Designation:D1983–90(Reapproved1995)e1AnAmericanNationalStandardStandardTestMethodforFattyAcidCompositionbyGas-LiquidChromatographyofMethylEsters1ThisstandardisissuedunderthefixeddesignationD1983;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(e)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheDepartmentofDefense.e1NOTE—UnitofmeasurementstatementaddededitoriallyinMay1995.1.Scope1.1Thistestmethodestablishesstandardconditionsfortheseparationandidentificationofmethylestersbygas-liquidchromatography.1.2Thistestmethodisapplicabletoanimalandvegetablefattyacidsandoilshaving8to24carbonatoms.Theuseofthepolyesterliquidphasefacilitatestheseparationofboththesaturatedandvariousunsaturatedfattyacidmethylestersonthechromatogramobtained.1.3Theconditionsspecifiedinthistestmethodarenotsuitablefordeterminingepoxyandoxidizedfattyacidsnortofattyacidsthathavebeenpolymerized.SeealsoTestMethodsD2800andD3457.1.4ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:D2800TestMethodforPreparationofMethylEstersfromOilsforDeterminationofFattyAcidCompositionbyGas-LiquidChromatography2D3457TestMethodforPreparationofMethylEstersfromFattyAcidsforDeterminationofFattyAcidCompositionbyGas-LiquidChromatography23.SignificanceandUse3.1Thistestmethodprovidesameansforidentifyingvegetableoilsastotypebycomparingtoknownstandards.Itcanalsobeusedtodetectadulterationofonevegetableoilbyanother.3.2Theamountortheproportionofonespecificacidcanbeusedforspecificationpurposes,forexample,theam...
