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A novel mixed hemimicelles dispersive micro-solid phase extraction using ionic liquid functionalized magnetic graphene oxide/polypyrrole for extraction and pre-concentration of methotrexate from urine samples followed by the spectrophotometric method

Solvent ExtractionIonic LiquidChemical EngineeringEngineeringSeparation ScienceAnalytical ChemistryUrine SamplesBiomedical EngineeringLiquid ChromatographyChromatographic AnalysisMagnetic Graphene Oxide/polypyrroleAdvanced SeparationChromatography