Designation:D8026−16StandardPracticeforDeterminationofTc-99inWaterbyInductivelyCoupledPlasmaMassSpectrometry(ICP-MS)1ThisstandardisissuedunderthefixeddesignationD8026;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Technetiumisseparatedandconcentratedfromawatersamplebyextractionchromatographyusingitschemicalanalog,rhenium,asatracer.Theratiooftechnetiumtorheniumismeasuredbyinductivelycoupledplasmamassspectrometry(ICP-MS)tothenquantifythe99Tcconcentration.1.1.1ThispracticeisprovidedasanalternativetoTestMethodD7168whichprovidesforadifferentseparationmediageometryandmeasurementbyliquidscintillationspectrom-etry.Similardetectionlimitsshouldbeattainablebythismethod.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2C1387GuidefortheDeterminationofTechnetium-99inSoilD1129TerminologyRelatingtoWaterD1193SpecificationforReagentWaterD2777PracticeforDeterminationofPrecisionandBiasofApplicableTestMethodsofCommitteeD19onWaterD5847PracticeforWritingQualityControlSpecificationsforStandardTestMethodsforWaterAnalysisD7168TestMethodfor99TcinWaterbySolidPhaseExtrac-tionDiskD7902TerminologyforRadiochemicalAnalyses3.Terminology3.1Definitions:3.1.1Fordefinitionsoftermsusedinthisstandard,refertoTerminologiesD1129andD7902.4.SummaryofPractice4.1AknownquantityofReisaddedtoaknownvolumeofafilteredwatersample.ThesampleisheatedinthepresenceofperoxidetoensuretheTcandReareintheoxidizedform.TheTcandRearethenextractedfromthesampleusinganextractionchromato...
