Patent ID: 8426212

Claim:
A method of monitoring for the presence of phosphate esters in jet fuel, the method comprising: obtaining from a jet fuel source a jet fuel test sample; combining the jet fuel test sample with a polar solvent and a nonpolar solvent to form a mixture; agitating the mixture; performing a single extraction of a portion of the polar solvent from the mixture; performing one injection of the extracted portion of the polar solvent into a gas chromatography and mass spectrometer apparatus; performing a combined gas chromatography and mass spectrometer analysis of the polar solvent to monitor for the presence of any phosphate esters at a concentration level of less than one (1) part per million (ppm) and to obtain an actual concentration level of any phosphate esters; and, comparing the actual concentration level of any phosphate esters with a calibration standard concentration of phosphate esters in clean jet fuel.