.ASTMD2579ô?111075751000262Y19:-----AMERICANSOCIETYFORTESTINGANDMATERIALS1916RaceSt.,Philadelphia,Pa.19103ReprintedfromtheAnnualBookofASTMStandards,CopyrightASTMIfnotlistedinthecurrentcombinedindex,willappearinthenextedition.Designation:D2599-87@Designation:228/79StandardTestMethodforLeadInGasolinebyX-RaySpectrometry'ThisstandardisissuedunderthefixeddesignationD2599;thenumberimmediatelyfollowingthedesignationindicatestheyearofor¡&aladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(e)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisisalsoastandardoftheInstituteofPetroleumissuedunderthefKeddesignationIP228/72.Thefinalnumberindicatestheyearoflastrevision.ThesemethodswereissuedasajointASTM-IPtentativein1968.1.Scope3.1.2TestMethodB(ScatteredTungstenRadiation1.1ThesetestmethodscoverthedeterminationoftheMethod)-TheratioOfthenetx-rayintensityOftheleadtotalleadcontentofagasolinewithinthefollowingconcen-radiationtothenetintensityoftheincoherentlytrationranges:scatteredtungstenGalradiationisobtainedonaportionofthesample.Theleadcontentisdeterminedbymultiplyingthisratiobyacalibrationfactorobtainedwithastandardleadsolutionoftetraethylleadinisooctane.0.10to5.00gPb/USgal0.12to6.00gPb/UKgal0.026to1.32gPb/LThesetestmethodscompensatefornormalvariationingasolinecompositionandareindependentofleadalkyltype.1.2Thisstandardmayinvolvehazardousmaterials,oper-ations,andequipment.Thisstandarddoesnotpurporttoaddressallofthesafetyproblemsassociatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicability-ofregulatorylimitationspriortouse.Forspecifichazardstatements,see5.I,6.3,6.5,10.1,11.1,and12.2.1.3ThevaluesstatedingPb/USgalarethepreferredunitsintheUnitedStates.Notethatinothercountries,otherunitsmaybepreferred.2.ReferencedDocuments2.1ASTMStandards:D3341TestMethodforLeadinGasoline-IodineMonochlorideMethod'3.SummaryofTestMethods3.1...
