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New Light-Based Method Detects Methane and Acetylene Simultaneously

Researchers at Harbin Institute of Technology have developed a light-induced thermoelastic spectroscopy technique using orthogonal phase modulation to detect two gases at once with a single quartz tuning fork, achieving detection limits of 0.32 ppm for methane and 0.29 ppm for acetylene.

Real-time multi-gas sensing
New Light-Based Method Detects Methane and Acetylene Simultaneously
Oak Ridge National Laboratory · CC BY 2.0 · rights
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Researchers at Harbin Institute of Technology have developed a light-induced thermoelastic spectroscopy technique using orthogonal phase modulation to detect two gases at once with a single quartz tuning fork, achieving detection limits of 0.32 ppm for methane and 0.29 ppm for a…