【英文标准名称】:StandardTestMethodforAlpha-AndBeta-ActivityinWaterByLiquidScintillationCounting
【原文标准名称】:用液体闪烁计数法测定水中α和β放射性的标准试验方法
【标准号】:ASTMD7283-2006
【标准状态】:现行
【国别】:
【发布日期】:2006
【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】:D19.04
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:计数;液体闪烁计数;测量;辐射性;闪烁计数器;测试;水
【英文主题词】:grossalpharadioactivity;grossbetaradioactivity;grossradioactivitymeasurement;liquidscintillationcounter;water
【摘要】:Thistestmethodisintendedforthemeasurementofgrossalpha-andbeta-activityconcentrationsintheanalysesofenvironmentalanddrinkingwaters.Thistestmethodisalsoapplicabletothedirectanalysisofgrossalpha-andbeta-activityconcentrationsinwaterwhenlowdetectionlimitsarenotrequired.Directanalysisprovidesarapidmethodfordeterminationofgrossalpha-andbeta-activityconcentrationswhenlowdetectionlimitsarenotrequired.Thistestmethodisnotcapableofdiscriminatingamongalphaemittingradionuclidesoramongbetaemittingradionuclides.Thoseintendingtoidentifyandquantifyspecificradionuclidesshouldusetestmethodsspecifictotheradionuclidesofinterest.Thistestmethodmaynotbecitedasamethodforthedeterminationofgrossalpha-orbeta-activityconcentrationsinasolid/soilmatrixortheaciddigestateofthesame.Theuseofthistestmethodforsuchapplicationsbringsthepotentialforseriousbiasandincomparabilityofresultsdependentonthemannerofsamplepreparationortreatment,orboth.1.1Thistestmethodcoversthemeasurementofgrossalpha-andbeta-activityconcentrationsinahomogeneouswatersample.Itisapplicabletoalphaemitterswithactivityconcentrationlevelsabove0.037Bq/L(1pCi/L)andbetaemitterswithactivityconcentrationlevelsabove0.15Bq/L(4pCi/L).Thistestmethodisnotapplicabletosamplescontainingradionuclidesthatarevolatileunderconditionsoftheanalysis.1.2Thistestmethodmayalsobeusedforthedirectmeasurementofgrossalpha-andbeta-activityconcentrationsinhomogeneouswatersampleswithalphaemitteractivityconcentrationlevelsabove1.8Bq/L(50pCi/L)andbetaemitteractivityconcentrationlevelsabove3.7Bq/L(100pCi/L).1.3Thistestmethodwastestedusingasingle-operatortest.Round-robintestingiscurrentlyinprogressonthistestmethod.1.4StandardmethodsunderthejurisdictionofASTMCommitteeD19maybepublishedforalimitedtimepreliminarytothecompletionoffullcollaborativestudyvalidation.SuchstandardsaredeemedtohavemetallotherD19qualifyingrequirementsbuthavenotcompletedtherequiredvalidationstudiestofullycharacterizetheperformanceoftheTestMethodacrossmultiplelaboratoriesandmatrices.Preliminarypublicationisdonetomakecurrenttechnologyaccessibletousersofstandards,andtosolicitadditionalinputfromtheusercommunity.1.5ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:F74
【国际标准分类号】:17_240
【页数】:10P.;A4
【正文语种】: