title: Gas chromatographic quantitation of dextropropoxyphene and norpropoxyphene in urine after solid-phase extraction.
abstract: A gas chromatographic technique with flame ionization detection, which is based on a solid-phase extraction (SPE) procedure using mixed-mode SPE columns, for the simultaneous quantitation of dextropropoxyphene and norpropoxyphene in urine is presented. Urine is treated with sodium hydroxide in order to rearrange, by base catalysis, norpropoxyphene to norpropoxyphene amide, which is then extracted with these columns and chromatographed. The method is specific, linear over the range 0-2000 ng/mL, sensitive, and reproducible. The extracts are cleaner than those obtained with traditional liquid-liquid extraction procedure, which is an important feature in view of further mass spectrometric confirmation of narcotics and other drugs.
authors.affiliation: Laboratoire de Pharmacologie et Toxicologie, Centre Hospitalier Universitaire, Grenoble, France.
authors.forename: G
authors.initials: G
authors.lastname: Amalfitano
authors.forename: J
authors.initials: J
authors.lastname: Bessard
authors.forename: F
authors.initials: F
authors.lastname: Vincent
authors.forename: H
authors.initials: H
authors.lastname: Eysseric
authors.forename: G
authors.initials: G
authors.lastname: Bessard
mesh_terms: D000701:Analgesics, Opioid / Q000652:urine*; D002849:Chromatography, Gas / Q000379:methods*; D011431:Dextropropoxyphene / Q000031:analogs & derivatives* / Q000652:urine*; D005410:Flame Ionization; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods; D006801:Humans; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D015813:Substance Abuse Detection / Q000379:methods*; D013997:Time Factors
chemical_list: D000701:Analgesics, Opioid; C002756:norpropoxyphene; D011431:Dextropropoxyphene