Separation of uracil and alkylbenzenes using a monolithic poly(glycidyl methacrylate-co-ethylene dimethacrylate) capillary column (a) and its counterpart containing 0.25 wt% entrapped MWNT (with respect to the monomers) (b), both prepared at a temperature of 55 °C. Conditions: Column, 180 mm × 100 μm i.d., mobile phase 45% acetonitrile-5% THF-50% water, flow rate 1.00 μL/min, back pressure 16 MPa, UV detection at 254 nm; Peaks: uracil (1), benzene (2), toluene (3), ethylbenzene (4), propylbenzene (5), butylbenzene (6), and amylbenzene (7).