Designation:D2549−02(Reapproved2012)StandardTestMethodforSeparationofRepresentativeAromaticsandNonaromaticsFractionsofHigh-BoilingOilsbyElutionChromatography1ThisstandardisissuedunderthefixeddesignationD2549;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoverstheseparationanddetermina-tionofrepresentativearomaticsandnonaromaticsfractionsfromhydrocarbonmixturesthatboilbetween232and538°C(450and1000°F).Alternativeproceduresareprovidedfortheseparationof2gor10gofhydrocarbonmixture.NOTE1—Somecomponentsmaynotbeelutedfromthechromato-graphiccolumnforsometypesofsamplesundertheconditionsusedinthismethod.NOTE2—TestMethodD2007isanalternativemethodofseparatinghigh-boilingoilsintopolarcompounds,aromatics,andsaturatesfractions.1.2Analternativeprocedureisprovidedtohandlesamplesboilingbelow232°C(450°F),butwhose5%pointisabove178°C(350°F)asdeterminedbyTestMethodD2887.ThisprocedureisgiveninAppendixX1.1.3ThevaluesstatedinacceptableSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareprovidedforinformationpurposesonly.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D2007TestMethodforCharacteristicGroupsinRubberExtenderandProcessingOilsandOtherPetroleum-DerivedOilsbytheClay-GelAbsorptionChromato-graphicMethodD2425TestMethodforHydrocarbonTypesinMiddleDis-tillatesbyMassSpectrometryD2786TestMethodforHydrocarbonTypesAnalysisofGas-OilSaturatesFractionsbyHighIonizingVoltageMassSpectrometryD2887TestMethodforBoilingRangeDistributionofPe-troleumFractionsbyGasChromatographyD3239TestMethodforAromaticTypesAnalysisofGas-O...
