ASTM_D_7797_-_12.pdf

Designation:D779712An American National Standard583Standard Test Method forDetermination of the Fatty Acid Methyl Esters Content ofAviation Turbine Fuel Using Flow Analysis by FourierTransform Infrared Spectroscopy Rapid ScreeningMethod1,2This standard is issued under the fixed designation D7797;the number immediately 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 specifies a rapid screening methodusing flow analysis by Fourier transform infrared(FA-FTIR)spectroscopy with partial least squares(PLS-1)processing forthe determination of the fatty acid methyl ester(FAME)content of aviation turbine fuel(AVTUR),in the range of 20 to150 mg/kg.NOTE1Specifications falling within the scope of this test method are:Specification D1655 and Defence Standard 91-91.NOTE2This test method detects all FAME components,with peak IRabsorbance at approximately 1749 cm-1and C8to C22molecules,asspecified in standards such as Specification D6751 and EN 14214.Theaccuracy of the method is based on the molecular weight of C16 to C18FAME species;the presence of other FAME species with differentmolecular weights could affect the accuracy.NOTE3Additives such as antistatic agents,antioxidants and corrosioninhibitors are measured with the FAME by the FTIR spectrometer.However the effects of these additives are removed by the flow analysisprocessing.NOTE4FAME concentrations from 150 mg/kg to 500 mg/kg,andbelow 20 mg/kg can be measured but the precision could be affected.1.2 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.3 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 and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:3D1298 Test Method for Density,Relative Density,or APIGravity of Crude Petroleum and Liquid Petroleum Prod-ucts by Hydrometer MethodD1655 Specification for Aviation Turbine FuelsD4052 Test Method for Density,Relative Density,and APIGravity of Liquids by Digital Density MeterD4057 Practice for Manual Sampling of Petroleum andPetroleum ProductsD4177 Practice for Automatic Sampling of Petroleum andPetroleum ProductsD6300 Practice for Determination of Precision and BiasData for Use in Test Methods for Petroleum Products andLubricantsD6751 Specification for Biodiesel Fuel Blend Stock(B100)for Middle Distillate FuelsE1655 Practices for Infrared Multivariate QuantitativeAnalysis2.2 ISO Standards:4ISO 4259 Petroleum Products Determination and applica-tion of precision data in relation to methods of test2.3 CEN Standards:4EN 14214 Specification Automotive fuels Fatty acidmethyl esters(FAME)for diesel engines Requirementsand test methods2.4 Energy Institute Standards:5IP 583 Test method for Determination of the fatty acidmethyl esters content of aviation turbine fuel using flowanalysis by Fourier transform infrared spectroscopy 1This test method is under the jurisdiction of ASTM Committee D02 onPetroleum Products,Liquid Fuels,and Lubricants and is the direct responsibility ofSubcommittee D02.J0.05 on Fuel Cleanliness.Current edition approved April 15,2012.Published June 2012.DOI:10.1520/D7797-122This standard has been developed through the cooperative effort betweenASTM International and the Energy Institute,London.The IP and ASTM logosimply that the ASTM and IP standards are technically equivalent,but their use doesnot imply that both standards are editorially identical.3For 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.4Available from American National Standards Institute(ANSI),25 W.43rd St.,4th Floor,New York,NY 10036,http:/www.ansi.org.5Available from the Energy Institute,61 New Cavendish St.,London,WIG 7AR,U.K.,http:/www.energyinst.org.uk.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 Rapid screening method2.5 Other Standards:6Defence Standard 91-91 Issue 7(DERD 2494)Turbine Fuel,Aviation Kerosine Type,Jet A12.6 ASTM Adjuncts:7D2PP Determination of Precision and Bias Data for Use inTest Methods for Petroleum Products3.Terminology3.1 Definitions:3.1.1 FAME,nFatty acid methyl esters,also known asbiodiesel.3.1.1.1 DiscussionUsed as a component in automotivediesel fuel and the potential source of contamination in aviationturbine fuel due to multi-fuel tankers and pipelines.3.2 Definitions of Terms Specific to This Standard:3.2.1 FA-FTIR,nflow analysis by Fouri