Elemental analysis of jet engine lubrication oil and jet fuel using in-air PIXE

To understand the elemental characteristics of the exhaust particles from a jet aircraft, we performed an element analysis using an in-air PIXE system of the different lubrication oils of a jet engine (Mobil Jet Oil II, Mobil Jet Oil 254 and Eastman Turbo Oil 2380) and the jet fuel (JET A-1) to determine the effects on the exhaust particles. A high concentration (1,400–2,500 wt.-ppm) of P was detected from the analyzed three oil samples. The high concentration of P is probably due to the tricresyl phosphate (TCP: C[Formula: see text]H[Formula: see text]O4P) contained in the oil samples. The S concentrations of the JET A-1 fuel samples with different collection dates were in the range of [Formula: see text]10 to 530 wt.-ppm. These results aid in determining the component features of nanoparticles emitted from an aircraft.