Radiant energy – Ionic separation or analysis – With sample supply means
Reexamination Certificate
2007-01-09
2007-01-09
Berman, Jack I. (Department: 2881)
Radiant energy
Ionic separation or analysis
With sample supply means
C250S282000, C250S42300F
Reexamination Certificate
active
11111491
ABSTRACT:
A method and apparatus are provided for identifying analytes at low concentrations in a liquid sample. The liquid sample is introduced through a continuous flow membrane inlet system. The analytes that permeate the membrane are analyzed by photoionization-time-of-flight mass spectrometry. The analytes remaining in the liquid sample that do not permeate the membrane are conducted to a capillary tube inlet that introduces the liquid sample and other analytes as droplets into the photoionization zone. Any analytes remaining absorbed or adsorbed on the membrane are driven through the membrane by application of heat. Analytes may be analyzed by either resonance enhanced multiphoton ionization (REMPI) or single photon ionization (SPI), both of which are provided in the apparatus and can be selected as alternative sources.
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Chou Grace F.
Coggiola Michael J.
Oser Harald
Young Steven E.
Berman Jack I.
Beyer Weaver & Thomas LLP.
SRI - International
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