Designation:C1387−14StandardGuidefortheDeterminationofTechnetium-99inSoil1ThisstandardisissuedunderthefixeddesignationC1387;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisguideisintendedtoserveasareferenceforlaboratorieswishingtoperform99Tcanalysesinsoil.SeveraloptionsaregivenforselectionofatracerandforthemethodofextractingtheTcfromthesoilmatrix.SeparationofTcfromthesamplematrixisperformedusinganextractionchroma-tographyresin.Optionsarethengivenforthedeterminationofthe99Tcactivityintheoriginalsample.Itisuptotheusertodeterminewhichoptionsareappropriateforuse,andtogenerateacceptancedatatosupportthechosenprocedure.1.2Duetothevariousextractionmethodsavailable,varioustracersused,variabledetectionmethodsused,andlackofcertifiedreferencematerialsfor99Tcinsoil,thereisinsufficientdatatosupportasinglemethodwrittenasastandardmethod.1.3ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2C859TerminologyRelatingtoNuclearMaterialsC998PracticeforSamplingSurfaceSoilforRadionuclidesC999PracticeforSoilSamplePreparationfortheDetermi-nationofRadionuclidesD1193SpecificationforReagentWaterD7168TestMethodfor99TcinWaterbySolidPhaseExtrac-tionDiskE11SpecificationforWovenWireTestSieveClothandTestSieves3.Terminology3.1Fordefinitionsoftermsinthisguide,refertoTerminol-ogyC859.4.SummaryofGuide4.1Therearenostableisotopesoftechnetium.Technetium-99isproducedbythefissionofuraniumandplutonium,andhasbeenreleasedtotheenvironmentvianuclearweaponstestingandnu...
