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Simultaneous separation/preconcentration of ultra trace heavy metals in industrial wastewaters by dispersive liquid–liquid microextraction based on solidification of floating organic drop prior to determination by graphite furnace atomic absorption spectrometry

Solvent ExtractionIndustrial WastewaterChemical EngineeringOrganic DropEngineeringEnvironmental EngineeringEnvironmental RemediationSeparation TechnologyAnalytical ChemistryAdvanced SeparationDispersive Liquid–liquid MicroextractionWaste ManagementWastewater TreatmentSimultaneous Separation/preconcentration