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ID:44075823
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页数:15页
时间:2019-10-18
《EPA METHOD 3500B Organic Extraction and Sample Preparation》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
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
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