In this paper the performances of two spectrophones for quartz-enhanced photoacoustic spectroscopy (QEPAS)-based ethane gas sensing are tested and compared. Each spectrophone contains a quartz tuning fork (QTF) acoustically coupled with a pair of micro-resonator tubes and having a fundamental mode resonance frequency of 32.7 kHz (standard QTF) and 12.4 kHz (custom QTF), respectively. The spectrophones were implemented into a QEPAS acoustic detection module (ADM) together with a preamplifier having a gain bandwidth optimized for the respective QTF resonance frequency. Each ADM was tested for ethane QEPAS sensing, employing a custom pigtailed laser diode emitting at ~1684 nm as the exciting light source. By flowing 1% ethane at atmospheric pressure, a signal-to-noise ratio of 453.2 was measured by implementing the 12.4 kHz QTF-based ADM, ~3.3 times greater than the value obtained using the standard QTF. The minimum ethane concentration detectable using a 100 ms lock-in integration time achieving the 12.4 kHz custom QTF was 22 ppm.

Quartz-Enhanced Photoacoustic Detection of Ethane in the Near-IR Exploiting a Highly Performant Spectrophone / Sgobba, Fabrizio; Menduni, Giansergio; Dello Russo, Stefano; Sampaolo, Angelo; Patimisco, Pietro; Giglio, Marilena; Ranieri, Ezio; Passaro, Vittorio M. N.; Tittel, Frank K.; Spagnolo, Vincenzo Luigi. - In: APPLIED SCIENCES. - ISSN 2076-3417. - ELETTRONICO. - 10:7(2020). [10.3390/app10072447]

Quartz-Enhanced Photoacoustic Detection of Ethane in the Near-IR Exploiting a Highly Performant Spectrophone

Giansergio Menduni;Angelo Sampaolo;Pietro Patimisco;Marilena Giglio;Ezio Ranieri;Vittorio M. N. Passaro;Vincenzo Spagnolo
2020-01-01

Abstract

In this paper the performances of two spectrophones for quartz-enhanced photoacoustic spectroscopy (QEPAS)-based ethane gas sensing are tested and compared. Each spectrophone contains a quartz tuning fork (QTF) acoustically coupled with a pair of micro-resonator tubes and having a fundamental mode resonance frequency of 32.7 kHz (standard QTF) and 12.4 kHz (custom QTF), respectively. The spectrophones were implemented into a QEPAS acoustic detection module (ADM) together with a preamplifier having a gain bandwidth optimized for the respective QTF resonance frequency. Each ADM was tested for ethane QEPAS sensing, employing a custom pigtailed laser diode emitting at ~1684 nm as the exciting light source. By flowing 1% ethane at atmospheric pressure, a signal-to-noise ratio of 453.2 was measured by implementing the 12.4 kHz QTF-based ADM, ~3.3 times greater than the value obtained using the standard QTF. The minimum ethane concentration detectable using a 100 ms lock-in integration time achieving the 12.4 kHz custom QTF was 22 ppm.
2020
Quartz-Enhanced Photoacoustic Detection of Ethane in the Near-IR Exploiting a Highly Performant Spectrophone / Sgobba, Fabrizio; Menduni, Giansergio; Dello Russo, Stefano; Sampaolo, Angelo; Patimisco, Pietro; Giglio, Marilena; Ranieri, Ezio; Passaro, Vittorio M. N.; Tittel, Frank K.; Spagnolo, Vincenzo Luigi. - In: APPLIED SCIENCES. - ISSN 2076-3417. - ELETTRONICO. - 10:7(2020). [10.3390/app10072447]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11589/193220
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