Designation:D5811−20StandardTestMethodforStrontium-90inWater1ThisstandardisissuedunderthefixeddesignationD5811;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoversthedeterminationofradioac-tive90Srinenvironmentalwatersamples(forexample,non-processandeffluentwaters)intherangeof0.037Bq/L(1.0pCi/L)orgreater.1.2Thistestmethodhasbeenusedsuccessfullywithtapwater.Itistheuser’sresponsibilitytoensurethevalidityofthistestmethodforsampleslargerthan1Landforwatersofuntestedmatrices.1.3ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.Forspecifichazardstatements,seeSection9.1.5Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D1129TerminologyRelatingtoWaterD1193SpecificationforReagentWaterD1890TestMethodforBetaParticleRadioactivityofWaterD2777PracticeforDeterminationofPrecisionandBiasofApplicableTestMethodsofCommitteeD19onWaterD3370PracticesforSamplingWaterfromFlowingProcessStreamsD3648PracticesfortheMeasurementofRadioactivityD4448GuideforSamplingGround-WaterMonitoringWellsD5673TestMethodforElementsinWaterbyInductivelyCoupledPlasma—MassSpectrometryD5847PracticeforWritingQualityControlSpecificationsforStandardTestMethodsforWaterAnalysisD6001GuideforDirect-PushGroundwaterSampli...
