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18 December 2019 Long path detection of atmospheric pollutants by UV DOAS gas-analyzer
Pavel P. Geiko, Sergey S. Smirnov, Ignatii V. Samokhvalov
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Proceedings Volume 11208, 25th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics; 112082T (2019) https://doi.org/10.1117/12.2538655
Event: XXV International Symposium, Atmospheric and Ocean Optics, Atmospheric Physics, 2019, Novosibirsk, Russian Federation
Abstract
Differential optical absorption spectroscopy (DOAS) gas-analyzer was successfully tested. Ultraviolet light emitting diodes and high pressure Xe arc lamp were employed as a light sources. Recent developments in fibre-coupling telescope technology and the availability of UV LEDs allowed us to construct a portable instrument. The DOAS system consisted of a coaxial telescope, a spectrometer, and retroreflector. Gas analyzer spectral data bank includes more than 40 molecules absorbed in UV spectral region. Minimally detected concentration is the unit of ppb on paths up to 500 m. The results of the field test measurements of pollutants in Tomsk are presented
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Pavel P. Geiko, Sergey S. Smirnov, and Ignatii V. Samokhvalov "Long path detection of atmospheric pollutants by UV DOAS gas-analyzer", Proc. SPIE 11208, 25th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics, 112082T (18 December 2019); https://doi.org/10.1117/12.2538655
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KEYWORDS
Absorption
Light emitting diodes
Telescopes
Ultraviolet radiation
Lamps
Light sources
Gases
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