Loading Properties of Capillary Porous-Layer Columns of Different Diameters with a Silica Gel Sorbent

The effect of the diameter of a capillary porous-layer column with a silica gel sorbent on the loading properties was studied. Three columns with diameters of 0.25, 0.32, and 0.53 mm with a regularly porous silica gel sorbent were prepared. The loading capacity of the column with a regularly porous sorbent with a diameter of 0.32 mm was 7.3 times higher than for a commercial GS-GasPro column of the same diameter. The influence of the amount of the injected sample on the resolution of chromatographic peaks was shown using the separation of C₄ aliphatic hydrocarbons as an example.