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.
H2S near-IR QEPAS detection in complex gas matrices
Olivieri M.
;Zifarelli A.
;Patimisco P.
;
2023-01-01
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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
