
Liquid chromatography–ion mobility spectrometry–high-resolution mass spectrometry (LC–IMS–HRMS) shows elephant seal pups carry more PFAS than their mothers do.
EPA Method 625 is greatly simplified by using solid phase extraction (SPE) as an alternative to traditional liquid-liquid extraction (LLE). Using this SPE technique, paired with a sensitive GC–MS analysis, increases throughput and data quality, while decreasing manual labor and solvent usage.





