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Trace determination of caffeine in surface water samples by liquid chromatography–atmospheric pressure chemical ionization–mass spectrometry (LC–APCI–MS)

Environmental ChemistryEngineeringGas ChromatographyEnvironmental EngineeringEnvironmental Analytical ChemistryMass SpectrometryTrace DeterminationWater QualityAnalytical ChemistrySurface Water SamplesLiquid ChromatographyChromatographic AnalysisMedicineChromatographyWater AnalysisDrug Analysis