Binary plot illustrating the GC-MS chromatographic peaks (metabolites) associated with each SPME fiber.

<p>Columns represent the fibers while rows indicate peak retention times. Each extraction was performed in duplicate and replicates combined. Fiber legend: A - 75 µm CAR-PDMS, B - 85 µm CAR-PDMS, C - 50/30 µm CAR-DVB-PDMS, D - 85 µm PA, E - 65 µm DVB-PDMS, F - 7 µm PDMS, G - 100 µm PDMS, H - 60 µm PEG.