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Rapid and effective sample clean-up based on magnetic multiwalled carbon nanotubes for the determination of pesticide residues in tea by gas chromatography–mass spectrometry

Gas Chromatography–mass SpectrometryChemical EngineeringEnvironmental ChemistryEngineeringPesticide-residue AnalysisEnvironmental EngineeringEnvironmental Analytical ChemistryAnalytical ChemistryChemical PollutionSample Pre-treatmentCarbon NanotubesChemical ContaminantChromatographyPesticide Residues