ArticlePhotoacoustics2024
Simultaneous measurement of methane, propane and isobutane using a compact mid-infrared photoacoustic spectrophone.
Article in Photoacoustics, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed.
- Simultaneous photoacoustic detection of coal spontaneous combustion indicator gases using single laser and absorption feature selection-optimized partial least squares regression.Photoacoustics · 2026Article
- Highly Sensitive CO-LITES Sensor Based on a Tapered Fiber Focusing and a Fiber-Coupled MPC.Sensors (Basel, Switzerland) · 2026Article
- Highly Sensitive CHSensors (Basel, Switzerland) · 2026Article
- Photoacoustic spectroscopy detection based on complementary interdigital cantilever enhanced Fabry-Perot acoustic sensor.Photoacoustics · 2025Article
- Sensitive light-induced thermoelastic spectroscopy based on transmitted light amplification.Photoacoustics · 2025Article
- Gas concentration prediction in photoacoustic spectroscopy using PSO-EAP-CNN to address correlation degradation.Photoacoustics · 2025Article
- All-Fiber LITES Sensor Based on Hollow-Core Anti-Resonant Fiber and Self-Designed Low-Frequency Quartz Tuning Fork.Sensors (Basel, Switzerland) · 2025Article
- Highly sensitive HPhotoacoustics · 2025Article
- LITES-Based Sensitive COSensors (Basel, Switzerland) · 2025Article
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6 authors.
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Abstract
Hydrocarbon gas sensing is a challenging task using laser absorption spectroscopy due to the complex and broad structure of absorption lines. This application requires quick, accurate and highly sensitive detection of hydrocarbon gases concentrations. In this paper, a compact photoacoustic spectrophone was developed to simultaneously measure methane, propane and isobutane. This spectrophone uses wavelength modulation spectroscopy (WMS) with a single acoustic resonator and a single DFB laser emitting at 3368 nm, which greatly reduces the system complexity without using time-division multiplexing technology for multi-gas sensing. Due to the complex and broadband absorption of hydrocarbon gases, a novel signal processing method based on multilinear regression with Ridge regression (MLR-RG) is proposed to reduce the measurement error caused by the nonlinearity of spectra signal. For single gas measurement, the detection limits of methane, propane, and isobutane are determined to be 828 ppb, 419 ppb, and 619 ppb (SNR
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