title: Testing for basic drugs in biological fluids by solvent extraction and dual capillary GC/NPD.
abstract: Basic drugs were extracted from 1 mL of serum, urine, or other biological fluids under alkaline conditions into hexane:isoamyl alcohol (98:2). The drugs were back-extracted into acid and re-extracted into 50 microL of chloroform:isoamyl alcohol (95:5) after the acid had been alkalinized. An aliquot of the chloroform:isoamyl alcohol was injected onto a temperature programmed gas chromatograph equipped with two nitrogen phosphorus detectors and two fused silica capillary columns fitted into a single injector. Results obtained from 388 serum samples (from suspected overdose patients) tested using this procedure are presented. The same extraction applied to a variety of body fluids proved reliable for quantitations of several of the basic drugs when a packed column was used.
mesh_terms: D001826:Body Fluids / Q000032:analysis*; D002849:Chromatography, Gas; D002851:Chromatography, High Pressure Liquid; D005260:Female; D006801:Humans; D008895:Milk, Human / Q000032:analysis; D004364:Pharmaceutical Preparations / Q000032:analysis*; D012997:Solvents
chemical_list: D004364:Pharmaceutical Preparations; D012997:Solvents