Solid Phase ExtractionInorganic ChemicalsBurseraceaeCalibrationTandem Mass SpectrometryChromatography, High Pressure LiquidChromatography, LiquidAcanthopanaxLimit of DetectionReproducibility of ResultsSpectrophotometry, AtomicReference StandardsGas Chromatography-Mass SpectrometryMass SpectrometrySpectrometry, Mass, Electrospray IonizationSensitivity and SpecificityWater Pollutants, ChemicalIndicators and ReagentsPhenolsMolecular StructureTooth ExtractionSolid Phase MicroextractionSolid-Phase Synthesis TechniquesSpectrophotometry, Ultraviolet