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

Figure 8

Separation of PA on SP-2 column (80 × 4.6 mm). Acids (15 μg/ml): 1, sorbic; 2, vanillic; 3, sinapic; 4, -coumaric; 5, caffeic; 6, ferulic.