Gas Chromatography-Mass SpectrometryMass SpectrometryChromatography, GasChromatography, LiquidChromatography, High Pressure LiquidSoilVolatile Organic CompoundsSolid Phase MicroextractionMetabolomicsTandem Mass SpectrometryMetabolomePerianal GlandsSpectrometry, Mass, Electrospray IonizationOils, VolatileSubstance Abuse DetectionVolatilizationOcimum basilicumChromatography, Thin LayerAndrostenediolsAcetic AnhydridesSoil MicrobiologyMeconiumDeuteriumDoping in SportsF2-IsoprostanesMagnetic Resonance SpectroscopyFatty AcidsSpectrometry, Mass, Matrix-Assisted Laser Desorption-IonizationBiotransformationCarboxylic AcidsHydroxyeicosatetraenoic AcidsGasesSoil PollutantsUrinalysisReproducibility of ResultsOxidation-ReductionEstersQuality ControlSteroidsMolecular Sequence DataChemistryMolecular StructureMethylationWater Pollutants, ChemicalChemical PhenomenaFlame IonizationCarbohydrate ConformationCarbohydrate SequencePolycyclic Hydrocarbons, AromaticLipoxygenaseStereoisomerismSensitivity and SpecificityArachidonic AcidsArachidonic AcidHot TemperatureHydrolysisProteomicsDinoprostCytochrome P-450 Enzyme SystemFatty Acids, UnsaturatedBiological MarkersLiverHexanesTime FactorsMycolic AcidsChromatography, AffinityCattleKineticsChromatography, Ion ExchangeEucommiaceaeCalibrationAmino Acid SequenceIsotope LabelingLipid MetabolismPentanesChromatographyReference Standards8,11,14-Eicosatrienoic AcidProteomeLimit of DetectionChromatography, GelZeolitesRhodiolaPolycyclic CompoundsBiofuelsBreath TestsWater PollutantsEnvironmental MonitoringReference ValuesFiresCarbon IsotopesCarbon RadioisotopesSugar AcidsMethanococcalesChromatography, Reverse-PhaseMethanolGlucoseDose-Response Relationship, DrugCholesterolMethyl Chloride