Designation:D7212−13(Reapproved2018)StandardTestMethodforLowSulfurinAutomotiveFuelsbyEnergy-DispersiveX-rayFluorescenceSpectrometryUsingaLow-BackgroundProportionalCounter1ThisstandardisissuedunderthefixeddesignationD7212;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodspecifiesanenergy-dispersiveX-rayfluorescence(EDXRF)methodforthedeterminationofthetotalsulfurcontentofautomotivefuelswithaconcentrationrangefrom7mg/kgto50mg/kg.1.1.1Thepooledlimitofquantitationofthistestmethodasobtainedbystatisticalanalysisofinterlaboratorytestresultsis7mg⁄kgsulfur.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thepreferredconcentrationunitsaremg/kgsulfur.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.4Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D4045TestMethodforSulfurinPetroleumProductsbyHydrogenolysisandRateometricColorimetryD4057PracticeforManualSamplingofPetroleumandPetroleumProductsD4177PracticeforAutomaticSamplingofPetroleumandPetroleumProductsD6299PracticeforApplyingStatisticalQualityAssuranceandControlChartingTechniquestoEvaluateAnalyticalMeasurementSystemPerformanceD6300PracticeforDeterminationofPrecisionandBiasDataforUseinTestMethodsforPetroleumProductsandLubricantsD6792PracticeforQualityManagementSystemsinPetro-leumProducts,LiquidFuels,andLubricantsTes...
