Designation:D7861−14StandardTestMethodforDeterminationofFattyAcidMethylEsters(FAME)inDieselFuelbyLinearVariableFilter(LVF)ArrayBasedMid-InfraredSpectroscopy1ThisstandardisissuedunderthefixeddesignationD7861;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethoddeterminesfattyacidmethylesters(FAMEorbiodiesel)indieselfueloils.FAMEcanbequantitativelydeterminedfrom1.0%to30.0%byvolume.Thistestmethoduseslinearvariablefilter(LVF)arraybasedmid-infraredspectroscopyformonitoringFAMEconcentra-tion.NOTE1—SeeSection6foralistofinterferencesthatcouldaffecttheresultsproducedfromthismethod.1.2Thistestmethodusesahorizontalattenuatedtotalreflectance(HATR)crystalandaunivariatecalibration.1.3ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D975SpecificationforDieselFuelOilsD1298TestMethodforDensity,RelativeDensity,orAPIGravityofCrudePetroleumandLiquidPetroleumProd-uctsbyHydrometerMethodD4052TestMethodforDensity,RelativeDensity,andAPIGravityofLiquidsbyDigitalDensityMeterD4057PracticeforManualSamplingofPetroleumandPetroleumProductsD4177PracticeforAutomaticSamplingofPetroleumandPetroleumProductsD4307PracticeforPreparationofLiquidBlendsforUseasAnalyticalStandardsD5854PracticeforMixingandHandlingofLiquidSamplesofPetroleumandPetroleumProductsD6299PracticeforApplyingStatisticalQualityAssuranceandControlChartingTechniquestoEvaluateAnalyticalMeasurementSystemPerformanceD6300PracticeforDeterminationofPrecisionandBiasDataforUseinTestMethodsfor...
