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Ultrasound-Assisted Switchable Solvent in Determination of Quaternary Ammonium Herbicide Paraquat in Biological, Environmental Water, and Apple Juice Samples Using Chemical Reduction Process Coupled to GC–MS Detection

EngineeringPesticide-residue AnalysisEnvironmental EngineeringEnvironmental Analytical ChemistryBioanalysisMass SpectrometryAnalytical ChemistryEnvironmental WaterLiquid ChromatographyMedicineUltrasound-assisted Switchable SolventGc–ms DetectionChromatographyDrug Analysis