Fast Separation of FFA, FAME, and Glycerol for Biodiesel Analysis by Supercritical Fluid Chromatography

by Jacquelyn Cole, Jennifer Lefler, and Rui Chen, Thar Instruments, Inc.

The alternative fuel is increasing in popularity owing to various technical and economic factors, especially the upsurge in petroleum prices and the implementation of financial incentives for its use. Biodiesel holds a prominent position among the alternative fuels. Depending on the production process, biodiesel product typically contains not only the desired alkyl esters, but also some residual starting material, catalyst, by-product and intermediates. Rapid, reliable and precise determination of the contaminants in biodiesel is of great importance for both process monitoring and product quality control.

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