EPA METHOD 1310B Extraction Procedure (EP) Toxicity Test Method and

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1、METHOD1310BEXTRACTIONPROCEDURE(EP)TOXICITYTESTMETHODANDSTRUCTURALINTEGRITYTEST1.0SCOPEANDAPPLICATION1.1ThismethodisusedtodeterminewhetherawasteexhibitsthecharacteristicofExtractionProcedureToxicity.1.2Theproceduremayalsobeusedtosimulatetheleachingwhichawastemayundergoifdisposedofinasanitaryl

2、andfill.Method1310isapplicabletoliquid,solid,andmultiphasesamples.2.0SUMMARYOFMETHOD2.1Ifarepresentativesampleofthewastecontains>0.5%solids,thesolidphaseofthesampleisgroundtopassa9.5mmsieveandextractedwithdeionizedwaterwhichismaintainedatapHof5±0.2,withaceticacid.Wastesthatcontain<0.5%filter

3、ablesolidsare,afterfiltering,consideredtobetheEPextractforthismethod.Monolithicwasteswhichcanbeformedintoacylinder3.3cm(dia)x7.1cm,orfromwhichsuchacylindercanbeformedwhichisrepresentativeofthewaste,maybeevaluatedusingthestructuralintegrityprocedureinsteadofbeinggroundtopassa9.5-mmsieve.3.0IN

4、TERFERENCES3.1Potentialinterferencesthatmaybeencounteredduringanalysisarediscussedintheindividualanalyticalmethods.4.0APPARATUSANDMATERIALS4.1Extractor-Forpurposesofthistest,anacceptableextractorisonethatwillimpartsufficientagitationtothemixtureto(1)preventstratificationofthesampleandextract

5、ionfluidand(2)ensurethatallsamplesurfacesarecontinuouslybroughtintocontactwithwell-mixedextractionfluid.ExamplesofsuitableextractorsareshowninFigures1through3ofthismethodandareavailablefrom:AssociatedDesigns&ManufacturingCo.,Alexandria,Virginia;Glas-ColApparatusCo.,TerreHaute,Indiana;Millipo

6、re,Bedford,Massachusetts;andRexnard,Milwaukee,Wisconsin.4.2pHmeterorpHcontroller-Accurateto0.05pHunitswithtemperaturecompensation.4.3Filterholder-Capableofsupportinga0.45-µmfiltermembraneandofwithstandingthepressureneededtoaccomplishseparation.Suitablefilterholdersrangefrom3simplevacuumunits

7、torelativelycomplexsystemsthatcanexertupto5.3kg/cm(75psi)ofpressure.Thetypeoffilterholderuseddependsuponthepropertiesofthemixturetobefiltered.FilterholdersknowntoEPAanddeemedsuitableforusearelistedinTable1.1310B-1Revision2November20044.4Filtermembr