Designation:D7212−13StandardTestMethodforLowSulfurinAutomotiveFuelsbyEnergy-DispersiveX-rayFluorescenceSpectrometryUsingaLow-BackgroundProportionalCounter1ThisstandardisissuedunderthefixeddesignationD7212;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thistestmethodspecifiesanenergy-dispersiveX-rayfluorescence(EDXRF)methodforthedeterminationofthetotalsulfurcontentofautomotivefuelswithaconcentrationrangefrom7mg/kgto50mg/kg.1.1.1Thepooledlimitofquantitationofthistestmethodasobtainedbystatisticalanalysisofinterlaboratorytestresultsis7mg/kgsulfur.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thepreferredconcentrationunitsaremg/kgsulfur.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D4045TestMethodforSulfurinPetroleumProductsbyHydrogenolysisandRateometricColorimetryD4057PracticeforManualSamplingofPetroleumandPetroleumProductsD4177PracticeforAutomaticSamplingofPetroleumandPetroleumProductsD6299PracticeforApplyingStatisticalQualityAssuranceandControlChartingTechniquestoEvaluateAnalyticalMeasurementSystemPerformanceD6300PracticeforDeterminationofPrecisionandBiasDataforUseinTestMethodsforPetroleumProductsandLubricantsD6792PracticeforQualitySysteminPetroleumProductsandLubricantsTestingLaboratoriesD7343PracticeforOptimization,SampleHandling,Calibration,andValidationofX-rayFluorescenceSpec-trometryMethodsforElementalAnalysisofPetroleumProductsandLubricantsE29PracticeforUsingSignificantDigitsinTestDatatoDetermineConformancewithSpecifications3.Terminology3.1DefinitionsofTermsSpecifictoThisStandard:3.1.1lowbackgroundprop...
