Xun ZHAO, Yumin ZHANG, Bruce R. COOPER, Petr VOZKA, Gozdem KILAZ; Optimization of comprehensive two-dimensional gas chromatography with time-of-flight mass spectrometry (GC×GC/TOF-MS) for conventional and alternative jet fuels analysis; Advanced Materials and Technologies Environmental Sciences; 2018:2(1):146-156


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Comprehensive two-dimensional gas chromatography and time-of-flight mass spectrometry (GC×GC/TOF-MS) has been used in group-type chemical compositional analyses of gas turbine fuel as this state-of-the-art technique enables a detailed output of fuel constituents. However, it is an unreasonable expectation for one set of operational parameters to yield optimal separation for every fuel type. The aim of this study was to optimize the operational parameters for conventional jet fuel (Jet A) and the alternative fuel Hydroprocessed Esters and Fatty Acids (HEFA) to achieve the most efficient separation. Response surface methodology was utilized in design of experiments. The parameters investigated were as follows: modulation time (3.5–7.5 s), oven temperature ramp (1–8 °C/min), secondary oven temperature offset (15–40 °C), and carrier gas flow rate (1.0–1.5 mL/min). The optimum parameters for Jet A and its mixture with HEFA were discovered.