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Simultaneous supercritical fluid extraction and chemical derivatization for the gas chromatographic–isotope dilution mass spectrometric determination of amphetamine and methamphetamine in urine

Chemical DerivatizationSupercritical Fluid ChromatographyGas ChromatographyMedicineDrug PurityMass SpectrometryAnalytical ChemistryChromatographic AnalysisPharmacologyChromatographyDrug Analysis