Atmospheric Measurement Techniques
Atmospheric Measurement Techniques
AMT
Articles | Volume 10, issue 12
Articles | Volume 10, issue 12
https://doi.org/10.5194/amt-10-4613-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/amt-10-4613-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
Articles | Volume 10, issue 12
Research article
 | 
01 Dec 2017
Research article |  | 01 Dec 2017

Validation of spectroscopic gas analyzer accuracy using gravimetric standard gas mixtures: impact of background gas composition on CO2 quantitation by cavity ring-down spectroscopy

Jeong Sik Lim, Miyeon Park, Jinbok Lee, and Jeongsoon Lee

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Latest update: 20 Nov 2024
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Short summary
Effect of background gas composition on the spectroscopic measurement of CO2 concentration at ambient levels has been investigated. The wavelength-scanned cavity ring-down spectroscopy was employed to explore the spectral line shape of CO2 at 1603 nm. It is revealed that the instrument response should be corrected with respect to a total pressure broadening coefficient given by a matrix composition. The correction method is validated by high accurate gravimetric standard gas mixture.
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