ASTM D7576-2010 气相色谱法测定改性燃料乙醇中的苯和总芳香烃含量的标准试验方法

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【英文标准名称】:StandardTestMethodforDeterminationofBenzeneandTotalAromaticsinDenaturedFuelEthanolbyGasChromatography
【原文标准名称】:气相色谱法测定改性燃料乙醇中的苯和总芳香烃含量的标准试验方法
【标准号】:ASTMD7576-2010
【标准状态】:现行
【国别】:美国
【发布日期】:2010
【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】:aromatics;benzene;denaturedfuelethanol;ethylbenzene;gaschromatography;toluene;xylenes
【摘要】:Regulationsinsomejurisdictions,suchasCalifornia,limittheconcentrationofbenzeneandtotalaromaticcontentofdenaturedfuelethanolinordertoreducetheozonereactivityandtoxicityofautomotiveevaporativeandexhaustemissions.Resultsfromthistestmethodmaybeusedtoassessproductqualityandtomeetnewfuelregulations.1.1Thistestmethodcoversthedeterminationofbenzeneandtotalaromaticsinfinisheddenaturedfuelethanolbygaschromatography.1.2Totalaromaticsaredeterminedbyaddingtheconcentrationsofbenzene,toluene,ethylbenzene,o-xylene,m-xylene,p-xylene,andC9andheavieraromatics.1.3Thearomatichydrocarbonsareseparatedwithoutinterferencesfromotherhydrocarbonsindenaturedfuelethanol.Nonaromatichydrocarbonshavingboilingpointgreaterthanthatofn-dodecanecancauseinterferenceswiththedeterminationoftheC9andheavieraromatics.FortheC8aromatics,p-xyleneandm-xyleneco-elutewhileethylbenzeneando-xyleneareseparated.TheC9andheavieraromaticsaredeterminedasasinglegroup.1.4Thistestmethodcoversthefollowingconcentrationranges:benzene,0.01to0.06vol%andtotalaromatics,0.25to2.10vol%.1.5Resultsarereportedtothenearest0.01%bymassorliquidvolume.1.6ThevaluesstatedinSIunitsaretoberegardedasstandard.Thevaluesgiveninparenthesesareprovidedforinformationonly;theymaynotbeexactequivalents.1.7Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:G17
【国际标准分类号】:75_160_20
【页数】:9P.;A4
【正文语种】:英语