PharmacyPharmaceuticsPharmacologyElectroanalytical MethodsForensic Pharmaceutical AnalysisPharmaceutical TechnologyAqueous Two-phase SystemsDrugs Of AbuseExtraction TechniquesLiquid-liquid ExtractionSolvent ExtractionAqueous Two-phase ExtractionExtraction EfficiencyExtraction Of Organic CompoundsExtraction SolventsIonic Liquid ExtractionPharmaceutical ExtractionSolvent System Design
A 1-butyl-3-methylimidazolium chloride-salt aqueous two-phase system was studied on extraction of abused drugs. The effects of sorts of salts, temperature, concentration of salt and drugs on system were investigated systematically. A satisfactory extraction efficiency of 93%was obtained for papaverine while that of morphine was 65%. The extraction mechanism was primarily discussed.