Potentialities of gaseous biomarkers detection against the main atmospheric components with gas analyzer based on CO2 laser

O. Yu. Nikiforova; I. V. Ptashnik

doi:10.1117/12.722542

1 November 2006 Potentialities of gaseous biomarkers detection against the main atmospheric components with gas analyzer based on CO₂ laser

O. Yu. Nikiforova, I. V. Ptashnik

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Proceedings Volume 6522, Thirteenth Joint International Symposium on Atmospheric and Ocean Optics/ Atmospheric Physics; 652206 (2006) https://doi.org/10.1117/12.722542
Event: Thirteenth Joint International Symposium on Atmospheric and Ocean Optics/ Atmospheric Physics, 2006, Tomsk, Russian Federation

Abstract

Potentialities of detection of minor gases characterizing the biosystem-atmosphere gas exchange, such as C₂H₄, N₂O, NH₃, H₂O₂, using a gas-analyzer based on waveguide CO₂ laser with discrete frequency tuning are studied numerically. The measured signal is recorded over the whole laser frequency scan for 9-μm or 10-μm transitions, i.e. for 25-30 generation lines. An effect of interference of the main gaseous atmospheric components H₂O and CO₂ on the minor gas detection limit and the uncertainty in the retrieved concentration is analyzed. Absorption coefficients of atmospheric gases at CO₂ laser lines are calculated using the HITRAN-2004 spectral database and the CKD water vapor continuum model. Aerosol effect is not taken into account.

Citation Download Citation

O. Yu. Nikiforova and I. V. Ptashnik "Potentialities of gaseous biomarkers detection against the main atmospheric components with gas analyzer based on CO₂ laser", Proc. SPIE 6522, Thirteenth Joint International Symposium on Atmospheric and Ocean Optics/ Atmospheric Physics, 652206 (1 November 2006); https://doi.org/10.1117/12.722542

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