Abstract
A gas sensor based on quartz-enhanced photoacoustic spectroscopy and using near-infrared, fiber-coupled diode lasers as an excitation source was developed for chemical analysis of gas mixtures containing H2S, CO2, and CH4 at concentrations from 0 to 100%. Analysis of physical phenomena affecting the sensor operation is performed, the sensor performance is evaluated, and simple algorithms are developed to derive concentrations of the gases from detected electrical signals.
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Kosterev, A.A., Dong, L., Thomazy, D. et al. QEPAS for chemical analysis of multi-component gas mixtures. Appl. Phys. B 101, 649–659 (2010). https://doi.org/10.1007/s00340-010-4183-7
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DOI: https://doi.org/10.1007/s00340-010-4183-7