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Comparison of positive and negative ion detection of tea catechins using tandem mass spectrometry and ultra high performance liquid chromatography

Food ChemistryTea CatechinsBioassay-guided IsolationGas ChromatographyMedicineMass SpectrometryTandem Mass SpectrometryAnalytical ChemistryNegative Ion DetectionLiquid ChromatographyChemistryChromatographic AnalysisPharmacologyChromatographyDrug Analysis