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Kvantovaya Elektronika, 2011, Volume 41, Number 12, Pages 1124–1130 (Mi qe14698)  

This article is cited in 8 scientific papers (total in 8 papers)

Laser applications and other topics in quantum electronics

Near-IR laser-based spectrophotometer for comparative analysis of isotope content of CO2 in exhale air samples

E. V. Stepanov, A. N. Glushko, S. G. Kasoev, A. V. Koval', D. A. Lapshin

Prokhorov General Physics Institute of the Russian Academy of Sciences, Moscow
References:
Abstract: We present a laser spectrophotometer aimed at high-accuracy comparative analysis of content of 12CO2 and 13CO2 isotope modifications in the exhale air samples and based on a tunable near-IR diode laser (2.05 μm). The two-channel optical scheme of the spectrophotometer and the special digital system for its control are described. An algorithm of spectral data processing aimed at determining the difference in the isotope composition of gas mixtures is proposed. A few spectral regions (near 4880 cm-1) are determined to be optimal for analysis of relative content of 12CO2 and 13CO2 in the exhale air. The use of the proposed spectrophotometer scheme and the developed algorithm makes the results of the analysis less susceptible to the influence of the interference in optical elements, to the absorption in the open atmosphere, to the slow drift of the laser pulse envelope, and to the offset of optical channels. The sensitivity of the comparative analysis of the isotope content of CO2 in exhale air samples, achieved using the proposed scheme, is estimated to be nearly 0.1‰.
Received: 21.07.2011
Revised: 29.09.2011
English version:
Quantum Electronics, 2011, Volume 41, Issue 12, Pages 1124–1130
DOI: https://doi.org/10.1070/QE2011v041n12ABEH014698
Bibliographic databases:
Document Type: Article
PACS: 07.57.Ty, 07.88.+y, 42.55.Px, 42.62.Fi
Language: Russian


Citation: E. V. Stepanov, A. N. Glushko, S. G. Kasoev, A. V. Koval', D. A. Lapshin, “Near-IR laser-based spectrophotometer for comparative analysis of isotope content of CO2 in exhale air samples”, Kvantovaya Elektronika, 41:12 (2011), 1124–1130 [Quantum Electron., 41:12 (2011), 1124–1130]
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  • https://www.mathnet.ru/eng/qe/v41/i12/p1124
  • This publication is cited in the following 8 articles:
    Citing articles in Google Scholar: Russian citations, English citations
    Related articles in Google Scholar: Russian articles, English articles
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