Designation:D5622−95(Reapproved2011)StandardTestMethodsforDeterminationofTotalOxygeninGasolineandMethanolFuelsbyReductivePyrolysis1ThisstandardisissuedunderthefixeddesignationD5622;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thesetestmethodscoverthequantitativedeterminationoftotaloxygeningasolineandmethanolfuelsbyreductivepyrolysis.1.2Precisiondataareprovidedfor1.0to5.0mass%oxygeningasolineandfor40to50mass%oxygeninmethanolfuels.1.3Severaltypesofinstrumentscanbesatisfactoryforthesetestmethods.Instrumentscandifferinthewaythattheoxygen-containingspeciesisdetectedandquantitated.How-ever,thesetestmethodsaresimilarinthatthefuelispyrolyzedinacarbon-richenvironment.1.4ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D1298TestMethodforDensity,RelativeDensity(SpecificGravity),orAPIGravityofCrudePetroleumandLiquidPetroleumProductsbyHydrometerMethodD4052TestMethodforDensity,RelativeDensity,andAPIGravityofLiquidsbyDigitalDensityMeterD4057PracticeforManualSamplingofPetroleumandPetroleumProductsD4815TestMethodforDeterminationofMTBE,ETBE,TAME,DIPE,tertiary-AmylAlcoholandC1toC4Alco-holsinGasolinebyGasChromatography2.2OtherStandards:CleanAirAct(1992)33.SummaryofTestMethod3.1Afuelspecimenof1to10µLisinjectedbysyringeintoa950to1300°Chigh-temperaturetubefurnacethatcontainsmetallizedcarbon.Oxygen-containingcompoundsarepyro-lyzed,andtheoxygenisquantitativelyconvertedintocarbonmonoxide.3.2Acarriergas,suchasnitrogen,helium,orahelium/hydroge...
