Designation:D8274−20aStandardTestMethodforDeterminationofBiodiesel(FattyAcidMethylEsters)ContentinDieselFuelOilbyPortableRapidMid-InfraredAnalyzer1ThisstandardisissuedunderthefixeddesignationD8274;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thistestmethodcoversthedeterminationofthecontentofbiodiesel(fattyacidmethylesters(FAME))indieselfueloilsforvolumefractionsof0.1%to31.0%bymid-infraredanalyzerwitharesolutionof0.1%.NOTE1—ASTMandISOspecificationfuelsfallingwithinthescopeofthistestmethodincludeSpecifications:D975gradesNo.1DandNo.2D,D7467,distillategradesofD396,MIL-DTL-16884,anddistillategradesofmarinefuelspecificationISO8217.1.2TheaccuracyofthistestmethodisbasedonthemolecularweightofC16andC18FAMEspecies.1.2.1Discussion—Biodieselcontainsavarietyofspecieswithdifferentmolecularweights.TypicalmarketFAMEsfromNorthAmericaandEurope,whicharepredominantlysoy,rapeseed,andusedcookingoilderivedFAMEwereincludedinthepilotstudy.FAMEderivedfromcoconut,whichpredomi-nantlycontainsC12,willover-readbyapproximately30%.1.3Thismethodcannotdistinguishbetweenvegetableoils,animalfats,FAEE,compoundscontainingcarbonylgroups,andFAME.Formoreinformation,seeSection6.1.4Thistestmethodhasinterimrepeatabilityprecisiononly,seeSection14formoreinformation.1.5ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.7Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInterna...
