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Part-per-trillion determination of chlorobenzenes in water using dispersive liquid–liquid microextraction combined gas chromatography–electron capture detection

Environmental ChemistryChemical EngineeringEngineeringChemical MeasurementGas ChromatographyEnvironmental Analytical ChemistryPart-per-trillion DeterminationOrganic ChemistryWater TreatmentAnalytical ChemistryLiquid ChromatographyChemistryDispersive Liquid–liquid MicroextractionChromatographyWater Analysis