Ionic separation or analysis
With sample supply means
C250S286000, C250S281000, C250S282000
Reexamination Certificate
active
07026612
ABSTRACT:
Disclosed is a method and apparatus for improving at least one of a peak separation and a signal intensity relating to an ion of interest being transmitted through an analyzer region of a FAIMS apparatus. A method according to the instant invention includes a step of introducing ions including an ion of interest into an analyzer region of a FAIMS. A flow of a doped carrier gas other than air is also provided through the analyzer region. The doped carrier gas includes a carrier gas and a trace amount of a predetermined dopant gas, the predetermined dopant gas selected for improving at least one of a peak separation and a signal intensity relating to the ion of interest relative to the peak separation and the signal intensity relating to the ion of interest in the presence of the carrier gas only. The ion of interest is selectively transmitted through the analyzer region in the presence of the doped carrier gas, and detected at a detector.
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Barnett David
Ells Barbara
Guevremont Roger
Purves Randy
Freedman & Associates
Ionalytics Corporation
Wells Nikita
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