Method for analysis of expired gas
AssigneeWallac Oy
InventorsJaakko-Juhani Himberg, Olli Laakso, Reijo Laaksonen
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Abstract
A method for detecting and measuring volatile components in expired gas by sampling the expired gas containing the volatile components; passing infrared radiation from an interferometer through the sample; detecting infrared radiation transmitted from the sample to produce a signal characteristic for the volatile components in the sample; and processing the signal and a set of single component reference library spectra of pure molecular gases in order to detect and calculate the amount of the volatile components in the blood of an individual expiring the gas, including the use of a low resolution FT-IR spectrometer in the detecting and processing.
Claims14
A method for detecting and measuring volatile components in expired gas comprising
- sampling the expired gas containing said volatile components;
- passing infrared radiation from an interferometer through the sample;
- detecting infrared radiation transmitted from the sample to produce a signal characteristic for said volatile components in the sample;
- and
- processing said signal and a set of single component reference library spectra of pure molecular gases in order to detect and calculate the amount of said volatile components in the blood of an individual expiring said gas, comprising the use of a low resolution FT-IR spectrometer in said detecting and processing.
Dependencies are inferred from the claim text.