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Determination of permethrin and cyfluthrin in water and sediment by gas chromatography-mass spectrometry operated in the negative chemical ionization mode

Environmental ChemistryEngineeringPesticide-residue AnalysisGas ChromatographyEnvironmental EngineeringMedicineEnvironmental Analytical ChemistryMass SpectrometryAnalytical ChemistryEcotoxicologyEnvironmental ToxicologyChemical PollutionGas Chromatography-mass SpectrometryPharmacologyChromatographyWater AnalysisDrug Analysis