EPA METHOD 3500C Organic Extraction and Sample Preparation

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1、METHOD3500CORGANICEXTRACTIONANDSAMPLEPREPARATION1.0SCOPEANDAPPLICATION1.1Method3500providesgeneralguidanceontheselectionofmethodsusedinthequantitativeextraction(ordilution)ofsamplesforanalysisbyoneofthesemivolatileornonvolatiledeterminativemethods.Cleanupan

2、d/oranalysisoftheresultantextractsaredescribedinChapterTwoaswellasinMethod3600(Cleanup)andMethod8000(Analysis).1.2Thefollowingtableliststheextractionmethods,thematrixtypes,thetechniques,andtheanalytecategories.MethodMatrixTypesExtractionTechniqueAnalytes351

3、0AqueousSeparatoryFunnelSemivolatile&NonvolatileOrganicsLiquid-LiquidExtraction3520AqueousContinuousLiquid-LiquidSemivolatile&NonvolatileOrganicsExtraction3535AqueousSolid-PhaseExtractionSemivolatile&NonvolatileOrganics(SPE)3540SolidsSoxhletExtractionSemivo

4、latile&NonvolatileOrganics3541SolidsAutomatedSoxhletSemivolatile&NonvolatileOrganicsExtraction3542AirSamplingSeparatoryFunnel&SemivolatileOrganicsTrainSoxhletExtraction3545SolidsPressurizedFluidSemivolatile&NonvolatileOrganicsExtraction(PFE)3546SolidsMicrow

5、aveExtractionSemivolatile&NonvolatileOrganics3550SolidsUltrasonicExtractionSemivolatile&NonvolatileOrganics3560SolidsSupercriticalFluidSemivolatilePetroleumExtraction(SFE)Hydrocarbons3561SolidsSupercriticalFluidPolynuclearAromaticHydrocarbonsExtraction(SFE)

6、3562SolidsSupercriticalFluidPolychlorinatedBiphenylsandExtraction(SFE)OrganochlorinePesticides3580Non-aqueousSolventDilutionSemivolatile&NonvolatileOrganicsSolvent-SolubleWastes1.3Method3580maybeusedforthesolventdilutionofnon-aqueoussemivolatileandnonvolati

7、leorganicsamplespriortocleanupand/oranalysis.3500C-1Revision3November20001.4Methods3545,3546,3560,3561,and3562aretechniquesthatutilizepressurizedfluidorsolventextractiontoreducetheamountofsolventneededtoextracttargetanalytesandreducetheextractiontimewhencom

8、paredtomoretraditionaltechniquessuchasSoxhletextraction.1.5Priortoemployinganyextractionmethod,analystsareadvisedtoconsultthedisclaimerstatementatthefrontofthemanualandtheinformationinChapterTwoforguid