Designation:C1477−08(Reapproved2014)StandardTestMethodforIsotopicAbundanceAnalysisofUraniumHexafluorideandUranylNitrateSolutionsbyMulti-Collector,InductivelyCoupledPlasma-MassSpectrometry1ThisstandardisissuedunderthefixeddesignationC1477;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoverstheisotopicabundanceanalysisof234U,235U,236Uand238Uinsamplesofhydrolysedura-niumhexafluoride(UF6)byinductivelycoupledplasmasource,multicollector,massspectrometry(ICP-MC-MS).Themethodappliestomaterialwith235Uabundanceintherangeof0.2to6%mass.ThistestmethodisalsodescribedinASTMSTP1344.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2C761TestMethodsforChemical,MassSpectrometric,Spectrochemical,Nuclear,andRadiochemicalAnalysisofUraniumHexafluorideC787SpecificationforUraniumHexafluorideforEnrich-mentC996SpecificationforUraniumHexafluorideEnrichedtoLessThan5%235UD1193SpecificationforReagentWater2.2OtherDocument:STP1344ApplicationsofInductivelyCoupledPlasma-MassSpectrometry(ICP-MS)toRadionuclideDetermi-nations33.Terminology3.1Acronyms:3.1.1amu—atomicmassunit3.1.2ICP-MC-MS—InductivelyCoupledPlasmaMulti-CollectorMassSpectrometer3.1.3ICP-MS—InductivelyCoupledPlasmaMassSpec-trometer3.1.4UIRM—UraniumIsotopicReferenceMaterial4.SummaryofTestMethod4.1Samplesarereceivedeitherintheformofuraniumhexafluoride(UF6)oraqueousuranicsolution.TheUF6samplesarehydrolysed,dilutedandacidifiedwithnitricacid.Uranicsolutionsamplesaredilutedandacid...
