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【英文标准名称】:StandardTestMethodforUraniumandPlutoniumConcentrationsandIsotopicAbundancesbyThermalIonizationMassSpectrometry
【原文标准名称】:用热电离质谱法进行铀和钚浓度和同位素丰度的标准试验方法
【标准号】:ASTMC1625-2005
【标准状态】:现行
【国别】:
【发布日期】:2005
【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】:C26.05
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:浓缩;电离;同位素;质谱学;钚;试验;热的;铀
【英文主题词】:thermalionizationmassspectrometry;uranium,plutonium;isotoperatio;atompercent;masspercent;isotopedilutionmassspectrometry
【摘要】:Uraniumandplutoniumoxidescanbeusedasanuclear-reactorfuelintheformofpellets.Inordertobesuitableforuseasanuclearfuelthestartingmaterialmustmeetcertainspecifications,suchasfoundinC757,C833,C753,C776,C1008,orasspecifiedbythepurchaser.Theuraniumand/orplutoniumconcentrationandisotopicabundancesaremeasuredbymassspectrometryfollowingthistestmethod.Theseparatedheavyelementfractionsplacedonmassspectrometricfilamentsmustbeverypure.Thequantityrequireddependsuponthesensitivityoftheinstrumentdetectionsystem.Ifanelectronmultiplierdetectoristobeused,onlyafewnanogramsarerequired.IfaFaradaycupisused,afewmicrogramsareneeded.Chemicalpurityofthesamplebecomesmoreimportantasthesamplesizedecreases,becauseionemissionofthesampleissuppressedbyimpurities.1.1Thistestmethodcoversthedeterminationoftheconcentrationandisotopiccompositionofuraniumandplutoniuminsolutions.Thepurifieduraniumorplutoniumfromsamplesrangingfromnuclearmaterialstoenvironmentalorbioassaymatricesisloadedontoamassspectrometricfilament.Theisotopicratioisdeterminedbythermalionizationmassspectrometry,theconcentrationisdeterminedbyisotopedilution.1.2Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishsafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:F46
【国际标准分类号】:27_120_30
【页数】:6P.;A4
【正文语种】: