A HPLC method for the simultaneous determination of benzophenones is described. The seven compounds studied were separated on a Hypersil ODS C/sub 18/ (25cm*4.6mm i.d.) using acetonitrile-methanol-water (30:30:40, v/v/v) as mobile phase at 1.0mL min/sup -1/ and detected at 286nm. The results obtained were in good agreement with those obtained by differential pulse voltammetry.