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Simultaneous derivatisation and preconcentration of parabens in food and other matrices by isobutyl chloroformate and dispersive liquid–liquid microextraction followed by gas chromatographic analysis

Food ChemistrySolvent ExtractionIsobutyl ChloroformateSeparation ScienceMedicineGas ChromatographyBioanalysisMass SpectrometrySimultaneous DerivatisationToxicologyAnalytical ChemistryLiquid ChromatographyChemistryChromatographic AnalysisPharmacologyGas Chromatographic AnalysisChromatographyDrug Analysis