Continuous Emission Monitoring of Tetrafluoromethane Using Quantum Cascade Lasers
AbstractRecent developments in quantum cascade lasers have enabled the development of new sensors for in-situ applications that have so far only been possible with extractive systems. In this work, a sensor is presented using a unique Wavelength Modulation Spectroscopy approach to measure tetrafluoromethane, a strong greenhouse gas. The sensor was characterized in a laboratory environment indicating a long-term detection limit of 20 ppb·m and a short-term value of well below 10 ppb·m. To demonstrate the feasibility of the sensor in a real-world environment, it was installed at an Alcoa aluminum smelter. A co-located Fourier Transform Infrared Spectrometer allowed direct comparison measurements of both systems. General agreement between the two methods was observed, leading to the conclusion that the developed in-situ quantum cascade laser based sensor has the potential to continuously measure tetrafluoromethane at aluminum smelters. View Full-Text
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Geiser, P.; Avetisov, V.; Espinoza-Nava, L.; Menegazzo, N.; Kaspersen, P. Continuous Emission Monitoring of Tetrafluoromethane Using Quantum Cascade Lasers. Photonics 2016, 3, 16.
Geiser P, Avetisov V, Espinoza-Nava L, Menegazzo N, Kaspersen P. Continuous Emission Monitoring of Tetrafluoromethane Using Quantum Cascade Lasers. Photonics. 2016; 3(2):16.Chicago/Turabian Style
Geiser, Peter; Avetisov, Viacheslav; Espinoza-Nava, Luis; Menegazzo, Nicola; Kaspersen, Peter. 2016. "Continuous Emission Monitoring of Tetrafluoromethane Using Quantum Cascade Lasers." Photonics 3, no. 2: 16.
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