Designation:D4922−09StandardTestMethodforDeterminationofRadioactiveIroninWater1ThisstandardisissuedunderthefixeddesignationD4922;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoversthedeterminationof55Feinthepresenceof59Febyliquidscintillationcounting.Thea-prioriminimumdetectableconcentrationforthistestmethodis7.4Bq/L.21.2Thistestmethodwasdevelopedprincipallyforthequantitativedeterminationof55Fe.However,afterpropercali-brationoftheliquidscintillationcounterwithreferencestan-dardsofeachnuclide,59Femayalsobequantified.1.3ThistestmethodwasusedsuccessfullywithTypeIIIreagentwaterconformingtoSpecificationD1193.Itistheresponsibilityoftheusertoensurethevalidityofthistestmethodforwatersofuntestedmatrices.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.Foraspecifichazardstatement,seeSection9.2.ReferencedDocuments2.1ASTMStandards:3D1068TestMethodsforIroninWaterD1129TerminologyRelatingtoWaterD1193SpecificationforReagentWaterD2777PracticeforDeterminationofPrecisionandBiasofApplicableTestMethodsofCommitteeD19onWaterD3370PracticesforSamplingWaterfromClosedConduitsD5847PracticeforWritingQualityControlSpecificationsforStandardTestMethodsforWaterAnalysisD7282PracticeforSet-up,Calibration,andQualityControlofInstrumentsUsedforRadioactivityMeasurements3.Terminology3.1Definitions—Fordefinitionsoftermsusedinthistestmethod,refertoTerminologyD1129.FortermsnotdefinedinthistestmethodorinTerminologyD1129,refertootherpublishedglossaries.44.SummaryofTestMethod4.1Thistestmethoddescribestheeffectiveseparationofironfromtheinterferingcationsofmanganese,cobalt,zirconium,niob...
