A Spectrophotometric Method for the Analysis of Multicomponent Mixtures and Its Infra-Red Application

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Abstract
A general method has been developed for spectrophotometric analysis of multicomponent mixtures. The method is based on the assumption that the optical density of a mixture equals the sum of the optical densities of the components, although the transmissions of the individual components may not follow Beer's law. The application of the method to infra‐red absorption of vapor samples is described in detail. The results of tests using a six‐component C4 hydrocarbon mixture are given. The method is especially useful for the rapid routine analysis of large numbers of samples containing the same components, and therefore is well suited for plant control purposes.

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