EPA METHOD 3500B Organic Extraction and Sample Preparation

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1、METHOD3500BORGANICEXTRACTIONANDSAMPLEPREPARATION1.0SCOPEANDAPPLICATION1.1Method3500providesgeneralguidanceontheselectionofmethodsusedinthequantitativeextraction(ordilution)ofsamplesforanalysisbyoneofthesemivolatileornonvolatiledeterminativemethods.Cleanupand/oranalysisoftheresultantextractsare

2、describedinChapterTwoaswellasinMethod3600(Cleanup)andMethod8000(Analysis).1.2Thefollowingtableliststheextractionmethods,thematrixandtheanalytecategory.SAMPLEEXTRACTIONMETHODSFORSEMIVOLATILESANDNONVOLATILESMethod#MatrixExtractionTypeAnalytes3510AqueousSeparatoryFunnelSemivolatile&NonvolatileLiq

3、uid-LiquidExtractionOrganics3520AqueousContinuousLiquid-Semivolatile&NonvolatileLiquidExtractionOrganics3535AqueousSolid-PhaseExtractionSemivolatile&Nonvolatile(SPE)Organics3540SolidsSoxhletExtractionSemivolatile&NonvolatileOrganics3541SolidsAutomatedSoxhletSemivolatiles&NonvolatileExtractionO

4、rganics3542AirSamplingTrainSeparatoryFunnel&SemivolatileOrganicsSoxhletExtraction3545SolidsPressurizedFluidSemivolatile&NonvolatileExtraction(ASE)(HeatOrganics&Pressure)3550SolidsUltrasonicExtractionSemivolatile&NonvolatileOrganics3560/SolidsSupercriticalFluidSemivolatilePetroleum3561Extractio

5、n(SFE)Hydrocarbons&PolynuclearAromaticHydrocarbons3580Non-aqueousSolventSolventDilutionSemivolatile&NonvolatileSolubleWasteOrganics1.3Method3580maybeusedforthesolventdilutionofnon-aqueoussemivolatileandnonvolatileorganicsamplespriortocleanupand/oranalysis.CD-ROM3500B-1Revision2December19961.4M

6、ethods3545,3560,and3561aretechniquesthatutilizepressurizedsolventextractiontoreducetheamountofsolventneededtoextracttargetanalytesandreducetheextractiontimewhencomparedtomoretraditionaltechniquessuchasSoxhletextraction.1.5Priortoemployingthismethod,analystsareadvisedtoconsultthedisclaimerstate

7、mentatthefrontofthemanualandtheinformationinChapterTwoforguidanceontheallowedflexibilityinthechoiceofapparatus,reagents,andsupplies.Inaddition,unlessspecifiedinaregulation,theuseofSW-846methodsisnotmandatoryinresponsetoFederaltestingreq