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Solid-phase extraction combined with dispersive liquid–liquid microextraction-ultra preconcentration of chlorophenols in aqueous samples

Solvent ExtractionChemical EngineeringEngineeringAqueous SamplesSeparation ScienceSelective SeparationAnalytical ChemistrySolid-phase ExtractionChemistryLiquid ChromatographyMedicineAdvanced SeparationChromatographyDrug Analysis