Developing Methods for Assessing Trophic Magnification of Perfluoroalkyl Substances within an Urban Terrestrial Avian Food Web.

ABSTRACT: We investigated the trophic magnification potential of perfluoroalkyl substances (PFAS) in a terrestrial food web by using a chemical activity-based approach, which involved normalizing concentrations of PFAS in biota to their relative biochemical composition in order to provide a thermodynamically accurate basis for comparing concentrations of PFAS in biota. Samples of hawk eggs, songbird tissues, and invertebrates were collected and analyzed for concentrations of 18 perfluoroalkyl acids (PFAAs) and for polar lipid, neutral lipid, total protein, albumin, and water content. Estimated mass fractions of PFCA C₈-C₁₁ and PFSA C₄-C₈ predominantly occurred in albumin within biota samples from the food web with smaller estimated fractions in polar lipid

SUBMITTER: Fremlin KM 

PROVIDER: S-EPMC10469464 | biostudies-literature | 2023 Aug

REPOSITORIES: biostudies-literature