Abstract
AbstractMethods are described for the rapid fractionation of classes of lipids containing the hetero elements N, P, and S such as primary amines, secondary amines, tertiary amines, and quaternary ammonium salts containing one, two, or three long‐chain moieties; amides, nitriles, and other nitrogenous lipids; alkyl sulfates and sulfonates; alkyl phosphates and phosphonates.Thin‐layer chromatography on silicic acid separates lipids according to classes of compounds. After isolation by thin‐layer chromatography, each lipid class is amenable to further fractionation, according to chain length and degree of unsaturation, by complementary methods, such as paper chromatography and/or gas‐liquid chromatography.These procedures permit rapid analyses of complex mixtures of industrial lipids, such as surface‐active agents, and identification of industrial compounds synthesized from fatty raw materials.
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