Recent progress on laser absorption spectroscopy for determination of gaseous chemical species

Laser absorption spectroscopy combined with spectral analysis has been extensively investigated in detection and measurements of gas samples because of their broad applicability for measuring more than one hundred species, such as O 2 , CO 2 , H 2 O, HCl, NH 3 , NO x , and hydrocarbons. Recently, re...

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Bibliographic Details
Published in:Applied spectroscopy reviews 2022-02, Vol.57 (2), p.112-152
Main Authors: Fu, Bo, Zhang, Chenghong, Lyu, Wenhao, Sun, Jingxuan, Shang, Ce, Cheng, Yuan, Xu, Lijun
Format: Article
Language:English
Subjects:
Absorption spectroscopy
Ammonia
Gas component concentrations
Gas sampling
Industrial applications
Infrared lasers
Infrared spectroscopy
laser absorption spectroscopy
Lasers
Optical equipment
practical applications
Real time
real-time measurements
Spectrum analysis
Time measurement
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Summary:Laser absorption spectroscopy combined with spectral analysis has been extensively investigated in detection and measurements of gas samples because of their broad applicability for measuring more than one hundred species, such as O 2 , CO 2 , H 2 O, HCl, NH 3 , NO x , and hydrocarbons. Recently, real-time detection and measurements of gas samples based on laser absorption spectroscopy have attracted considerable interest from various fields owing to their performance of robustness, fast response speed, high sensitivity, and good precision. Here, we review the commonly used infrared laser absorption spectroscopy techniques for real-time measurements and the significant optical equipment utilized in measuring systems. Then, we discuss practical applications based on infrared laser absorption spectroscopy which require real-time determination of gas component concentrations, including atmospheric environment monitoring, breath analysis, combustion diagnostics, and industrial applications. Finally, perspectives of real-time determination of gas component concentrations based on infrared laser absorption spectroscopy are presented.
ISSN:0570-4928
1520-569X
DOI:10.1080/05704928.2020.1857258