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Analysis of Multi-Component Gas Mixtures by Correlation of Infrared Spectra

Volume 38, Number 5 (Oct. 1984) Page 705-709

Bingham, D.; Burton, C.H.


A simulation study and an experimental investigation of the effect of noise and resolution in the determination of polar gas pressures in gas mixtures has been performed. The pressures were obtained by a procedure which correlates the polar gas infrared spectra and describes band absorptance phenomenologically. For single-polar-component binary mixtures, the partial pressure may be found accurately over a wide range of resolution. Low resolving powers are favored with noisy spectra. Polar gas partial pressures were also extracted from quaternary mixtures, with an uncertaintity of less than 5% over a wide range of resolving power. Improvements to and limitations of the technique are discussed.