Measurements of CF4 and C2F6 in the emissions from aluminum smelters by tunable diode laser absorption spectrometry

Harold I. Schiff; J. Bechara; John T. Pisano; Gervase I. Mackay

doi:10.1117/12.177288

3 June 1994 Measurements of CF₄ and C₂F₆ in the emissions from aluminum smelters by tunable diode laser absorption spectrometry

Harold I. Schiff, J. Bechara, John T. Pisano, Gervase I. Mackay

Author Affiliations +

Proceedings Volume 2112, Tunable Diode Laser Spectroscopy, Lidar, and DIAL Techniques for Environmental and Industrial Measurements; (1994) https://doi.org/10.1117/12.177288
Event: SPIE's International Symposium on Optical Sensing for Environmental Monitoring, 1993, Atlanta, GA, United States

Abstract

Because of their very long atmospheric lifetimes the two perfluorocarbons, CF₄ and C₂F₆ have `global warming potentials' tens of thousands times greater than CO₂. Aluminum smelting is believed to be the major source of these gases in the atmosphere although there is a great deal of uncertainty in the global emissions from this source. The emissions occur largely during `anode event' episodes. A tunable diode laser absorption spectrometer was used to measure the emissions of these gases from 8 smelters in the Province of Quebec which represent different technologies and contribute 11% to the total global production of aluminum. The results show that there is considerable variability in emissions between technologies, and in the intensity, the shape and the duration of the anode events with an apparent relationship between the duration and the fluxes during the anode events.

Citation Download Citation

Harold I. Schiff, J. Bechara, John T. Pisano, and Gervase I. Mackay "Measurements of CF₄ and C₂F₆ in the emissions from aluminum smelters by tunable diode laser absorption spectrometry", Proc. SPIE 2112, Tunable Diode Laser Spectroscopy, Lidar, and DIAL Techniques for Environmental and Industrial Measurements, (3 June 1994); https://doi.org/10.1117/12.177288

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