Volatile Organic CompoundsVolatilizationOrganic ChemicalsHydrocarbonsAir Pollution, IndoorGas Chromatography-Mass SpectrometrySolid Phase MicroextractionEnvironmental MonitoringAir PollutantsBreath TestsPentanesExhalationBenzeneTolueneBenzene DerivativesGasesAtmosphereXylenesAlkanesChromatography, GasVehicle EmissionsAir Pollutants, OccupationalXylarialesHemiterpenesFlame IonizationTetrachloroethyleneEnvironmental ExposureMonoterpenesVentilationRecyclingOdorsElectronic NoseHerbivoryBombacaceaeAlcoholsHydrocarbons, AromaticPositron-Emission TomographyOzoneOccupational ExposureIndustrial WasteChloroformFiresetting BehaviorGasolineFloors and FloorcoveringsOtoacoustic Emissions, SpontaneousInhalation ExposureGas, NaturalIrritantsSolventsChemistry Techniques, AnalyticalEndophytesHumidityHousingAldehydesTomography, Emission-ComputedFood PackagingAir PollutionAcetoneHazardous SubstancesTerpenesPaintOxylipinsHippuratesWater Pollutants, ChemicalCyclopentanesButadienesBacteriaParticulate MatterStyreneAirFluorodeoxyglucose F18RadiopharmaceuticalsKetonesNitrogen OxidesPlant LeavesFungiFormaldehydeParticle SizeEnvironmental PollutantsMass SpectrometryAscomycotaAir MicrobiologyTomography, Emission-Computed, Single-PhotonPlantsCarbon DioxideOils, VolatileBiodegradation, EnvironmentalCalibrationModels, TheoreticalSensitivity and SpecificityAerosol PropellantsNebulizers and VaporizersReproducibility of ResultsAcetatesInsectsTime FactorsMethaneHydrocarbons, HalogenatedCarbonPrincipal Component Analysis