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Potential exposure routes and accumulation kinetics for poly- and perfluorinated alkyl compounds for a freshwater amphipod: Gammarus spp. (Crustacea)
Potential exposure routes and accumulation kinetics for poly- and perfluorinated alkyl compounds for a freshwater amphipod: Gammarus spp. (Crustacea)
Abstract : Gammarids were exposed to sediments from a deposition site located on the Rh^one River (France) downstream of a fluoropolymer manufacturing plant. Gammarids accumulated to various extents four long-chain perfluoroalkyl carboxylic acids (PFCAs) from C9 to C13, one sulfonate, perfluorooctane sulfonate (PFOS) and three of its precursors (the perflurooctane sulfonamide (FOSA), the N-methyl perfluorooctane sulfonamidoacetic acid (MeFOSAA), the N-ethyl perfluorooctane sulfonamidoacetic acid (EtFOSAA) and the 6:2 fluorotelomer sulfonic acid (6:2 FTSA). Whatever the compound, the steady state was not achieved after a 3-week exposure; elimination was almost complete after a 3-week depuration period for perfluorononanoic acid (PFNA), PFOS, the three precursors and the 6:2FTSA. However, this was not the case for long-chain PFCAs, whose elimination rates decreased with increasing chain length. PFAS accumulation in gammarids occurred via the trophic and respiratory pathways, in proportions varying with the carbon chain length and the terminal moiety.
Keywords :
POLLUTANT EXPOSURE
SEDIMENT
Cited literature [48 references]
https://hal.archives-ouvertes.fr/hal-01868211
Contributor : Import Ws Irstea <>
Submitted on : Wednesday, September 5, 2018 - 11:19:43 AM
Last modification on : Wednesday, November 18, 2020 - 10:28:16 AM
Long-term archiving on: : Thursday, December 6, 2018 - 2:06:42 PM
Contributor : Import Ws Irstea <>
Submitted on : Wednesday, September 5, 2018 - 11:19:43 AM
Last modification on : Wednesday, November 18, 2020 - 10:28:16 AM
Long-term archiving on: : Thursday, December 6, 2018 - 2:06:42 PM
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ly2016-pub00048208.pdf
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