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High performance liquid chromatography determination of chlorophenols in water samples after preconcentration by continuous flow liquid membrane extraction on-line coupled with a precolumn

Chemical EngineeringEngineeringSeparation ScienceGas ChromatographyEnvironmental EngineeringWater SamplesWater PurificationWater TreatmentWater QualityAnalytical ChemistryLiquid ChromatographyChromatographic AnalysisMedicineChromatographyWater AnalysisDrug Analysis