This paper describes the application of IP Method 585 for measuring trace amounts of FAME in jet fuel using the Agilent 5975C GC/MS system.
The document details an analytical method for measuring trace amounts of Fatty Acid Methyl Esters (FAME) in jet fuel to detect biodiesel contamination. It utilizes Selective Ion Monitoring (SIM) with the Agilent 5975C GC/MS system to improve selectivity and sensitivity within the complex jet fuel matrix.
The note outlines the experimental setup, including specific instrument configurations for the Gas Chromatograph (7890A), Mass Spectrometer (5975C), and Automated Liquid Sampler (7693A). It presents calibration data demonstrating full recovery of FAMEs across a concentration range of 1 to 40 mg/kg with high precision.
The Joint Inspection Group has placed a maximum limit of 5 mg/kg (ppm) total FAME in jet fuel.
Full recovery of FAMEs was achieved across a concentration range of 1 to 40 mg/kg total FAME in jet fuel.
The five low concentration standards used were 2, 4, 6, 8, and 10 mg/kg for each FAME.