【英文标准名称】:StandardTestMethodforAnalysisofUrineforUranium-235andUranium-238IsotopesbyInductivelyCoupledPlasma-MassSpectrometry
【原文标准名称】:用感应耦合等离子体质谱法分析铀235和铀238同位素用尿的标准试验方法
【标准号】:ASTMC1379-2004
【标准状态】:现行
【国别】:
【发布日期】:2004
【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】:铀同位素;光谱测定法;质谱学;尿液检验;放射性同位素;等离子体;铀;生物测定;总量;尿;试验方法;浓缩;分析
【英文主题词】:bioassay;inductivelycoupledplasma-massspectrometry(ICP-MS);totaluraniumconcentration;urineanalysis
【摘要】:DOEOrder5480.11andANSIN13.30requirethatinternaldoseassessmentsbemadeaspartofthebioassayprogramfornuclearfacilityworkers.Forindirectbioassayofuraniumworkers,theuraniumisotopesmustbemeasuredalongwiththetotaluraniuminurinesamples.TheRMDAforeachuraniumisotopeis0.1pCi/L.Thismethodisapplicableformeasuring235Uand238UattheRMDA.Becauseofextremelylowmassconcentration(becauseofthehighspecificactivity),234Ucannotbemeasuredwithoutadditionalsamplepreconcentration.Note28212;Columnchromatographyseparationsandconcentrationof234Uusingmanualorflow-injectionpreconcentrationfollowedbyICP-MSisotopicdeterminationaredescribedinTestMethodsC1310andC1345.Thesemethodsfocusonenvironmentalsoilsampleanalysis,butwithsomedevelopment,maybeapplicabletodigestedurinesamples.The234Uconcentrationcanbecalculatedbasedonanenrichmentgradientforworkersinuraniumenrichmentplants,andinternaldoseassessmentscanbemade.Note38212;UseofhighresolutionICP-MSmayalsobeusedtoobtainlowerdetectionlimits,see1.1.1Thistestmethodcoversthedeterminationoftheconcentrationofuranium-235anduranium-238inurineusingInductivelyCoupledPlasma-MassSpectrometry.Thistestmethodcanbeusedtosupporturaniumfacilitybioassayprograms.1.2Thismethoddetectionlimitsfor235Uand238Uare6ng/L.TomeettherequirementsofANSIN13.30,theminimumdetectableactivity(MDA)ofeachradionuclidemeasuredmustbeatleast0.1pCi/L(0.0037Bq/L).TheMDAtranslatesto47ng/Lfor235Uand300ng/Lfor238U.Uranium-234cannotbedeterminedattheMDAwiththistestmethodbecauseofitslowmassconcentrationlevelequivalentto0.1pCi/L.1.3Thedigestionandanionseparationofurinemaynotbenecessarywhenuraniumconcentrationsofmorethan100ng/Larepresent.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.TheICP-MSisasourceofintenseultravioletradiationfromtheradiofrequencyinducedplasma.ProtectionfromradiofrequencyradiationandUVradiationisprovidedbytheinstrumentundernormaloperation.
【中国标准分类号】:F73
【国际标准分类号】:11_100
【页数】:6P.;A4
【正文语种】: