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半挥发性有机物采样器测量结果不确定度分析 Title:AnalysisofUncertaintyinMeasurementsofSemivolatileOrganicCompoundsUsingaSampler Introduction: Semivolatileorganiccompounds(SVOCs)areaclassofairbornepollutantsthathavetheabilitytovaporizeatroomtemperatureandexertlong-lastingeffectsonenvironmentalandhumanhealth.AccuratemeasurementandquantificationofSVOCsareofutmostimportanceinunderstandingtheirsources,transport,andpotentialimpacts.However,themeasurementofSVOCsisoftenaccompaniedbyvarioussourcesofuncertainty,whichcanaffectthereliabilityandinterpretationoftheresults.ThispaperaimstoanalyzetheuncertaintiesassociatedwiththemeasurementofSVOCsusingasampler. 1.Background: 1.1SemivolatileOrganicCompounds: SVOCsareadiversegroupofchemicalswithvaryingproperties,suchaspolycyclicaromatichydrocarbons(PAHs),phthalates,polychlorinatedbiphenyls(PCBs),andpesticides.Theyentertheatmospherethroughhumanactivities,suchasindustrialemissions,transportation,andresidentialuses. 1.2MeasurementofSVOCs: ThemeasurementofSVOCsofteninvolvestheuseofasampler,whichcollectsairborneparticlesandvapor-phasepollutants.Thecollectedsamplesarethenanalyzedusingvariousanalyticaltechniques,suchasgaschromatography-massspectrometry(GC-MS).However,thisprocessissubjecttoseveralsourcesofuncertainty. 2.SourcesofUncertainty: 2.1SamplerPerformance: Theperformanceofthesampleritselfcanintroduceuncertaintyinthemeasurements.Factorssuchassamplingratevariability,adsorptionefficiency,anddesorptionefficiencycanaffecttheaccuracyoftheresults.Calibratingandvalidatingthesampler'sperformanceiscrucialinreducingtheseuncertainties. 2.2SampleCollection: ThecollectionofSVOCsamplesfromtheenvironmentmayalsointroduceuncertainties.Factorssuchasspatialandtemporalvariability,cross-contamination,andsamplelossduringtransportcancontributetomeasurementerrors.Proceduralcontrolsandappropriatecollectionprotocolsshouldbeimplementedtominimizetheseuncertainties. 2.3AnalyticalTechniques: TheanalyticaltechniquesusedforSVOCmeasurementmayhaveinherentuncertainties.Errorscanarisefrominst

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