Designation:D4420–94(Reapproved1999)e1AnAmericanNationalStandardStandardTestMethodforDeterminationofAromaticsinFinishedGasolinebyGasChromatography1ThisstandardisissuedunderthefixeddesignationD4420;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(e)indicatesaneditorialchangesincethelastrevisionorreapproval.e1NOTE—WarningstatementsweremadepartofthetextinNovember1999.1.Scope1.1Thistestmethodprovidesforthedeterminationofbenzene,toluene,C8,C9andheavieraromatics,andtotalaromaticsinfinishedmotorgasoline.Itisalsoapplicabletogasolineblendingcomponents.NOTE1—Foranalysisofgasolinesforbenzeneandtoluene,solely,TestMethodD3606canbeused.1.2Thistestmethodisapplicabletothefollowingconcen-trationranges,inliquidvolumepercent,fortheindividualaromaticslistedabove:benzene,0.1to5;toluene,1to20;C8,3to25;C9andheavier,5to30,andtotalaromatics,10to80.1.3Ithasnotbeendeterminedwhetherthistestmethodisapplicabletogasolinecontainingoxygenates;forexample,ethersandalcohols.1.4Resultsarereportedtothenearest0.1%byliquidvolume.1.5ThevaluesstatedinSIunitsaretoberegardedasthestandard.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.ForspecificprecautionarystatementsseeSections6.1through6.8and7.1.2.ReferencedDocuments2.1ASTMStandards:D3606TestMethodforDeterminationofBenzeneandTolueneinFinishedMotorandAviationGasolinebyGasChromatography2D4057PracticeforManualSamplingofPetroleumandPetroleumProducts2D4307PracticeforPreparationofLiquidBlendsforUseasAnalyticalStandards2E260PracticeforPackedColumnGasChromatography33.SummaryofTestMethod3.1Atwo-columnchromatographicsystemconnectedtoadual-filamentthermalconductivitydetector(ortwosingle-filamentdetectors)isused.Areproduciblevol...
