ANSI/ASTM D6730-2001 采用100米毛细管高分辨气相色谱法测定火花点燃式发动机燃料中单个元素的方法

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【英文标准名称】:TestMethodforDeterminationofIndividualComponentsinSparkIgnitionEngineFuelsby100MeterCapillaryHighResolutionGasChromatography
【原文标准名称】:采用100米毛细管高分辨气相色谱法测定火花点燃式发动机燃料中单个元素的方法
【标准号】:ANSI/ASTMD6730-2001
【标准状态】:作废
【国别】:美国
【发布日期】:2001
【实施或试行日期】:
【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】:机动车燃料;测试方法;汽油;气相色谱法;试验方法
【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,individualcomponentconcentrationsandprecisionaredeterminedintherangefrom0.01toapproximately30mass%.Thetestmethodmaybeapplicabletohigherandlowerconcentrationsfortheindividualcomponents;however,theusermustverifytheaccuracyifthetestmethodisusedforcomponentswithconcentrationsoutsidethespecifiedranges.Thistestmethodalsodeterminesmethanol,ethanol,t-butanol,methylt-butylether(MTBE),ethylt-butylether(ETBE),andt-amylmethylether(TAME)insparkignitionenginefuelsintheconcentrationrangefrom1to30mass%.However,thecooperativestudydataprovidedinsufficientstatisticaldataforobtainingaprecisionstatementforthesecompounds.Althoughamajorityoftheindividualhydrocarbonspresentaredetermined,someco-elutionofcompoundsisencountered.Ifthistestmethodisutilizedtoestimatebulkhydrocarbongroup-typecomposition(PONA),theuserofsuchdatashouldbecautionedthatsomeerrorwillbeencounteredduetoco-elutionandalackofidentificationofallcomponentspresent.Samplescontainingsignificantamountsofnaphthenic(forexample,virginnaphthas)constituentsaboven-octanemayreflectsignificanterrorsinPONA-typegroupings.Basedonthegasolinesamplesintheinterlaboratorycooperativestudy,thistestmethodisapplicabletosamplescontaininglessthan25mass%ofolefins.However,someinterferingco-elutionwiththeolefinsaboveCispossible,particularlyifblendingcomponentsortheirhigherboilingcutssuchasthosederivedfromfluidcatalyticcracking(FCC)areanalyzed,andthetotalolefincontentmaynotbeaccurate.AnnexA1ofthistestmethodcomparesresultsofthetestmethodwithothertestmethodsforselectedcomponents,includingolefins,andseveralgrouptypesforseveralinterlaboratorycooperativestudysamples.Althoughbenzene,toulene,andseveraloxygenatesaredetermined,whendoubtfulastotheanalyticalresultsofthesecomponents,confirmatoryanalysescanbeobtainedbyusingthespecifictestmethodslistedinthereferencesection.Totalolefinsinthesamplesmaybeobtainedorconfirmed,orboth,ifnecessary,byTestMethodD1319(volume%)orothertestmethods,suchasthosebasedonmultidimentionalPONA-typeofinstruments.Ifwaterisorissuspectedofbeingpresent,itsconcentrationmaybedetermined,ifdesired,bytheuseofTestMethodD1744orequivalent.Othercompoundscontainingoxygen,sulfur,nitrogen,andsoforth,mayalsobepresent,andmayco-elutewiththehydrocarbons.Ifdeterminationofthesespecificcompoundsisrequired,itisrecommendedthattestmethodsforthesespecificmaterialsbeused,suchasTestMethodsD4815andD5599foroxygenates,andTestMethodD5623forsulfurcompounds,orequivalent.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