ASTM D6296-1998(2008) 用多维气相色谱法测定火花点火发动机燃料中总烯烃的标准试验方法

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【英文标准名称】:StandardTestMethodforTotalOlefinsinSpark-ignitionEngineFuelsbyMultidimensionalGasChromatography
【原文标准名称】:用多维气相色谱法测定火花点火发动机燃料中总烯烃的标准试验方法
【标准号】:ASTMD6296-1998(2008)
【标准状态】:现行
【国别】:美国
【发布日期】:1998
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:D02.04.0L
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:gaschromatography;gasoline;multidimensionalgaschromatography;olefins;spark-ignitionenginefuels;Automotiveenginefuels/oils;Gaschromatography(GC)--petroleumproducts;Multi-dimensionalgaschromatography;Olefinscontent;Totalolefins
【摘要】:Thequantitativedeterminationofolefinsinspark-ignitionenginefuelsisrequiredtocomplywithgovernmentregulations.Knowledgeofthetotalolefincontentprovidesameanstomonitortheefficiencyofcatalyticcrackingprocesses.ThistestmethodprovidesbetterprecisionforolefincontentthanTestMethodD1319.Italsoprovidesdatainamuchshortertime,approximately20minfollowingcalibration,andmaximizesautomationtoreduceoperatorlabor.ThistestmethodisnotapplicabletoM85orE85fuels,whichcontain85%methanolandethanol,respectively.1.1ThistestmethodprovidesforthequantitativedeterminationoftotalolefinsintheC4toC10rangeinspark-ignitionenginefuelsorrelatedhydrocarbonstreams,suchasnaphthasandcrackednaphthas.Olefinconcentrationsintherangefrom0.2to5.0liquid-volume%ormass%,orboth,canbedetermineddirectlyontheas-receivedsamplewhereasolefinsinsamplescontaininghigherconcentrationsaredeterminedafterappropriatesampledilutionpriortoanalysis.1.2Thistestmethodisapplicabletosamplescontainingalcoholsandethers;however,samplescontaininggreaterthan15%alcoholmustbediluted.Samplescontaininggreaterthan5.0%ethermustalsobedilutedtothe5.0%orlesslevel,priortoanalysis.Whenethyl-tert-butyletherispresent,onlyolefinsintheC4toC9rangecanbedetermined.1.3Thistestmethodcannotbeusedtodetermineindividualolefincomponents.1.4ThistestmethodcannotbeusedtodetermineolefinshavinghighercarbonnumbersthanC10.Note18212;PrecisionwasdeterminedonlyonsamplescontainingMTBEandethanol.1.5ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:E31
【国际标准分类号】:
【页数】:8P.;A4
【正文语种】:英语