| abstract |
A chromatographic column packing for liquid chromatography, particularly suitable for the separation of polycyclic aromatic compounds, wherein the surface of the base material is treated with a silane coupling agent of general formula (I), wherein Aro represents an aromatic moiety; R?1 and R2¿ represent each independently alkyl, alkenyl, aryl, lower alkoxy or halogen; and R3 represents lower alkoxy or halogen. Since the functional groups of the coupling agent serve to immobilize the aromatic moiety of the same molecule on the surface of the base material by a number of linkages, a packing with stable and excellent separation characteristics can be obtained. |