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Molecularly imprinted-solid phase extraction combined with simultaneous derivatization and dispersive liquid–liquid microextraction for selective extraction and preconcentration of methamphetamine and ecstasy from urine samples followed by gas chromatography

Imprinted-solid Phase ExtractionSolvent ExtractionSimultaneous DerivatizationGas ChromatographyMedicineDrug PurityForensic ToxicologyDrug TestAnalytical ChemistryUrine SamplesLiquid ChromatographyPharmacologyChromatographyDrug Analysis