1、Designation:D481522Standard Test Method forDetermination of MTBE,ETBE,TAME,DIPE,tertiary-AmylAlcohol and C1to C4Alcohols in Gasoline by GasChromatography1This standard is issued under the fixed designation D4815;the number immediately following the designation indicates the year oforiginal adoption
2、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.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope*1.
3、1 This test method covers the determination of ethers andalcohols in gasolines by gas chromatography.Specific com-pounds determined are methyl tert-butylether(MTBE),ethyltert-butylether(ETBE),tert-amylmethylether(TAME),diiso-propylether(DIPE),methanol,ethanol,isopropanol,n-propanol,isobutanol,tert-b
4、utanol,sec-butanol,n-butanol,and tert-pentanol(tert-amylalcohol).1.2 Individual ethers are determined from 0.20%to 20.0%by mass.Individual alcohols are determined from 0.20%to12.0%by mass.Equations used to convert to mass percentoxygen and to volume percent of individual compounds areprovided.At con
5、centrations 10%by volumeolefins,the interference may be 0.20%by mass.Annex A1gives a chromatogram showing the interference observed witha gasoline containing 10%by volume olefins.1.3 This test method includes a relative bias correlation forethanol in spark-ignition engine fuels for the U.S.EPAregula
6、tions reporting based on Practice D6708 accuracy assess-ment between Test Method D4815 and Test Method D5599 asa possible Test Method D4815 alternative to Test MethodD5599.The Practice D6708 derived correlation equation isonly applicable for ethanol in fuels in the concentration rangefrom 2.28%to 14
7、.42%by mass as measured by Test MethodD4815.The applicable Test Method D5599 range for ethanol isfrom 2.16%to 14.39%by mass as reported by Test MethodD5599.1.4 Alcohol-based fuels,such as M-85 and E-85,MTBEproduct,ethanol product,and denatured alcohol,are specifi-cally excluded from this test method
8、.The methanol content ofM-85 fuel is considered beyond the operating range of thesystem.1.5 Benzene,while detected,cannot be quantified using thistest method and shall be analyzed by alternate methodology(see Test Method D3606).1.6 The values stated in SI units are to be regarded asstandard.Alternat
9、e units,in common usage,are also providedto increase clarity and aid the users of this test method.1.7 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 e
10、nvironmental practices and deter-mine the applicability of regulatory limitations prior to use.1.8 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 Sta
11、ndards,Guides and Recom-mendations issued 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 MethodD1744 Test M
12、ethod for Determination of Water in LiquidPetroleum Products by Karl Fischer Reagent(Withdrawn2016)3D3606 Test Method for Determination of Benzene andToluene in Spark Ignition Fuels by Gas ChromatographyD4052 Test Method for Density,Relative Density,and API1This test method is under the jurisdiction
13、 of ASTM Committee D02 onPetroleum Products,Liquid Fuels,and Lubricants and is the direct responsibility ofSubcommittee D02.04.0L on Gas Chromatography Methods.Current edition approved April 1,2022.Published April 2022.Originallyapproved in 1989.Last previous edition approved in 2019 as D4815 15b(20
14、19).DOI:10.1520/D4815-22.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3The last approved version of this histor
15、ical standard is referenced onwww.astm.org.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recogni
16、zed 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.1Gravity of Liquids by Digital Density MeterD4057 Practice for Manual Sampling of Petroleum andPetroleum ProductsD4175 Terminology Relating to Petroleum Products,LiquidFuels,and LubricantsD4177 Practice for Automatic Sampling of Petroleum andPetroleum ProductsD4307 Prac