Simultaneous measurement of N2O, CH4, and NH3 with a compact quartz-enhanced photoacoustic sensor for monitoring agricultural activities

Pietro Patimisco; Elena Kniazeva; Andrea Zifarelli; Angelo Sampaolo; Marilena Giglio; Giansergio Menduni; Fabrizio Manassero; Elio Dinuccio; Giorgio Provolo; Vincenzo Spagnolo

doi:10.1117/12.2607087

5 March 2022 Simultaneous measurement of N₂O, CH₄, and NH₃ with a compact quartz-enhanced photoacoustic sensor for monitoring agricultural activities

Pietro Patimisco, Elena Kniazeva, Andrea Zifarelli, Angelo Sampaolo, Marilena Giglio, Giansergio Menduni, Fabrizio Manassero, Elio Dinuccio, Giorgio Provolo, Vincenzo Spagnolo

Author Affiliations +

Proceedings Volume 12009, Quantum Sensing and Nano Electronics and Photonics XVIII; 120090G (2022) https://doi.org/10.1117/12.2607087
Event: SPIE OPTO, 2022, San Francisco, California, United States

Abstract

We report on a compact, lightweight, and portable sensor for simultaneous detection of methane, nitrous oxide, and ammonia in atmosphere. The sensor embeds two detection modules based on quartz-enhanced photoacoustic spectroscopy, with two quantum cascade lasers as light sources and two spectrophones with custom-made quartz tuning forks. Dedicated electronic boards were designed to control the laser sources, to stabilize the gas flow and to perform data analysis, with a computer interface for an easy end-user operation. The sensor was calibrated in laboratory environment with certified concentrations. Detection limits well below the natural abundance in standard air were achieved.

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Pietro Patimisco, Elena Kniazeva, Andrea Zifarelli, Angelo Sampaolo, Marilena Giglio, Giansergio Menduni, Fabrizio Manassero, Elio Dinuccio, Giorgio Provolo, and Vincenzo Spagnolo "Simultaneous measurement of N₂O, CH₄, and NH₃ with a compact quartz-enhanced photoacoustic sensor for monitoring agricultural activities", Proc. SPIE 12009, Quantum Sensing and Nano Electronics and Photonics XVIII, 120090G (5 March 2022); https://doi.org/10.1117/12.2607087

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