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Proceedings Paper

Long path DOAS measurements of atmospheric pollutants concentration
Author(s): Pavel P. Geiko; Sergey S. Smirnov; Ignatii V. Samokhvalov
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Paper Abstract

A differential optical absorption spectroscopy gas-analyzer consisted of a coaxial telescope, a spectrometer, an analyzer and retroreflector was successfully tested. A high pressure 150-W Xe arc lamp was employed as a light source. In order to record the spectra, a monochrometer with a grating and photodiode array was used. Gas analyzer spectral data bank includes more than 35 moleculas absorbed in UV spectral region. The measured absorption spectra were evaluated by using a least-squares fit to determine the average mixing ratio of each species in the atmosphere. As a result of experiments time series of concentrations of gases polluting the atmosphere were trace measured. Minimally detected concentration on pathlength 480 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 city are presented.

Paper Details

Date Published: 19 November 2015
PDF: 7 pages
Proc. SPIE 9680, 21st International Symposium Atmospheric and Ocean Optics: Atmospheric Physics, 968034 (19 November 2015); doi: 10.1117/12.2205121
Show Author Affiliations
Pavel P. Geiko, Tomsk State Univ. (Russian Federation)
Institute for Monitoring of Climatic and Ecological Systems (Russian Federation)
Sergey S. Smirnov, Tomsk State Univ. (Russian Federation)
Institute for Monitoring of Climatic and Ecological Systems (Russian Federation)
Ignatii V. Samokhvalov, Tomsk State Univ. (Russian Federation)


Published in SPIE Proceedings Vol. 9680:
21st International Symposium Atmospheric and Ocean Optics: Atmospheric Physics
Oleg A. Romanovskii, Editor(s)

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