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Apparatus and method for generating chemical signatures using differential desorption

  • US 10,283,340 B2
  • Filed: 08/17/2018
  • Issued: 05/07/2019
  • Est. Priority Date: 06/15/2014
  • Status: Active Grant
First Claim
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1. A method of analyzing a sample, the method comprising the steps:

  • contacting a sorbent coated screen with a sample, where the sorbent coated mesh is of sufficient size to permit multiple exposure of the sorbent coated mesh to a plurality of different temperature gasses from a desorption ionization source;

    directing a carrier gas with a first temperature from the desorption ionization source at a first target area on the sorbent coated mesh to generate a plurality of first sample ions;

    directing the carrier gas with a second temperature from the desorption ionization source at a second target area on the sorbent coated mesh to generate a plurality of second sample ions, where the second target area is not exposed to the carrier gas with the first temperature;

    directing one or both the plurality of first sample ions and the plurality of second sample ions into an analysis instrument; and

    analyzing one or both the plurality of first sample ions and the plurality of second sample ions, thereby analyzing the sample.

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