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Multi-functional, discrete and mutually exclusive method for determining concentrations of gases in a gaseous mixture

  • US 8,185,325 B2
  • Filed: 02/10/2009
  • Issued: 05/22/2012
  • Est. Priority Date: 02/11/2008
  • Status: Active Grant
First Claim
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1. A method for determining a concentration of a component of a sample, the method comprising:

  • [1] trapping a volume of the sample in a trapping chamber;

    [2] passing at least a portion of the trapped volume of sample into a sensing chamber, wherein the sensing chamber includes or is in connection with a sensor;

    [3] detecting a change in current as a result of interaction of the sample with a sensor;

    [4] using at least Mathieu'"'"'s Equation with a value for each of its initial conditions, to determine when a value associated with the detected current is in a stable domain;

    [5] when the value associated with the detected current is not in a stable domain, varying one or more of the initial conditions of Mathieu'"'"'s Equation, and repeating the determining until the detected current is in a stable domain; and

    [6] determining the concentration of the component of the sample using the value associated with the detected current.

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