Evidence for the Trophic Transfer of Perfluoroalkylated Substances in a Temperate Macrotidal Estuary | Zendy

Gabriel Munoz | Zendy; Hélène Budzinski | Zendy; Marc Babut | Zendy; Hilaire Drouineau | Zendy; Mathilde Lauzent | Zendy; Karyn Le Ménach | Zendy; Jérémy Lobry | Zendy; Jonathan Selleslagh | Zendy; Caroline Simonnet-Laprade | Zendy; Pierre Labadie | Zendy

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Evidence for the Trophic Transfer of Perfluoroalkylated Substances in a Temperate Macrotidal Estuary

Author(s) -

Gabriel Munoz,

Hélène Budzinski,

Marc Babut,

Hilaire Drouineau,

Mathilde Lauzent,

Karyn Le Ménach,

Jérémy Lobry,

Jonathan Selleslagh,

Caroline Simonnet-Laprade,

Pierre Labadie

Publication year - 2017

Publication title -

environmental science and technology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.851

H-Index - 397

eISSN - 1520-5851

pISSN - 0013-936X

DOI - 10.1021/acs.est.7b02399

Subject(s) - trophic level , benthic zone , environmental chemistry , food web , perfluorooctane , estuary , biota , environmental science , food chain , chemistry , ecology , biology , organic chemistry , sulfonate , sodium

The present survey examines the trophodynamics of a suite of 19 perfluoroalkyl substances (PFASs) in a temperate macrotidal estuary (Gironde, SW France). Across the 147 biota samples (18 taxa) collected, perfluorooctane sulfonate (PFOS), perfluorooctane sulfonamide (FOSA), and C 8 -C 14 perfluoroalkyl carboxylates (PFCAs) were the most-recurrent analytes. ΣPFASs ranged between 0.66-45 ng per g of wet weight of the whole body. Benthic organisms had relatively high ΣPFASs compared to demersal organisms and displayed specific composition profiles with higher relative abundances of C 8 and C 9 PFCAs. Trophic magnification factors (TMFs) were determined through the use of linear mixed effect models including censored data, thereby considering data below detection limits as well as the interspecific variability of δ 15 N and PFAS levels (random effects). TMFs were almost consistently >1 in the benthic food web as well as when considering all data pooled together, providing evidence for the biomagnification of several PFASs in estuarine environments. In addition, in contrast with previous observations, TMFs determined in the estuarine benthic web were found to significantly decrease with increasing chain length for C 8 -C 14 PFCAs and C 6 -C 8 perfluoroalkyl sulfonates. This suggests that PFAS chemical structure might not be necessarily predictive of TMFs, which are also influenced by the trophic web characteristics.

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