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【英文标准名称】:StandardTestMethodforSequentialBatchExtractionofWastewithAcidicExtractionFluid
【原文标准名称】:带酸性萃取液的废弃物顺序批量萃取的标准试验方法
【标准号】:ASTMD5284-1993(2004)e1
【标准状态】:现行
【国别】:
【发布日期】:1993
【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】:废弃物;萃取;试验
【英文主题词】:acidicprecipitation;extract;extractionfluid;leaching;sequentialbatchextraction;wasteleachingtechnique
【摘要】:Thistestmethodisintendedasameansforobtainingsequentialextractsofawaste.Theextractsmaybeusedtoestimatethereleaseofcertainconstituentsofthewasteunderthelaboratoryconditionsdescribedinthistestmethod.ThepHoftheextractionfluidusedinthistestmethodistoreflectthepHofacidicprecipitationinthegeographicregioninwhichthewastebeingtestedistobedisposed.Note18212;PossiblesourcesofinformationconcerningthepHofprecipitationinthegeographicregionofinterestincludestateandfederalenvironmentalagencies,stateuniversities,libraries,etc.Note28212;Forsequentialbatchextractionofwasteusinganonacidicextractionfluid,seeTestMethodD4793.AnintentofthistestmethodisforthefinalpHofeachoftheextractstoreflecttheinteractionoftheextractantwiththebufferingcapacityofthewaste.Thistestmethodisnotintendedtoprovideextractsthatarerepresentativeoftheactualleachateproducedfromawasteinthefieldortoproduceextractstobeusedasthesolebasisofengineeringdesign.Thistestmethodhasnotbeendemonstratedtosimulateactualdisposalsiteleachingconditions.Thistestmethodproducesextractsthatareamenabletothedeterminationofbothmajorandminor(trace)constituents.Whenminorconstituentsarebeingdetermined,itisespeciallyimportantthatprecautionsbetakeninsamplestorageandhandlingtoavoidpossiblecontaminationofthesamples.Thistestmethodhasbeentestedtodetermineitsapplicabilitytocertaininorganiccomponentsinthewaste.Thistestmethodhasnotbeentestedforapplicabilitytoorganicsubstances,volatilematter(seeNote5),orbiologicallyactivesamples.Theagitationtechnique,rate,liquid-to-solidratio,andfiltrationconditionsspecifiedintheproceduremaynotbesuitableforextractingalltypesofwastes(seeSections7and8andAppendixX1).1.1Thistestmethodprovidesaprocedureforthesequentialleachingofawastecontainingatleast5%drysolidsinordertogeneratesolutionstobeusedtodeterminetheconstituentsleachedunderthespecifiedtestingconditions.1.2Thistestmethodcallsfortheshakingofaknownweightofwastewithacidicextractionfluidofaspecifiedcompositionaswellastheseparationoftheliquidphaseforanalysis.ThepHoftheextractionfluidistoreflectthepHofacidicprecipitationinthegeographicregioninwhichthewastebeingtestedistobedisposed.Theprocedureisconductedtentimesinsequenceonthesamesampleofwaste,anditgeneratestensolutions.1.3Thistestmethodisintendedtodescribetheprocedureforperformingsequentialbatchextractionsonly.Itdoesnotdescribealltypesofsamplingandanalyticalrequirementsthatmaybeassociatedwithitsapplication.1.4ThevaluesstatedinSIunitsaretoberegardedasthestandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyproblems,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Z17
【国际标准分类号】:
【页数】:15P.;A4
【正文语种】:


【英文标准名称】:Aerospaceseries.Screws,hexagonhead,threadedtohead,inheatresistingsteelfe-PA92HT(A286).Classification:900MPa(atambienttemperature)/650degreescelsius.
【原文标准名称】:航空航天系列.耐热钢FE-PA92HT(A286)螺钉,六角头及螺纹头.类别:900MPa(室温)/650℃
【标准号】:NFL24-112-1994
【标准状态】:现行
【国别】:法国
【发布日期】:1994-11-01
【实施或试行日期】:1994-11-20
【发布单位】:法国标准化协会(AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:耐热的;六角头紧固件;高温;螺纹;螺钉;耐热材料;航空运输;紧固件;分类系统;代码;作标记;六角头螺钉;尺寸;钢;航天运输;特性;航空航天运输;名称与符号
【英文主题词】:
【摘要】:
【中国标准分类号】:V20
【国际标准分类号】:49_030_20
【页数】:8P;A4
【正文语种】:其他