Quantitative Analysis of Phencyclidine and Metabolites by Capillary Column Gas Chromatography

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Abstract
A sensitive capillary gas chromatography (GC) procedure was developed for the analysis of phencyclidine (PCP), two of its monohydroxy-metabolites, and a recently Identified pentanoic acid metabolite. Two separate, but sequential, integrated extraction techniques were necessary to isolate all of the compounds from a 1.0-mL biological sample. Two GC techniques were necessary to analyze all the compounds; both methods used a capillary column and a nitrogen phosphorus detector (NPD). The first procedure permitted isolation and quantitation of PCP and two monohydroxy-metabolites. A second extraction of the biological samples permitted measurement of the pentenoic acid metabolite. The analytical methods illustrate good reproducibility based on within-day and day-to-day variation. Serum and urine samples were analyzed from a dog administered PCP to illustrate the utility of this procedure.