Computer separation of infrared spectra for analysis of complex organic mixtures

A method for determination of optimum instrumental conditions for collection of reliable dispersive infrared data has been developed for analysis of complex organic mixtures. With a computerized system, spectral subtractions of contaminants from a spectrum of petroleum hydrocarbons were performed before analysis of the petroleum. The system was also used to separate the spectrum of a chemical dispersant from the spectrum of a mixture of oil and dispersant. Qualitative and quantitative data were then obtained for both the petroleum hydrocarbons and the dispersant. 7 figures.