Here we report on the multi-gas detection of carbon monoxide (CO), nitrous oxide (N2O), carbon dioxide (CO2), and water vapor (H2O) by using a quartz-enhanced photoacoustic spectroscopy (QEPAS) sensor exploiting a Vernier effect-based quantum cascade laser as excitation source. The device emission wavelengths ranged from 2100 cm(-1) to 2250 cm(-1). The achieved minimum detection limits were 6 ppb, 7 ppb, and 71 ppm for CO, N2O, and CO2, respectively, at 100 ms of integration time. Finally, QEPAS sensor performances were tested retrieving the concentrations of the target gases within laboratory air.
Quartz-enhanced photoacoustic spectroscopy employing a Vernier-effect distributed feedback-quantum cascade laser for multiple analytes detection
Zifarelli, A.
;De Palo, R.;Patimisco, P.;Giglio, M.;Sampaolo, A.;Spagnolo, V.
2022-01-01
Abstract
Here we report on the multi-gas detection of carbon monoxide (CO), nitrous oxide (N2O), carbon dioxide (CO2), and water vapor (H2O) by using a quartz-enhanced photoacoustic spectroscopy (QEPAS) sensor exploiting a Vernier effect-based quantum cascade laser as excitation source. The device emission wavelengths ranged from 2100 cm(-1) to 2250 cm(-1). The achieved minimum detection limits were 6 ppb, 7 ppb, and 71 ppm for CO, N2O, and CO2, respectively, at 100 ms of integration time. Finally, QEPAS sensor performances were tested retrieving the concentrations of the target gases within laboratory air.File in questo prodotto:
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