Analysis of absorption spectra of gas samples using the phasor approach
The absorption spectra of gas samples are analyzed by representing them as a superposition of the absorption spectra of individual sample components. Determining the concentration of molecular components is reduced to solving a system of linear algebraic equations. This approach is complicated when the sample composition is unknown, as well as in the presence of noise in the experimental spectra. Currently, methods from the fields of artificial intelligence and computer vision based on the representation of spectral data as 2D images are actively developing. This paper analyzes an approach to converting the absorption spectra of gas samples into a graphical image on a plane using a phasor approach. The test objects were the absorption spectra of an individual absorption line with a Lorentz profile, a doublet of such lines, and a combination of two molecular components with different ratios between their concentrations. The analysis results showed that the appearance of graphical images depends on the width and central frequency of the absorption line. Based on the analysis of a mixture of two molecular components, it was found that the position of the graphical image of the combined spectrum depends on the ratio of the component concentrations.
Keywords
gas absorption spectra,
determination of gas concentration,
phasor approach,
Fourier transformAuthors
| Lopez Guardado David Aaron | Tomsk State University | aa.ron.29@hotmail.com |
| Nikolaev Viktor V. | Tomsk State University | vik-nikol@bk.ru |
| Zayar Aung | Tomsk State University | zayaraung53@gmail.com |
| Kistenev Yury V. | Tomsk State University | yuk@iao.ru |
Всего: 4
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