OV-225 as a stationary phase for the determination of anticonvulsants, mexiletine, barbiturates, and acetaminophen.

Rapid methods of analysis for anticonvulsants (phenobarbitone, carbamazepine, primidone and phenytoin simultaneously and ethosuximide), barbiturates, mexiletine, lidocaine and acetaminophen are described. All drugs are chromatographed on OV-225 at various temperatures and detected using a nitrogen specific detector. OV-225 has proved to be superior to the more common SE-30, OV-17 and OV-1 phases, particularly for the simultaneous determination of the four anticonvulsants. No problems relating to the bleed of cyanopropyl containing stationary phase into the nitrogen specific detector have been encountered.