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Nano polypyrrole-coated magnetic solid phase extraction followed by dispersive liquid phase microextraction for trace determination of megestrol acetate and levonorgestrel

Solvent ExtractionMagnetismChemical EngineeringMegestrol AcetateEngineeringPolymer-based MagnetMagnetic ResonanceTrace DeterminationAnalytical ChemistryLiquid ChromatographyChemistryMedicineChromatographyDrug Analysis