High-resolution GC/TOF MS analysis of PAHs in complex sewage sludge matrix

Top: GC/TOF total ion chromatogram (TIC) of a sewage sludge sample. The complexity of the sample is clear.

Bottom: Sub-amu extracted-ion chromatogram of 178.08 ±50 mDa removes all matrix interferences to show phenanthrene and anthracene (inset). This enhances confidence in peak identification and greatly improves signal-to-noise.

Column used:
30 m x 0.25 mm x 0.25 µm Rxi-5ms