Inputs, amplification and sinks of perfluoroalkyl substances at coastal Antarctica

Casas, Gemma; Iriarte, Jon; D'Agostino, Lisa A.; Roscales, Jose L.; Martinez-Varela, Alicia; Vila-Costa, Maria; Martin, Jonathan W.; Jiménez, Begoña; Dachs, Jordi

doi:10.1016/j.envpol.2023.122608

Environmental Pollution

2023

DOI: 10.1016/j.envpol.2023.122608

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Inputs, amplification and sinks of perfluoroalkyl substances at coastal Antarctica

Gemma Casas,

Jon Iriarte,

Lisa A. D'Agostino

et al.

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2024

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Cited by 3 publications

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Investigating the partitioning behavior of per- and polyfluoroalkyl substances (PFAS) during thermal landfill leachate evaporation

Cerlanek,

Timshina,

Robey

et al. 2024

Journal of Hazardous Materials

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Investigating the partitioning behavior of per- and polyfluoroalkyl substances (PFAS) during thermal landfill leachate evaporation

Cerlanek,

Timshina,

Robey

et al. 2024

Journal of Hazardous Materials

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Distribution Control and Environmental Fate of PFAS in the Offshore Region Adjacent to the Yangtze River Estuary─A Study Combining Multiple Phases Analysis

Li,

Han,

et al. 2024

Environ. Sci. Technol.

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The Yangtze River Estuary is the terminal sink of terrestrial perand polyfluoroalkyl substances (PFAS) from the Yangtze River, while the environmental fate characteristics of legacy and emerging PFAS around this region have rarely been discussed. Here, 24 targeted PFAS in seawater, sediments, suspended particulate matter (SPM), and plankton in the offshore region adjacent to this estuary were investigated. The three dominant PFAS in all phases were perfluorooctanoic acid (PFOA, 23.8−61.9%), perfluorobutanoic acid (PFBA, 23.6−42.8%), and perfluoro(2-methyl-3-oxahexanoic) acid (HFPO-DA, 6.1−12.1%), and perfluoro-1-butane sulfonamide (FBSA, 0.1− 7.3%) was first detected. The horizontal distributions of PFAS were dependent on salinity and disturbed by multiple water masses, while the vertical variations could be explained by their different partitioning characteristics in the water-SPM-sediment system (partition coefficients, Log K d and Log K oc ) and plankton (bioaccumulation factors, Log BAF). Although physical mixing was the major driver for PFAS settling (>83.7%), the absolute settling amount caused by the biological pump was still high (150.00−41994.65 ng m −2 day −1 ). More importantly, we found unexpected high Log K d values of PFBA (2.24−4.55) and HFPO-DA (2.26−4.67), equal to PFOA (2.28−4.72), which brought concerns about their environmental persistence. Considering the increased detection of short-chain and emerging PFAS, more comprehensive environmental behaviors analysis is required urgently.

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Occurrence of 80 per and polyfluorinated alkyl substances (PFAS) in muscle and liver tissues of marine mammals of the St. Lawrence Estuary and Gulf, Quebec, Canada

Khalid,

Le Calvez,

Lemire

et al. 2024

Front. Environ. Chem.

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Limited data are available for the occurrence of more recent per and polyfluorinated alkyl substances (PFAS) in marine mammals, especially from the St. Lawrence Estuary and Gulf. This study investigates the occurrence of PFAS in liver and muscle tissues of various marine mammals, including the harbor seal, gray seal, harp seal, hooded seal, harbor porpoise, white-sided dolphin, white-beaked dolphin, and True’s beaked whale. Among the 80 target PFAS (including PFCAs, PFSAs, Cyclic PFSA, FASAs/FASAAs, FTCAs/FTUCAs, FTSAs, Ether-PFAS, diPAPs, and ESI + ECF precursors) perfluorooctanoic sulfonate (PFOS) dominates in all the marine mammal species and several other long-chain PFCAs, such as PFNA, PFDA, PFUnA, PFTrDA, and PFHxDA, were detected at 100% frequency in both muscle and liver samples. PFDoA and 7:3 fluorotelomer carboxylic acid (7:3 acid) also showed a 100% detection frequency for liver samples. Harp seal tissues displayed notably low PFAS concentrations, with average total PFAS concentrations of 7 ng/g (ww: wet weight) in muscle and 44 ng/g (ww) in the liver. In contrast, the white-sided dolphin exhibited the highest average concentrations, reaching 39 ng/g (ww) in muscle and 334 ng/g (ww) in liver samples. The Pearson correlation analysis reveals a strong correlation between the concentration of PFOS, perfluoroalkyl carboxylic acids (PFCAs), and electrochemical fluorination (ECF) precursors. Species at the top of the marine food chain (harbor porpoise, white sided dolphin, and white beaked dolphin) presented the highest concentrations of PFAS, particularly PFOS and long-chain PFCAs, highlighting the need for an increased regulation of these persistent molecules in order to protect marine mammal’s health.

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Inputs, amplification and sinks of perfluoroalkyl substances at coastal Antarctica

Cited by 3 publications

References 62 publications

Investigating the partitioning behavior of per- and polyfluoroalkyl substances (PFAS) during thermal landfill leachate evaporation

Investigating the partitioning behavior of per- and polyfluoroalkyl substances (PFAS) during thermal landfill leachate evaporation

Distribution Control and Environmental Fate of PFAS in the Offshore Region Adjacent to the Yangtze River Estuary─A Study Combining Multiple Phases Analysis

Occurrence of 80 per and polyfluorinated alkyl substances (PFAS) in muscle and liver tissues of marine mammals of the St. Lawrence Estuary and Gulf, Quebec, Canada

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