Abstract
WE have taken spectrograms of pre-mixed gas flames of hydrogen, ammonia, carbon monoxide and hydrocarbons burning with nitrous oxide, nitric oxide and nitrogen dioxide, respectively. The overall spectra of the hydrocarbon flames are very similar. CH-, CN-, NH- and OH-bands are present, and so also are the C2-bands. The latter are quite strong in many flames (especially acetylene), but are generally weaker than the C2-bands in hydrocarbon – oxygen flames. We found no evidence of the CO-fourth positive bands in any of these flames, however strongly our plates were exposed. This band system was reported by Behrens and Rössler1 in a benzene – nitric oxide flame. In the region of the spectrum where this band system of CO should occur, we obtained strong NO-γ-bands.
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Behrens, H., and Rössler, F., Naturwiss., 36, 218 (1949).
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FOGARTY, B., WOLFHARD, H. Spectra of Flames burning with Oxides of Nitrogen. Nature 168, 1122 (1951). https://doi.org/10.1038/1681122a0
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DOI: https://doi.org/10.1038/1681122a0
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