【英文标准名称】:StandardTestMethodforLeachingSolidMaterialinaColumnApparatus
【原文标准名称】:柱型装置中浸出固体废物的标准试验方法
【标准号】:ASTMD4874-1995(2006)
【标准状态】:现行
【国别】:
【发布日期】:1995
【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】:浸出;固体;废弃物;试验
【英文主题词】:columnleach;leachate;wasteleachingtechnique
【摘要】:Thistestmethodisintendedtoprovideanaqueousleachingofamaterialinadynamicpartitioningmanner.Specificoperatingconditionsforthecolumncanbeselectedtosatisfytheobjectivesofindividualstudies.Anunderstandingofthefundamentalprinciplesgoverningcolumnleachingisnecessaryintheselectionofappropriateconditions.References(1-3)4provideusefulinformationontheseprinciples.Thecolumnapparatusisconstructedofmaterialsthatpermitthegenerationofaleachatewhichissuitableforlowconcentrationorganicanalysisforsemivolatileandnonvolatilecompoundsaswellasinorganicspecies.FIG.1ColumnApparatus1.1Thistestmethodisastandardlaboratoryprocedureforgeneratingaqueousleachatefrommaterialsusingacolumnapparatus.Itprovidesaleachatesuitablefororganicanalysisofsemivolatileandnonvolatilecompoundsaswellasinorganicanalyses.1.2Thecolumnapparatusisdesignedandconstructedofmaterialschosentoenhancetheleachingoflowconcentrationsofsemivolatileandnonvolatileorganicconstituentsaswellastomaximizetheleachingofmetallicspeciesfromthesolid.Analysisofcolumneffluentprovidesinformationontheleachingcharacteristicsofmaterialundertheconditionsusedinthetest.1.3Thistestmethodprovidesforthepassageofanaqueousfluidthroughmaterialsofknownmassinasaturatedup-flowmode.1.4Itisintendedthatthesampleusedintheprocedurebephysically,chemically,andbiologicallyrepresentativeofthematerial.1.5Thistestmethoddoesnotproduceresultsthatcanbeusedasthesolebasisfor(1)engineeringdesignofadisposalsite,or(2)thecharacterizationofwastesbasedontheirleachingcharacteristics.1.6Thistestmethodhasthefollowinglimitations1.6.1Maximumparticlesizeis10mm(0.4in.).Particlesizereductionisnotrecommended.Large-diametermaterial(cinders,rocks,andsoforth)shouldberemovedpriortopackingthecolumntoensureadequatecompaction.1.6.2Testmaterialscontainingdenselyimmiscibleorganicmaterialmayresultinphaseseparationandleadtocolumnplugging.1.6.3Thistestmethoddoesnotdifferentiatebetweendissolvedconstituentsandsub-70-mparticulatesthatpassthroughtheporesoftheendplates.1.6.4Thistestmethodisnotapplicabletotheleachabilitycharacterizationofmaterialswithregardtovolatilecompounds.1.6.5Thistestmethodisnotapplicabletothecharacterizationofmaterialsthatdissolveinwatertoadegreethatsignificantlyimpactsthevoidvolumeinthecolumnorthedeterminationofthespecificgravityofthematerial.1.7Applicationofthistestmethodtomaterialswithinitiallowpermeability,ortothosethatlosepermeabilityoverthecourseofthetest,mayresultinlongtestingperiods.1.8ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareinapproximateinch-poundequivalents.1.9Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Z13
【国际标准分类号】:13_030_40
【页数】:8P.;A4
【正文语种】: