ArticlePhotoacoustics2024
Carbon monoxide impurities in hydrogen detected with resonant photoacoustic cell using a mid-IR laser source.
Article in Photoacoustics, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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Who cites it
10 citing papers in PubMed.
- Highly Sensitive CO-LITES Sensor Based on a Tapered Fiber Focusing and a Fiber-Coupled MPC.Sensors (Basel, Switzerland) · 2026Article
- Simultaneous detection of methane and carbon dioxide in human exhalation based on photoacoustic spectroscopy.Photoacoustics · 2026Article
- Spatially engineered optical-acoustic matching in quartz-enhanced photoacoustic spectroscopy.Photoacoustics · 2026Article
- Highly Sensitive CHSensors (Basel, Switzerland) · 2026Article
- Detecting parts-per-billion carbon monoxide with an ultra-enhanced near-infrared photoacoustic sensor.Photoacoustics · 2026Article
- Sensitive light-induced thermoelastic spectroscopy based on transmitted light amplification.Photoacoustics · 2025Article
- Enhancing photoacoustic trace gas detection via a CNN-transformer denoising framework.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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Authors and funding
10 authors.
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Abstract
We report on a photoacoustic sensor system based on a differential photoacoustic cell to detect the concentration of CO impurities in hydrogen. A DFB-QCL laser with a central wavelength of 4.61 µm was employed as an exciting source with an optical power of 21 mW. Different concentrations of CO gas mixed with pure hydrogen were injected into the photoacoustic cell to test the linear response of the photoacoustic signal to the CO concentration. The stability of the long-term operation was verified by Allan-Werle deviation analysis. The minimum detection limit (MDL, SNR=1) results 8 ppb at 1 s and reaches a sub-ppb level at 100 s of integration time. Dynamic response of the system is linear and has been tested up to the concentration of 6 ppm. Saturation conditions are expected to be reached for CO concentration larger than 100 ppm.
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