Designation:C761−11StandardTestMethodsforChemical,MassSpectrometric,Spectrochemical,Nuclear,andRadiochemicalAnalysisofUraniumHexafluoride1ThisstandardisissuedunderthefixeddesignationC761;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thesetestmethodscoverorgivereferencetoproce-duresforsubsamplingandforchemical,massspectrometric,spectrochemical,nuclear,andradiochemicalanalysisofura-niumhexafluoride(UF6).MostofthesetestmethodsareinroutineusetodetermineconformancetoUF6specificationsintheEnrichmentandConversionFacilities.1.2Theanalyticalproceduresinthisdocumentappearinthefollowingorder:NOTE1—SubcommitteeC26.05willconferwithC26.02concerningtherenumberedsectioninTestMethodsC761todeterminehowconcernswithrenumberingthesesectionsarebestaddressedinsubsequentpubli-cationsasanalyticalmethodsarereplacedwithstand-aloneanalyticalmethods.SectionsSubsamplingofUraniumHexafluoride7GravimetricDeterminationofUranium8–16TitrimetricDeterminationofUranium17PreparationofHigh-PurityU3O818IsotopicAnalysis19DeterminationofHydrocarbons,Chlorocarbons,andPartiallySubstitutedHalohydrocarbons20–26DeterminationofAntimony27DeterminationofBromine28DeterminationofChlorine29–35DeterminationofSiliconandPhosphorus36–42DeterminationofBoronandSilicon43DeterminationofRuthenium44DeterminationofTitaniumandVanadium45SpectrographicDeterminationofMetallicImpurities46DeterminationofTungsten47DeterminationofThoriumandRareEarths48DeterminationofMolybdenum49AtomicAbsorptionDeterminationofMetallicImpurities50–55ImpurityDeterminationbySpark-SourceMassSpectrography56DeterminationofBoron-EquivalentNeutronCrossSection57DeterminationofUranium-233AbundancebyThermalIonizationMassSpectrometry58DeterminationofUranium-232byAlphaSpectrometry59–65DeterminationofFissionProductActivity66DeterminationofPlu...
