Biodiesels derived from various feedstocks often have unique chemical compositions and concentration profiles of major components. Gas chromatography (GC) has been traditionally used to separate the fatty acid methyl esters (FAMEs) present in biodiesel, while chemometric methods have been used recently to associate biodiesels from similar feedstocks. In this study, the effect of the GC temperature program on the chemometric conclusions for various biodiesels was investigated. Three temperature programs were applied to a polar bis-cyanopropyl polysiloxane column (100 m x 0.25 mm x 0.25 �m). Excellent separation of the 37 FAMEs present in a standard reference material was achieved. Full chromatograms as well as peak areas for each of the major components were obtained in eleven biodiesels derived from various feedstocks. Correlation of each biodiesel was evaluated using Principal Component Analysis (PCA). The PCA scores plots for both analyses (peak areas and full chromatograms) will be presented.

Investigation of the effect of GC temperature program on chemometric analysis of biodiesel fuels

245th National Meeting (2013)

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