1、Designation:D598696(Reapproved 2019)Standard Test Method forDetermination of Oxygenates,Benzene,Toluene,C8C12Aromatics and Total Aromatics in Finished Gasoline by GasChromatography/Fourier Transform Infrared Spectroscopy1This standard is issued under the fixed designation D5986;the number immediatel
2、y following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This test method
3、covers the quantitative determinationof oxygenates:methyl-t-butylether(MTBE),di-isopropyl ether(DIPE),ethyl-t-butylether(ETBE),t-amylmethyl ether(TAME),methanol(MeOH),ethanol(EtOH),2-propanol(2-PrOH),t-butanol(t-BuOH),1-propanol(1-PrOH),2-butanol(2-BuOH),i-butanol(i-BuOH),1-butanol(1-BuOH);benzene,t
4、oluene and C8C12aromatics,and total aromatics in finishedmotor gasoline by gas chromatography/Fourier Transforminfrared spectroscopy(GC/FTIR).1.2 This test method covers the following concentrationranges:0.1%to 20%by volume per component for ethers andalcohols;0.1%to 2%by volume benzene;1%to 15%byvo
5、lume for toluene,10%to 40%by volume total(C6C12)aromatics.1.3 The method has not been tested by ASTM for refineryindividual hydrocarbon process streams,such as reformates,fluid catalytic cracking naphthas,etc.,used in blending ofgasolines.1.4 The values stated in SI units are to be regarded asstanda
6、rd.No other units of measurement are included in thisstandard.1.5 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety,health,and environmental practices and deter-mine
7、 the applicability of regulatory limitations prior to use.1.6 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations is
8、sued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D1298 Test Method for Density,Relative Density,or APIGravity of Crude Petroleum and Liquid Petroleum Prod-ucts by Hydrometer MethodD4052 Test Method for Density,Relative Density,an
9、d APIGravity of Liquids by Digital Density MeterD4057 Practice for Manual Sampling of Petroleum andPetroleum ProductsD4307 Practice for Preparation of Liquid Blends for Use asAnalytical Standards3.Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 aromaticsrefers to any organic comp
10、ound contain-ing a benzene or naphthalene ring.3.1.2 calibrated aromatic componentin this test method,refers to the individual aromatic components which have aspecific calibration.3.1.3 cool on-column injectorin gas chromatography,adirect sample introduction system which is set at a temperatureat or
11、 below the boiling point of solutes or solvent on injectionand then heated at a rate equal to or greater than the column.Normally used to eliminate boiling point discrimination oninjection or to reduce adsorption,or both,on glass liners withininjectors.The sample is injected directly into the head o
12、f thecapillary column tubing or retention gap.3.1.4 Gram-Schmidt chromatograma nonselective sum-mation of total intensity from a spectral scan per unit timewhich resembles in profile a flame ionization detector chro-matogram.3.1.5 retention gapin gas chromatography,refers to adeactivated precolumn w
13、hich acts as a zone of low retentionpower for reconcentrating bands in space.The polarity of theprecolumn must be similar to that of the analytical column.1This test method is under the jurisdiction of ASTM Committee D02 onPetroleum Products,Liquid Fuels,and Lubricants and is the direct responsibili
14、ty ofSubcommittee D02.04.0L on Gas Chromatography Methods.Current edition approved Dec.1,2019.Published December 2019.Originallyapproved in 1996.Last previous edition approved in 2015 as D5986 96(2015).DOI:10.1520/D5986-96R19.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orconta
15、ct ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was
16、developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1 3.1.6 selective wavelength chromatogram(SWC)in thistest method,refers to a selective chromatogram obtained bysumming the spectral intensity in a narrow spectral wavelengthor frequency range as a function of elution t