Multivariate profile analysis of gas chromatograms

Summary Pyrolysis gas chromatography is commonly used for microstructural studies in a wide range of applications. A multivariate statistical computer program has been developed which allows the comparison of closely related complex pyrograms. If the patterns are shown to be statistically different within the reproducibility limits of the experiments, those peaks responsible for the differentiation are denoted. Utilization of such computer matching of chromatographic patterns, in addition to other spectral or microchemical analytical data, aids in the identification of organic unknown structures.