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The article focuses on a study for the analysis of acylglycerols and glycerol in a biodiesel model using ultra-performance convergence chromatography. The study employs pure fatty acid ethyl esters, glycerol and soybean oil. The study concludes that triacyl-glycerols, diacylglycerols, monoacylglycerols, and free glycerol ranging from 5.0 percent and 0.2 percent were easily separated from model biodiesel.

The article focuses on a research related to the analysis of impurities in model biodiesel by using ultraperformance convergence chromatography (UPC²). Topics discussed include the use of UPC² coupled with supercritical carbon dioxide and particle columns for analysis of acylglycerols and glycerol present in biodiesel, the use of a single ACQUITY UPC² HSS C18 SB Column and quantitation of residual acylglycerols.