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Non-invasive breath analysis using field asymmetric ion mobility spectrometry

  • US 20050085740A1
  • Filed: 04/01/2004
  • Published: 04/21/2005
  • Est. Priority Date: 04/01/2003
  • Status: Abandoned Application
First Claim
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1. A system for breath analysis comprising:

  • providing a breath sample;

    providing an asymmetric field ion mobility spectrometer comprising;

    an ionization source for ionizing the breath sample and creating ions;

    an analytical gap enclosed by a housing;

    an ion filter disposed in the analytical gap downstream from the ionization source, and including electrodes on an inside surface of the housing for creating an asymmetric electric field to filter the ions;

    an ion flow generator including electrodes proximate but insulated with respect to the ion filter electrodes for creating an electric field transverse to the asymmetric electric field for propelling ions through the asymmetric electric field; and

    an ion detector for sensing ions not filtered by the ion filter.

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