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Optical Absorption Spectrometer and Method for Measuring Concentration of a Substance

  • US 20090257064A1
  • Filed: 05/19/2009
  • Published: 10/15/2009
  • Est. Priority Date: 02/01/2007
  • Status: Abandoned Application
First Claim
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1. An optical absorption spectrometer for determining the concentration:

  • of a substance within a sample, comprising;

    a first radiation source for supplying radiation to the sample to be measured;

    at least one cavity for containing the sample during measurement;

    a detector assembly for simultaneously detecting radiation transmitted along first and second optical paths through the sample, the length of the first optical path within the sample being greater than that of the second optical path within the sample, whereby the radiation detector receives the sum of the radiation transmitted along each of the first and second optical paths, and outputs a radiation signal corresponding thereto; and

    a processor adapted to generate a measurement of the concentration of the substance in the sample from the radiation signal output by the detector.

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