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Tandem differential mobility ion mobility spectrometer for chemical vapor detection

  • US 20100001182A1
  • Filed: 01/11/2005
  • Published: 01/07/2010
  • Est. Priority Date: 01/11/2005
  • Status: Active Grant
First Claim
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1. A chemical sensing system comprising:

  • a differential mobility spectrometry system operable to isolate a range of chemicals from an environmental sample;

    a time-of-flight ion-mobility spectrometry system downstream of said differential mobility spectrometry system operable to analyze said range of chemicals to produce a time-resolved spectrum of ions; and

    a controller having a stored library of differential mobilities and ion mobilities of predefined target analytes for comparison to said time-resolved spectrum of ions.

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