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1、METHOD1330AEXTRACTIONPROCEDUREFOROILYWASTES1.0SCOPEANDAPPLICATION1.1Method1330isusedtodeterminethemobilemetalconcentration(MMC)inoilywastes.1.2Method1330isapplicabletoAPIseparatorsludges,ragoils,slopoilemulsions,andotheroilwastesderivedfrompetroleumrefini
2、ng.2.0SUMMARYOFMETHOD2.1Thesampleisseparatedintosolidandliquidcomponentsbyfiltration.2.2ThesolidphaseisplacedinaSoxhletextractor,chargedwithtetrahydrofuran,andextracted.TheTHFisremoved,theextractoristhenchargedwithtoluene,andthesampleisreextracted.2.3TheE
3、Pmethod(Method1310)isrunonthedrysolidresidue.2.4Theoriginalliquid,combinedextracts,andEPleachateareanalyzedfortheEPmetals.3.0INTERFERENCES3.1Matrixinterferenceswillbecoextractedfromthesample.Theextentoftheseinterferenceswillvaryconsiderablyfromwastetowast
4、e,dependingonthenatureanddiversityoftheparticularrefinerywastebeinganalyzed.4.0APPARATUSANDMATERIALS4.1Soxhletextractionapparatus.4.2Vacuumpumporothersourceofvacuum.4.3Buchnerfunnel12.4.4Electricheatingmantle.4.5Paperextractionthimble.4.6Filterpaper.4.7Mu
5、slinclothdisks.4.8Evaporativeflask-250-mL.4.9Balance-Analytical,capableofweighingto+0.5mg.CD-ROM1330A-1Revision1July19925.0REAGENTS5.1Reagentgradechemicalsshallbeusedinalltests.Unlessotherwiseindicated,itisintendedthatallreagentsshallconformtothespecifica
6、tionsoftheCommitteeonAnalyticalReagentsoftheAmericanChemicalSociety,wheresuchspecificationsareavailable.Othergradesmaybeused,provideditisfirstascertainedthatthereagentisofsufficientlyhighpuritytopermititsusewithoutlesseningtheaccuracyofthedetermination.5.
7、2Reagentwater.Allreferencestowaterinthismethodrefertoreagentwater,asdefinedinChapterOne.5.3Tetrahydrofuran,C4H80.5.4Toluene,C6H5CH3.6.0SAMPLECOLLECTION,PRESERVATION,ANDHANDLING6.1Samplesmustbecollectedinglasscontainershavingatotalvolumeofatleast150mL.Noso
8、lidmaterialshouldinterferewithsealingthesamplecontainer.6.2Samplingdevicesshouldbewipedcleanwithpapertowelsorabsorbentcloth,rinsedwithasmallamountofhexanefollowedbyacetonerinse,anddriedbetweensamples.Alternatively,s
