Discovery of Fluorotelomer Sulfones in the Blubber of Greenland Killer Whales (<i>Orcinus orca</i>).

ABSTRACT: Most known per- and polyfluoroalkyl substances (PFAS) bioaccumulate by binding to proteins or partitioning to phospholipids, leading to their prevalence in liver and blood. However, the recent discovery of high concentrations of unidentified extractable organofluorine (EOF) in the blubber of a killer whale (Orcinus orca) from Greenland suggests that some fluorinated substances preferentially bioaccumulate in storage lipids. To further investigate this, the present work examined blubber from 4 killer whales (3 from Greenland, 1 from Sweden) via gas chromatography-atmospheric pressure chemical ionization-ion mobility mass spectrometry. Using collision cross sections, we prioritized features suspected to be highly fluorinated and then selected 5 for manual annotation. Custom synthesize

SUBMITTER: Lauria MZ 

PROVIDER: S-EPMC12424159 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature