Preparation of divinylbenzene polymer monolithic columns and their applications in gas chromatography

The preparation of divinylbenzene polymer monolithic columns and their applications in gas chromatography(GC)are discussed.Based on liquid chromatographic(LC)monolithic columns,the highpermeable monolithic columns can be applied in GC through changing the ratio of toluene and dodecanol.It is shown that the monolithic columns possess fastness configuration and good mechanical intensity via the bonding of 3-(trimethoxysilyl)propyl methacrylate(TMP)to the capillary wall and the polymerization of the crosslinker itself.Compared with a commercial porous layer open tube(PLOT)column and a PEG20M column,the monolithic columns demonstrate good performance in the analysis of low carbon alcohols in water,the analysis of mixed solvents and the standard liquor sample.In the mixed solvents,the peak symmetries of alcohols,ketones,esters and aromatics precede those on the PLOT column.The separation of methanol,acetaldehyde and ethyl acetate in the standard liquor sample on the monolithic column is much more convenient than that on PEG-20M columns.