HPLC Separation of Phenolic Acids on Silica Gels Layer-by-Layer Modified with 6,10-Ionene and Dextran Sulfate

Figure 7

Chromatogram of a mixture of PA on a column with sorbent-4. Acids (15 μg/ml): 1, sorbic; 2, nicotinic; 3, vanillic; 4, gallic; 5, -coumaric; 6, ferulic; 7, caffeic.