ASTM-D7797 2012

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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

Published By	Publication Date	Number of Pages
ASTM	2012	6

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Categories: 75.160.20 - Liquid fuels, ASTM

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Description

ASTM D7797-12

Historical Standard: 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

ASTM D7797

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 1—Specifications falling within the scope of this test method are: Specification D1655 and Defence Standard 91-91.

Note 2—This 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 3—Additives 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 4—FAME 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.

Keywords

AVTUR; biodiesel in jet fuel; contamination; FAME; FTIR: FA-FTIR; methyl esters

ICS Code

ICS Number Code 75.160.20 (Liquid fuels)

DOI: 10.1520/D7797-12

Additional information

Standard Title	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
Published Code	ASTM
Publication Date	2012
Pages Count	6
ICS Codes	75.160.20 - Liquid fuels