Abstract
A differential optical absorption spectroscopy (DOAS) gas-analyzer was successfully tested. A high pressure 150-W Xe arc lamp was employed as a light source. This system consisted of a coaxial telescope, a spectrometer, an analyzer and retroreflector. In order to record the spectra, a monochrometer with a grating and photodiode array was adopted. Gas analyzer spectral data bank includes more than 30 moleculas absorbed in UV spectral region. The measured absorption spectra were evaluated by using a least-squares to determine the average mixing ratio of each species in the atmosphere. A number of air pollutants concentrations: SO2, NO2, O3, etc were trace measured. Minimally detected concentration on pathlength 400 m is the unit of ppb at the time of accumulation of 2 min. The results of the field test measurements of pollutants in Tomsk are presented.
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Geiko, P.P., Smirnov, S.S. & Samokhvalov, I.V. Detection of concentration small gas components of atmosphere by DOAS method. Opt. Mem. Neural Networks 24, 152–158 (2015). https://doi.org/10.3103/S1060992X15020034
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DOI: https://doi.org/10.3103/S1060992X15020034