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.
Get more information about the standard at ASTM D7797-23.
ASTM D7797-23 outlines a standard test method for determining the Fatty Acid Methyl Esters (FAME) content in aviation turbine fuel (AVTUR) using Fourier Transform Infrared Spectroscopy (FTIR). This method is designed to rapidly and accurately measure FAME concentrations within a range of 10 mg/kg to 150 mg/kg, although higher or lower concentrations can be analyzed with varying precision. FAME content is critical for aviation fuel due to potential risks like filter clogging and thermal stability issues. ASTM D7797-23 serves as an internationally recognized method for maintaining aviation fuel quality, minimizing contamination risks, and ensuring operational reliability.
Details
The method employs flow analysis combined with FTIR and Partial Least Squares (PLS-1) processing to identify FAME molecules, particularly those with carbon chain lengths between C8 and C22. The technique is compatible with industry specifications such as ASTM D1655 and Defence Standard 91-91. It detects additives like antioxidants and antistatic agents but adjusts for their influence during data processing. FTIR spectrometers configured for flow analysis and equipped with appropriate software are essential for compliance testing.
Industries & Applications
ASTM D7797 is widely applied in the following industries:
- Aviation: Ensuring jet fuels meet strict contamination limits to prevent operational risks
- Automotive: Monitoring biodiesel blends to comply with environmental regulations
- Energy: Managing biodiesel quality in distribution networks