Designation:D3986−11StandardTestMethodforBariuminBrines,Seawater,andBrackishWaterbyDirect-CurrentArgonPlasmaAtomicEmissionSpectroscopy1ThisstandardisissuedunderthefixeddesignationD3986;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thistestmethodcoversthedeterminationofdissolvedandtotalrecoverablebariuminbrines,seawater,andbrackishwatersbydirect-currentargonplasmaatomicemissionspec-troscopy(DCP–AES).1.2Thistestmethodhasbeentestedintherangefrom10mg/Lto20mg/L.Samplesshallbedilutedtocontainconcen-trationswithinthecalibrationrange(see11.1and12.5).Higherconcentrationscanalsobedeterminedbychangingtoalesssensitiveemissionline.1.3ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D1129TerminologyRelatingtoWaterD1193SpecificationforReagentWaterD3352TestMethodforStrontiumIoninBrackishWater,Seawater,andBrinesD3370PracticesforSamplingWaterfromClosedConduitsD5847PracticeforWritingQualityControlSpecificationsforStandardTestMethodsforWaterAnalysisE1097GuideforDirectCurrentPlasma-AtomicEmissionSpectrometryAnalysis3.Terminology3.1Defenitions—FordefinitionsoftermsusedinthistestmethodrefertoTerminologyD1129.3.2DefinitionsofTermsSpecifictoThisStandard:3.2.1totalrecoverablebarium,n—recoverablebariumformsthataredeterminablebythedigestionmethodthatisincludedintheprocedure.3.2.2laboratorycontrolsample,n—asolutionwithacerti-fiedconcentrationofbarium.4.SummaryofTestMethod4.1Thistestmethodisdependentuponexcitationofthebariumatombyadirect-curre...
