Reversed-phase separations of proteins (A) and alkylbenzenes (B) using monolithic poly(styrene-co-divinylbenzene) columns. Conditions: (A) column 50 × 8 mm I.D., mobile phase linear gradient from 20 to 60 % acetonitrile in 0.1 % aqueous trifluoroacetic acid in 24 s, flow rate 25 mL/min; (B) column 100 × 8 mm I.D., mobile phase 70% aqueous acetonitrile, flow rate 1 mL/min. Peaks: ribonuclease A (1), cytochrome c (2), myoglobin (3), ovalbumin (4), benzene (5) ethylbenzene (6), butylbenzene (7).