ASTM D7797 - 12

    Test Method for Determination of the Fatty Acid Methyl Esters Content of Aviation Turbine Fuel Using Flow Analysis by Fourier Transform Infrared Spectroscopy – Rapid Screening Method

    Active Standard ASTM D7797 | Developed by Subcommittee: D02.J0.05

    Book of Standards Volume: 05.04

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    Significance and Use

    5.1 The present and growing international governmental requirements to add fatty acid methyl esters (FAME) to diesel fuel has had the unintended side-effect of leading to potential FAME contamination of jet turbine fuel in multifuel transport facilities such as cargo tankers and pipelines, and industry wide concerns.

    5.2 Analytical methods have been developed with the capability of measuring down to <5 mg/kg levels of FAME, however these are complex, and require specialized personnel and laboratory facilities. This Rapid Screening method has been developed for use in the supply chain by non specialized personnel to cover the range of 20 to 150 mg/kg.

    1. Scope

    1.1 This test method specifies a rapid screening method using flow analysis by Fourier transform infrared (FA-FTIR) spectroscopy with partial least squares (PLS-1) processing for the determination of the fatty acid methyl ester (FAME) content of aviation turbine fuel (AVTUR), in the range of 20 to 150 mg/kg.

    Note 1Specifications falling within the scope of this test method are: Specification D1655 and Defence Standard 91-91.
    Note 2This test method detects all FAME components, with peak IR absorbance at approximately 1749 cm-1 and C8 to C22 molecules, as specified in standards such as Specification D6751 and EN 14214. The accuracy of the method is based on the molecular weight of C16 to C18 FAME species; the presence of other FAME species with different molecular weights could affect the accuracy.
    Note 3Additives such as antistatic agents, antioxidants and corrosion inhibitors are measured with the FAME by the FTIR spectrometer. However the effects of these additives are removed by the flow analysis processing.
    Note 4FAME concentrations from 150 mg/kg to 500 mg/kg, and below 20 mg/kg can be measured but the precision could be affected.

    1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

    1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    D1298 Test Method for Density, Relative Density (Specific Gravity), or API Gravity of Crude Petroleum and Liquid Petroleum Products by Hydrometer Method

    D1655 Specification for Aviation Turbine Fuels

    D4052 Test Method for Density, Relative Density, and API Gravity of Liquids by Digital Density Meter

    D4057 Practice for Manual Sampling of Petroleum and Petroleum Products

    D4177 Practice for Automatic Sampling of Petroleum and Petroleum Products

    D6300 Practice for Determination of Precision and Bias Data for Use in Test Methods for Petroleum Products and Lubricants

    D6751 Specification for Biodiesel Fuel Blend Stock (B100) for Middle Distillate Fuels

    E1655 Practices for Infrared Multivariate Quantitative Analysis

    ISO Standards

    ISO4259 Petroleum Products - Determination and application of precision data in relation to methods of test

    CEN Standards

    EN14214 Specification Automotive fuels - Fatty acid methyl esters (FAME) for diesel engines - Requirements and test methods

    Energy Institute Standards

    IP583 Test method for Determination of the fatty acid methyl esters content of aviation turbine fuel using flow analysis by Fourier transform infrared spectroscopy - Rapid screening method

    Other Standards

    DefenceStandard91-91 Issue 7 (DERD 2494) Turbine Fuel, Aviation Kerosine Type, Jet A1

    ICS Code

    ICS Number Code 75.160.20 (Liquid fuels)

    UNSPSC Code

    UNSPSC Code 15101504(Aviation fuel)

    DOI: 10.1520/D7797-12

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