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【英文标准名称】:TestMethodfortheDeterminationofIndividualComponentsinSparkIgnitionEngineFuelsby100MeterCapillary(WithPrecolumn)HighResolutionGasChromatography
【原文标准名称】:用100米毛细管(带前柱管)高分辨率气相色谱法测定火花点燃式发动机燃料中单个成分的试验方法
【标准号】:ANSI/ASTMD6729-2004
【标准状态】:作废
【国别】:美国
【发布日期】:2004
【实施或试行日期】:2004-11-01
【发布单位】:美国国家标准学会(US-ANSI)
【起草单位】:ANSI
【标准类型】:()
【标准水平】:()
【中文主题词】:气相色谱法;汽油;试验方法;机动车燃料
【英文主题词】:Automotivefuels;Capillary;Components;Determination;Fuels;Gaschromatography;Gases;Gasoline;Ignition;Individual;Liquidfuels;Meterprovers;Resolution;Sparkignitions;Spark-ignitionengines;Testmethods;Testing
【摘要】:Thistestmethodcoversthedeterminationofindividualhydrocarboncomponentsofspark-ignitionenginefuelsandtheirmixturescontainingoxygenateblends(MTBE,ETBE,ethanol,andsoforth)withboilingrangesupto225?C.Otherlightliquidhydrocarbonmixturestypicallyencounteredinpetroleumrefiningoperations,suchasblendingstocks(naphthas,reformates,alkylates,andsoforth)mayalsobeanalyzed;however,statisticaldatawasobtainedonlywithblendedspark-ignitionenginefuels.Basedonthecooperativestudyresults,individualcomponentconcentrationsandprecisionaredeterminedintherangeof0.01toapproximately30mass%.Theproceduremaybeapplicabletohigherandlowerconcentrationsfortheindividualcomponents;however,theusermustverifytheaccuracyiftheprocedureisusedforcomponentswithconcentrationsoutsidethespecifiedranges.Thetestmethodalsodeterminesmethanol,ethanol,t-butanol,methylt-butylether(MTBE),ethylt-butylether(ETBE),t-amylmethylether(TAME)insparkignitionenginefuelsintheconcentrationrangeof1to30mass%.However,thecooperativestudydataprovidedsufficientstatisticaldataforMTBEonly.Althoughamajorityoftheindividualhydrocarbonspresentaredetermined,someco-elutionofcompoundsisencountered.Ifthistestmethodisutilizedtoestimatebulkhydrocarbongroup-typecomposition(PONA)theuserofsuchdatashouldbecautionedthatsomeerrorwillbeencounteredduetoco-elutionandalackofidentificationofallcomponentspresent.Samplescontainingsignificantamountsofolefinicornaphthenic(forexample,virginnaphthas),orboth,constituentsaboven-octanemayreflectsignificanterrorsinPONAtypegroupings.Basedonthegasolinesamplesintheinterlaboratorycooperativestudy,thisprocedureisapplicabletosamplescontaininglessthan25mass%ofolefins.However,someinterferingcoelutionwiththeolefinsaboveCispossible,particularlyifblendingcomponentsortheirhigherboilingcutssuchasthosederivedfromfluidcatalyticcracking(FCC)areanalyzed,andthetotalolefincontentmaynotbeaccurate.Totalolefinsinthesamplesmaybeobtainedorconfirmed,orboth,ifnecessary,byTestMethodD1319(volume%)orothertestmethods,suchasthosebasedonmultidimensionalPONAtypeofinstruments.Ifwaterisorissuspectedofbeingpresent,itsconcentrationmaybedetermined,ifdesired,bytheuseofTestMethodD1744,orequivalent.Othercompoundscontainingoxygen,sulfur,nitrogen,andsoforth,mayalsobepresent,andmayco-elutewiththehydrocarbons.Ifdeterminationofthesespecificcompoundsisrequired,itisrecommendedthattestmethodsforthesespecificmaterialsbeused,suchasTestMethodsD4815andD5599foroxygenates,andD5623forsulfurcompounds,orequivalent.AnnexA1ofthistestmethodcomparesresultsofthetestprocedurewithothertestmethodsforselectedcomponents,includingolefins,andseveralgrouptypesforseveralinterlaboratorycooperativestudysamples.Althoughbenzene,toluene,andseveraloxygenatesaredetermined,whendoubtfulastotheanalyticalresultsofthesecomponents,confirmatoryanalysescanbeobtainedbyusingspecifictestmethods.ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareprovidedforinformationpurposesonly.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:E31
【国际标准分类号】:75_160_20
【页数】:
【正文语种】:英语