ASTM D4646-2003(2008) 24小时分批测量土壤和沉积物的污染物吸附作用的标准试验方法

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【英文标准名称】:StandardTestMethodfor24-hBatch-TypeMeasurementofContaminantSorptionbySoilsandSediments
【原文标准名称】:24小时分批测量土壤和沉积物的污染物吸附作用的标准试验方法
【标准号】:ASTMD4646-2003(2008)
【标准状态】:现行
【国别】:美国
【发布日期】:2003
【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】:D34.01.06
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:Organiccompounds--water;Oxidation-reductionpotential(ORP);Physicochemicalprocesses;PCBs(polychlorinatedbiphenyls);Photodegradation;Resourcerecovery;Rotarysolidwasteextractor;Sedimenttoxicitytesting;Soil;Solutesorption;Sorptioncapac
【摘要】:Thistestmethodismeanttoallowforarapid(24h)indexofageomedia''ssorptionaffinityforgivenchemicalsorleachateconstituents.Alargenumberofsamplesmayberunusingthistestmethodtodetermineacomparativerankingofthosesamples,basedupontheamountofsolutesorbedbythegeomedia,orbyvariousgeomediaorleachateconstituents.The24-htimeisusedtomakethetestconvenientandalsotominimizemicrobialdegradationwhichmaybeaprobleminlonger-timedprocedures.WhileKdvaluesaredirectlyapplicableforscreeningandcomparativerankingpurposes,theiruseinpredictivefieldapplicationsgenerallyrequirestheassumptionthatKdbeafixedvalue.Whilethistestmethodmaybeusefulindetermining24-hKdvaluesfornonvolatileorganicconstituents,interlaboratorytestinghasbeencarriedoutonlyforthenonvolatileinorganicspecies,arsenicandcadmium.However,theprocedurehasbeentestedforsinglelaboratoryprecisionwithpolychlorinatedbiphenyls(PCBs)andisbelievedtobeusefulforallstableandnonvolatileinorganic,andorganicconstituents.Thistestmethodisnotconsideredappropriateforvolatileconstituents.The24-htimelimitmaybesufficienttoreachasteady-stateKd.However,toreportthisdeterminationasasteady-stateKd,thistestmethodshouldbeconductedforintermediatetimes(forexample,12,18and22h)toensurethatthesolubleconcentrationsinthesolutionhavereachedasteadystateby24h.RefertoTestMethodD4319foranalternateprocedureoflongerduration.1.1Thistestmethoddescribesaprocedurefordeterminingthesorptionaffinityofwastesolutesbyunconsolidatedgeologicmaterialinaqueoussuspension.Thewastesolutemaybederivedfromavarietyofsourcessuchaswells,underdrainsystems,orlaboratorysolutionssuchasthoseproducedbywasteextractiontestsliketheTestMethodD3987shakeextractionmethod.1.2Thistestmethodisapplicableinscreeningandprovidingrelativerankingsofalargenumberofgeomediasamplesfortheirsorptionaffinityinaqueousleachate/geomediasuspensions.Thistestmethodmaynotexactlysimulatesorptioncharacteristicsthatwouldoccurinunperturbedgeologicsettings.1.3Whilethisproceduremaybeapplicabletobothorganicandinorganicconstituents,caremustbetakenwithrespecttothestabilityoftheparticularconstituentsandtheirpossiblelossesfromsolutionbysuchprocessesasdegradationbymicrobes,light,orhydrolysis.Thistestmethodshouldnotbeusedforvolatilechemicalconstituents(see6.1).1.4ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Z18
【国际标准分类号】:13_080_05
【页数】:4P.;A4
【正文语种】:英语