H2S near-IR QEPAS detection in complex gas matrices

M. Olivieri; G. Menduni; A. Zifarelli; M. Giglio; P. Patimisco; A. Sampaolo; V. Spagnolo

doi:10.1117/12.2650297

15 March 2023 H₂S near-IR QEPAS detection in complex gas matrices

M. Olivieri, G. Menduni, A. Zifarelli, M. Giglio, P. Patimisco, A. Sampaolo, V. Spagnolo

Proceedings Volume 12430, Quantum Sensing and Nano Electronics and Photonics XIX; 124300X (2023) https://doi.org/10.1117/12.2650297
Event: SPIE OPTO, 2023, San Francisco, California, United States

Abstract

Hydrogen sulfide (H₂S) is a harmful gas whose emissions are associated to natural gas leaks. Laser-based spectroscopy techniques have been demonstrated to be well suited for real time gas monitoring, providing high sensitivity and selectivity. Quartz enhanced photoacoustic spectroscopy (QEPAS) helped in developing of compact sensors. In the QEPAS sensor here presented, a distribute feedback diode laser emitting around 2.6 μm and a T-shaped quartz tuning fork coupled with acoustic resonator tubes were used to detect H₂S in methane-based matrix. The realized QEPAS sensor is a ready-to use solution for H₂S leaks monitoring in presence of methane (CH₄) at the percent scale.

Conference Presentation

Citation Download Citation

M. Olivieri, G. Menduni, A. Zifarelli, M. Giglio, P. Patimisco, A. Sampaolo, and V. Spagnolo "H₂S near-IR QEPAS detection in complex gas matrices", Proc. SPIE 12430, Quantum Sensing and Nano Electronics and Photonics XIX, 124300X (15 March 2023); https://doi.org/10.1117/12.2650297

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