Bioaccumulation of Per- and polyfluoroalkyl substances (PFASs) in a tropical estuarine food web

The biomagnification of per- and polyfluoroalkyl substances (PFASs) was investigated in a tropical mangrove food web from an estuary in Bahia, Brazil. Samples of 44 organisms (21 taxa), along with biofilm, leaves, sediment and suspended particulate matter were analyzed. Sum (∑) PFAS concentrations i...

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Bibliographic Details
Published in:The Science of the total environment 2021-02, Vol.754, p.142146, Article 142146
Main Authors: Miranda, Daniele A., Benskin, Jonathan P., Awad, Raed, Lepoint, Gilles, Leonel, Juliana, Hatje, Vanessa
Format: Article
Language:English
Subjects:
Alkanesulfonic Acids - analysis
Animals
Aquatic sciences & oceanology
bio accumulation
Bioaccumulation
Biomagnification
Brazil
Environmental Monitoring
Environmental sciences & ecology
Fluorocarbons - analysis
Food Chain
Life sciences
mangroves
PFOS precursors
POPs
Sciences aquatiques & océanologie
Sciences de l’environnement & écologie
Sciences du vivant
stable isotopes
Todos os Santos Bay
tropical estuaries
Tropical food web
Water Pollutants, Chemical - analysis
Zoologie
Zoology
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Summary:The biomagnification of per- and polyfluoroalkyl substances (PFASs) was investigated in a tropical mangrove food web from an estuary in Bahia, Brazil. Samples of 44 organisms (21 taxa), along with biofilm, leaves, sediment and suspended particulate matter were analyzed. Sum (∑) PFAS concentrations in biota samples were dominated by perfluorooctane sulfonate (PFOS, 93% detection frequency in tissues; 0.05 to 1.97 ng g−1 ww whole-body (wb)), followed by perfluorotridecanoate (PFTrDA, 57%; 0.01 to 0.28 ng g−1 ww wb). PFOS precursors such as perfluorooctane sulfonamide (FOSA, 54%; 0.01 to 0.32 ng g−1 ww wb) and N-ethyl perfluorooctane sulfonamide (EtFOSA; 30%; 0.01 to 0.21 ng g−1 ww wb) were also detected. PFAS accumulation profiles revealed different routes of exposure among bivalve, crustacean and fish groups. Statistics for left-censored data were used in order to minimize bias on trophic magnification factors (TMFs) calculations. TMFs >1 were observed for PFOS (linear + branched isomers), EtFOSA (linear + branched isomers), and perfluorononanoate (PFNA), and in all cases, dissimilar accumulation patterns were observed among different trophic positions. The apparent biodilution of some long-chain PFCAs through the food chain (TMF 
ISSN:0048-9697
1879-1026
1879-1026
DOI:10.1016/j.scitotenv.2020.142146