Designation:D8368−22StandardTestMethodforDeterminationofTotalsofAromatic,PolyaromaticandFattyAcidMethylEsters(FAME)ContentofDieselFuelUsingGasChromatographywithVacuumUltravioletAbsorptionSpectroscopyDetection(GC-VUV)1ThisstandardisissuedunderthefixeddesignationD8368;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thistestmethodcoversastandardprocedureforthedeterminationofgrouptypetotalsofaromatic,polyaromatic,andFAMEcontentindieselfuelusinggaschromatographyandvacuumultravioletabsorptionspectroscopydetection(GC-VUV).1.1.1Polyaromatictotalsaretheresultofthesummationofdiaromaticandtri-plusaromaticgrouptypes.Aromaticsarethesummationofmonoaromaticandpolyaromaticgrouptypes.FAMEcontentistheresultofsummationofindividualfattyacidmethylesters.1.1.2Thistestmethodisapplicableforrenewabledieselfuelsfromhydrotreatedvegetableoil(HVO)oranimalfat,gastoliquid(GTL)diesel,lightcycleoil,wideboilingrangearomaticsolventsandbiodieselblends.1.2Concentrationsofgrouptypetotalsaredeterminedbypercentmassorpercentvolume.Theapplicableworkingrangesareasfollows:TotalAromatics%Volume0.088to77.000TotalAromatics%Mass0.104to79.451MonoAromatics%Mass0.076to67.848Diaromatics%Mass0.027to34.812Tri-plusaromatics%Mass0.45to6.77PAH%Mass0.028to41.586FAME%Volume1.08to21.671.3Dieselfuelcontainingbiodiesel,(FAME,thatis,fattyacidmethylestersincludingsoymethylesters,rapeseedmethylesters,tallowmethylestersandcanolamethylesters)canbeanalyzedbythistestmethod.TheFAMEcomponentcompletelyelutesfromtheanalyticalcolumnindependentoffeedstock.1.4Individualhydrocarboncomponentsarenotreportedbythistestmethod;however,anyindividualcomponentdetermi-nationsareincludedintheappropriatesummationofthetotalsofaromatic,polyaromatic,monoaromatic,diaromatic,tri-plusaromatic,orFAMEgroups.1.4.1Individualcomponentsaretypica...
