Oxidised compounds in aviation fuels using Nafion fibre solid phase microextraction

•Nafion SPME fibres were compared with a commercial alternative polar fibre.•Both were applied to analysis of oxidised compounds in alternate and conventional aviation fuels.•Nafion fibres provided improved extraction amounts for most of the polar analytes tested.•MDGC was used to improve resolution and tentative identification of oxidised compounds.

Nafion solid phase microextraction fibres were prepared and applied to the analysis of polar oxygenated analytes in non-polar aviation fuel matrices. The performance of the Nafion fibres was investigated and exhibited higher extraction efficiencies for polar analytes spiked into a reference non-polar fuel, compared with a commercially available polar (Carbowax) phase fibre. Oxygen-containing compounds were also tentatively identified in thermally oxidised aviation fuels using both single column and multidimensional gas chromatography with mass spectrometry.