Fig. 1From: Evaluation of the QuEChERS extraction approach for the analysis of active compounds of pharmaceuticals in olive tree portionsWorkflow of the optimization of the QuEChERS process. ACN: acetonitrile; PSA: primary secondary amine; MgSO4: magnesium sulfate anhydrous; NaCl: Sodium Chloride; C18: OctadecylsilaneBack to article page