【英文标准名称】:StandardTestMethodforDeterminationofAromaticContentandPolynuclearAromaticContentofDieselFuelsandAviationTurbineFuelsbySupercriticalFluidChromatography
【原文标准名称】:用超临界流体色谱法测定柴油和航空涡轮燃料中芳香烃含量和多核芳香烃含量的标准试验方法
【标准号】:ASTMD5186-2003
【标准状态】:现行
【国别】:
【发布日期】:2003
【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
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:试验;芳族化合物;柴油;液相色谱法;含量测定
【英文主题词】:aromatics;aromatichydrocarbons;dieselfuel;monoaromatics;polynuclear;supercriticalfluidchromatography
【摘要】:Thearomatichydrocarboncontentofmotordieselfuelsisafactorthatcanaffecttheircetanenumberandexhaustemissions.Thearomatichydrocarboncontentandthenaphthalenescontentofaviationturbinefuelsaffecttheircombustioncharacteristicsandsmoke-formingtendencies.Thesepropertiesrepresentspecificationsforaviationturbinefuels(seeSpecificationD1655).TheUnitedStatesEnvironmentalProtectionAgency(USEPA)regulatesthearomaticcontentofdieselfuels.CaliforniaAirResourcesBoard(CARB)regulationsplacelimitsonthetotalaromaticscontentandpolynucleararomatichydrocarboncontentofmotordieselfuel,thusrequiringanappropriateanalyticaldeterminationtoensurecompliancewiththeregulations.Producersofdieselfuelswillrequiresimilardeterminationsforprocessandqualitycontrol.Thistestmethodcanbeusedtomakesuchdeterminations.Thistestmethodisapplicabletomaterialsintheboilingrangeofmotordieselfuelsandisunaffectedbyfuelcoloration.TestMethodD1319,whichhasbeenmandatedbytheUSEPAforthedeterminationofaromaticsinmotordieselfuel,excludesmaterialswithfinalboilingpointsgreaterthan315x00B0;C(600x00B0;F)fromitsscope.TestMethodD2425isapplicabletothedeterminationofbothtotalaromaticsandpolynucleararomatichydrocarbonsindieselfuel,butismuchmorecostlyandtime-consumingtoperform.ResultsobtainedbythistestmethodhavebeenshowntobestatisticallymoreprecisethanthoseobtainedfromTestMethodD1319fortypicaldieselfuels,andthistestmethodhasashorteranalysistime.4Cooperativestudydata5havefoundthistestmethodtobemoreprecisethanthepublishedprecisionofTestMethodD1319whenappliedtoaviationturbinefuelsanddieselfuels.ResultsfromthistestmethodfortotalpolynucleararomatichydrocarbonsarealsoexpectedtobeatleastaspreciseasthoseofTestMethodD2425.1.1Thistestmethodcoversthedeterminationofthetotalamountsofmonoaromaticandpolynucleararomatichydrocarboncompoundsinmotordieselfuels,aviationturbinefuels,andblendstocksbysupercriticalfluidchromatography(SFC).Therangeofaromaticsconcentrationtowhichthistestmethodisapplicableisfrom1to75mass%.Therangeofpolynucleararomatichydrocarbonconcentrationstowhichthistestmethodisapplicableisfrom0.5to50mass%.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Thevaluesstatedininch-poundunitsareforinformationonly.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:E31
【国际标准分类号】:75_160_20
【页数】:6P.;A4
【正文语种】:


【英文标准名称】:Geographicinformation-Referencing-Geographicidentifiers;GermanversionENV12661:1998
【原文标准名称】:地理信息.空间参照点.地理识别符
【标准号】:DINVENV12661-1999
【标准状态】:作废
【国别】:德国
【发布日期】:1999-04
【实施或试行日期】:
【发布单位】:德国标准化学会(DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:信息;地球表面;信息技术;识别;信息交流;通信系统;地质学;定义;参照模型;数据处理;土工学;传播学;大地测量学;编码;传播技术;地理学;数据
【英文主题词】:definition;informationexchange;earth'ssurface;encoding;data;geodesy;identification;communicationtechnology;communication;geology;information;referencemodel;geotechnics;informationtechnology;data
【摘要】:
【中国标准分类号】:A44
【国际标准分类号】:35_240_70;07_040
【页数】:19P;A4
【正文语种】:德语