Aquatic hazard, bioaccumulation and screening risk assessment for 6:2 fluorotelomer sulfonate

Hoke, Robert A.; Ferrell, Barbra D.; Ryan, Tim; Sloman, Terry L.; Green, John W.; Nabb, Diane L.; Mingoia, Robert T.; Buck, Robert C.; Korzeniowski, Stephen H.

doi:10.1016/j.chemosphere.2015.01.033

Cited by 51 publications

(36 citation statements)

References 39 publications

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“…Laboratory measurements suggest that BCFs decline with increasing exposure concentration (Liu et al 2011; Inoue et al 2012; Dai et al 2013; Fernández‐Sanjuan et al 2013; Hoke et al 2015; Chen et al 2016). For example, Inoue et al (2012) reported BCFs of 720 and 1300 with aqueous concentrations of 16 and 1.88 µg/L, respectively, for PFOS with common carp, a 1.8‐fold increase in BCF with an 8.5‐fold decrease in exposure concentration.…”

Section: Resultsmentioning

confidence: 99%

“…For example, lake trout (Salvelinus namaycush) and crucian carp (Carassius carassius) have median whole body log BAFs (range, standard deviation, count) for PFOS of 4.27 (1.13, 0.32,10) and 3.37 (2.26, 0.72, 6), respectively. Laboratory measurements suggest that BCFs decline with increasing exposure concentration(Chen et al 2016;Dai et al 2013;Fernández-Sanjuan et al 2013;Hoke et al 2015;Inoue et al 2012;Liu et al 2011). For example, Inoue et al(Inoue et al…”

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confidence: 99%

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Evaluation of Published Bioconcentration Factor (BCF) and Bioaccumulation Factor (BAF) Data for Per‐ and Polyfluoroalkyl Substances Across Aquatic Species

Burkhard

2021

Enviro Toxic and Chemistry

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Perand polyfluoroalkyl substances (PFAS) are a group of man-made chemicals of concern across the globe, and some of the PFAS chemicals are known to be bioaccumulative in aquatic species. A literature search for bioconcentration factors (BCFs) and bioaccumulation factors (BAFs) for PFASs has been done and data for 22 taxonomic classes were assembled. The assembled data were evaluated for quality, and for gaps and limitations in bioaccumulation information for PFAS universe of chemicals.In general, carbonyl and sulfonyl PFAS classes are relatively data rich while phosphate, fluorotelomer and ether PFAS classes are data limited for fish and nonexistent for most This article is protected by copyright. All rights reserved. Accepted Articleother taxonomic classes. Taxonomic classes with the most measurements were, in descending order, Teleostei (fish), Bivalvia, and Malacostraca. For fish, median whole body log BAFs (L/kg-ww) for perfluorooctane sulfonic acid (PFOS) and perfluorooctanoic acid (PFOA) were 3.47 (sd=0.78, n=105) and 2.16 (sd=0.85, n=48) using all measurements, respectively. In comparison to freshwater species, data are limited for marine species and further research is needed to determine if BAFs for freshwater and marine species should be the same or different. BAFs for some PFASs appear consistent with BCFs developed with laboratory experiments, in which values decline with increasing concentrations in water.

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Section: Resultsmentioning

confidence: 99%

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confidence: 99%

Evaluation of Published Bioconcentration Factor (BCF) and Bioaccumulation Factor (BAF) Data for Per‐ and Polyfluoroalkyl Substances Across Aquatic Species

Burkhard

2021

Enviro Toxic and Chemistry

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“…For these compounds, the slope of the regression was not significantly different from zero, or TMF was below 1, thereby suggesting the absence of relation between log C and TL and, thus, the absence of biomagnification. Due to the poor bioaccumulation of shorter-chain PFAAs and the potential metabolization of perfluorooctane sulfonamide derivatives and 6:2 FTSA (Hoke et al, 2015), it is not surprising to observe steady or decreasing concentration of these chemicals with TL. Some exceptions (TMFs > 1) were, however, observed for PFHxS, PFHpS and N-MeFOSAA at site 3, and PFHxS at site 1.…”

Section: Trophic Magnification Factorsmentioning

confidence: 99%

Investigation of the spatial variability of poly- and perfluoroalkyl substance trophic magnification in selected riverine ecosystems

Simmonet-Laprade

Budzinski

Babut³

et al. 2019

Science of The Total Environment

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The occurrence at different trophic levels of 17 poly-and perfluoroalkyl substances (PFASs), including perfluoroalkyl acids (PFAAs) and some of their precursors (e.g., perfluoroalkane sulfonamides, 6:2 fluorotelomer sulfonate (6:2 FTSA)), was investigated in riverine freshwater food webs in Southeastern France. Two fish species (Barbus barbus and Squalius cephalus) and various invertebrate taxa were collected in five rivers to assess the spatial variability of trophic magnification factors (TMFs). Particular attention was devoted to sample and data processing to minimize potential biases associated with the TMF determination. Fish were significantly more contaminated than invertebrates (ΣPFAS = 7-1811 vs. 0.9-213 ng g-1 wet weight (ww)). Those from the Rhône River presented significantly higher levels due to high concentrations of perfluoroundecanoic acid (406 ng g-1 ww) and perfluorotridecanoic acid (566 ng g-1 ww) ascribed to an industrial point source. Perfluorooctane sulfonate (PFOS) was dominant at the other sites (concentration range = 3.6-134 ng g-1 ww). Two linear regression models were compared (i.e., Kendall regression vs. Generalized Linear Mixed-Effect Model, GLMM). Results showed that TMFs calculated using the non-weighted Kendall regression were higher than those obtained using the GLMM approach. GLMM-based TMFs were consistently > 1 for C9-C14 perfluorocarboxylic acids (PFCAs), PFOS and perfluorodecane sulfonate (PFDS), indicating their apparent biomagnification in the investigated food webs. Comparatively, 6:2 FTSA and Nethylperfluorooctane sulfonamidoacetic acid (N-EtFOSAA) were less often detected and were not significantly biomagnified, probably because of metabolization. TMF estimates were generally consistent across sites although some PFASs (in particular C9, C10 and C13 PFCAs) displayed higher variability, due to a unique extreme value that may have resulted from the contribution of unattributed precursor biotransformation.

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“…However, 6:2 FTS has found further uses as a PFOS substitute in AFFF, oil production and primarily occurs as an intermediate degradant of complex fluorotelomer-based substances [4]. In initial testing by Dupont scientists, 6:2 FTS was found to show low risk to aquatic ecosystems making it a desirable substitute, however, studies on the environmental fate and effects were still needed [22]. Alternatively, F-53 (6:2 PFESA) then the chlorine substituted F-53B (6:2 Cl-PFESA), have been used almost exclusively in China since the 1970s with little PFOS ever used in metal plating [19].…”

Section: Introductionmentioning

confidence: 99%

An investigation into per- and polyfluoroalkyl substances (PFAS) in nineteen Australian wastewater treatment plants (WWTPs)

Coggan

Moodie

Kolobaric

et al. 2019

Heliyon

182

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Quantifying the emissions of per- and polyfluoroalkyl substances (PFAS) from Australian wastewater treatment plants (WWTP) is of high importance due to potential impacts on receiving aquatic ecosystems. The new Australian PFAS National Environmental Management Plan recommends 0.23 ng L −1 of PFOS as the guideline value for 99% species protection for aquatic systems. In this study, 21 PFAS from four classes were measured in WWTP solid and aqueous samples from 19 Australian WWTPs. The mean ∑ 21 PFAS was 110 ng L −1 (median: 80 ng L −1 ; range: 9.3–520 ng L −1 ) in aqueous samples and 34 ng g −1 dw (median: 12 ng g −1 dw; range: 2.0–130 ng g −1 dw) in WWTP solids. Similar to WWTPs worldwide, perfluorocarboxylic acids were generally higher in effluent, compared to influent. Partitioning to solids within WWTPs increased with increasing fluoroalkyl chain length from 0.05 to 1.22 log units. Many PFAS were highly correlated, and PCA analysis showed strong associations between two groups: odd chained PFCAs, PFHxA and PFSAs; and 6:2 FTS with daily inflow volume and the proportion of trade waste accepted by WWTPs (as % of typical dry inflow). The compounds PFPeA, PFHxA, PFHpA, PFOA, PFNA, and PFDA increased significantly between influent and final effluent. The compounds 6:2 FTS and 8:2 FTS were quantified and F–53B detected and reported in Australian WWTP matrices. The compound 6:2 FTS was an important contributor to PFAS emissions in the studied Australian WWTPs, supporting the need for future research on its sources (including precursor degradation), environmental fate and impact in Australian aquatic environments receiving WWTP effluent.

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Aquatic hazard, bioaccumulation and screening risk assessment for 6:2 fluorotelomer sulfonate

Cited by 51 publications

References 39 publications

Evaluation of Published Bioconcentration Factor (BCF) and Bioaccumulation Factor (BAF) Data for Per‐ and Polyfluoroalkyl Substances Across Aquatic Species

Evaluation of Published Bioconcentration Factor (BCF) and Bioaccumulation Factor (BAF) Data for Per‐ and Polyfluoroalkyl Substances Across Aquatic Species

Investigation of the spatial variability of poly- and perfluoroalkyl substance trophic magnification in selected riverine ecosystems

An investigation into per- and polyfluoroalkyl substances (PFAS) in nineteen Australian wastewater treatment plants (WWTPs)

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