ASTM D4793-2009 含水废弃物的连续成批萃取的标准试验方法

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【英文标准名称】:StandardTestMethodforSequentialBatchExtractionofWastewithWater
【原文标准名称】:含水废弃物的连续成批萃取的标准试验方法
【标准号】:ASTMD4793-2009
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:D34.01.04
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:extract;extractionfluid;leaching;sequentialbatchextraction;wasteleachingtechnique;Acidity,alkalinity,pH--chemicals;Batchprocedures;Bufferingaction;Chemicalanalysis--waste;Extractionmethods;Filters/filterprocedures;Leachates/leach
【摘要】:Thistestmethodisintendedasameansforobtainingsequentialextractsofawaste.Theextractsmaybeusedtoestimatethereleaseofcertainconstituentsofthewasteunderthelaboratoryconditionsdescribedinthistestmethod.Thistestmethodisnotintendedtoprovideextractsthatarerepresentativeoftheactualleachateproducedfromawasteinthefieldortoproduceextractstobeusedasthesolebasisofengineeringdesign.Thistestmethodisnotintendedtosimulatesite-specificleachingconditions.Ithasnotbeendemonstratedtosimulateactualdisposalsiteleachingconditions.AnintentofthistestmethodisthatthefinalpHofeachoftheextractsreflectstheinteractionoftheextractantwiththebufferingcapacityofthewaste.AnintentofthistestmethodisthatthewaterextractionsreflectconditionswherethewasteisthedominantfactorindeterminingthepHoftheextracts.Thistestmethodproducesextractsthatareamenabletothedeterminationofbothmajorandminorconstituents.Whenminorconstituentsarebeingdetermined,itisespeciallyimportantthatprecautionsaretakeninsamplestorageandhandlingtoavoidpossiblecontaminationofthesamples.Thistestmethodhasbeentestedtodetermineitsapplicabilitytocertaininorganiccomponentsinthewaste.Thistestmethodhasnotbeentestedforapplicabilitytoorganicsubstances,volatilematter(seeNote3in5.15),orbiologicallyactivesamples.Theagitationtechnique,rate,liquid-to-solidratio,andfiltrationconditionsspecifiedintheproceduremaynotbesuitableforextractingalltypesofwastes(seeSections7,8,andthediscussioninAppendixX1).1.1Thistestmethodisaprocedureforthesequentialleachingofawastecontainingatleastfive%solidstogeneratesolutionstobeusedtodeterminetheconstituentsleachedunderthespecifiedtestingconditions.1.2Thistestmethodcallsfortheshakingofaknownweightofwastewithwaterofaspecifiedpurityandtheseparationoftheaqueousphaseforanalysis.Theprocedureisconductedtentimesinsequenceonthesamesampleofwasteandgeneratestenaqueoussolutions.1.3Thistestmethodisintendedtodescribetheprocedureforperformingsequentialbatchextractionsonly.Itdoesnotdescribealltypesofsamplingandanalyticalrequirementsthatmaybeassociatedwithitsapplication.1.4ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyproblems,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Z16
【国际标准分类号】:
【页数】:10P.;A4
【正文语种】:英语