Spatial distribution of perfluoroalkyl acids in surface sediments of the German Bight, North Sea

Zhao, Zhen; Xie, Zhiyong; Tang, Jianhui; Zhang, Gan; Ebinghaus, Ralf

doi:10.1016/j.scitotenv.2014.12.063

Cited by 22 publications

(7 citation statements)

References 60 publications

(79 reference statements)

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“…Only a few other studies looked for this chemical (e.g. Zhao et al, 2015), and generally found lower concentrations than in this study. While it is therefore very difficult to confirm whether or not the spiking schedule was realistic, we considered that this was not a significant concern, given that the motivation for spiking was to determine whether or not concentration dependency occurs.…”

Section: Sediment Spikingcontrasting

confidence: 66%

Refining uptake and depuration constants for fluoroalkyl chemicals in Chironomus riparius larvae on the basis of experimental results and modelling

Bertin¹,

Ferrari

Labadie

et al. 2018

Ecotoxicology and Environmental Safety

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The aims of this study were to determine depuration rates for a range of per- and polyfluoroalkyl substances (PFASs) using Chironomus riparius, and to test a concentration-dependency hypothesis for the long-chain perfluorotridecanoic acid (PFTrDA) for this species. Midge larvae were exposed to field sediments collected downstream of a fluorotelomer plant, and to the same sediment spiked with PFTrDA. Elimination kinetics results indicated complete elimination of all PFASs by chironomids after 42h. These data were used to develop two PFTrDA bioaccumulation models accounting for chironomid growth and for compound concentration dependency or not. There was much better agreement between observed and simulated data under the concentration-dependency hypothesis than under the alternative one (passive diffusion). The PFTrDA uptake rate derived from the concentration-dependency model equaled 0.013 ± 0.008ggh, and the depuration rate 0.032 ± 0.009h.

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Section: Sediment Spikingcontrasting

confidence: 66%

Refining uptake and depuration constants for fluoroalkyl chemicals in Chironomus riparius larvae on the basis of experimental results and modelling

Bertin¹,

Ferrari

Labadie

et al. 2018

Ecotoxicology and Environmental Safety

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“…1 Owing to their stability and amphipathic properties, PFASs have been used in a wide range of commercial processes and consumer products. 2 Concern over the use of these substances stems mostly from the occurrence of peruoroalkyl acids (PFAAs; a sub-class of PFAS) in the global environment, including water, 3,4 soils, 5 sediment, 6 wildlife 7 and humans. 8 PFAAs have been linked to a wide range of adverse health effects, including neuro-and immune toxicity, endocrine disruption, and cancer (see review by DeWitt…”

Section: Introductionmentioning

confidence: 99%

Inter-individual, inter-city, and temporal trends of per- and polyfluoroalkyl substances in human milk from Swedish mothers between 1972 and 2016

Nyberg

Awad

Bignert

et al. 2018

Environ. Sci.: Processes Impacts

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Inter-individual, inter-city, and temporal trends of 19 per-and polyfluoroalkyl substances (PFASs) were investigated in human milk collected in Stockholm (1972Stockholm ( -2016 and Gothenburg (2007Gothenburg ( -2015, Sweden. Overall these data indicate that exposure to some legacy PFASs via breastmilk is declining, presumably as a result of regulation and phase-out initiatives. However, increasing concentrations for other PFASs and a shift in the overall PFAS profile in recent years may pose an ongoing health risk to infants. Environmental signicancePer-and polyuoroalkyl substances (PFASs) are anthropogenic substances which contaminate human blood globally. In breastfed infants, human milk is among the most important sources of PFAS exposure. Characterizing PFAS levels and time trends in breast milk is therefore important for assessing risks to infants. In the present work, we analyzed 19 PFASs (plus branched isomers) in human breastmilk from Stockholm (1972Stockholm ( -2016 and Gothenburg (2007Gothenburg ( -2015 and examined inter-individual and inter-city differences, along with temporal trends using change-point detection. Overall, concentrations, proles, and interindividual variability were similar in milk from Stockholm and Gothenburg. Concentrations of long chain peruorinated carboxylic acids and peruorohexane sulfonate increased in human milk from Stockholm over the entire monitoring period, while for others PFASs, such as peruorooctane sulfonate, concentrations have decreased signicantly over the last 10 years. These changes probably reect increased manufacturing/use for some PFASs, and international phase-out initiatives and regulation for others. Transformation of PFAA-precursors and/or differences in half-lives may also play a role in inuencing the observed trends for some PFASs. Given infants' sensitive developmental stage, the occurrence of PFASs in breastmilk is a concern, in particular for those substances displaying increasing time trends over the last decade.

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“…Other research conducted in China (the Jiulong Estuary-Xiamen Bay) indicates the presence of PFASs at lower levels (ΣPFAS-3.0-5.4 ng/g d.w.) [19]. Furthermore, in other areas, ΣPFAS was up to a few ng/g d.w. [4,11,17,[20][21][22]. In the case of samples taken at the mouth of the Vistula, the recorded values are higher (average Σ17PFAS = 77 ng/g d.w.) but lower than those obtained by Bai et al (2021) for the area of the Truckee River and Las Vegas Wash (average Σ17PFAS = 272.9 and 345.7 ng/g d.w., respectively) [23].…”

Section: Discussionmentioning

confidence: 91%

“…The results of other sediment studies by Kahkashan et al (2019) in the Chukchi Sea, the Bering Sea, and Arctic Ocean area indicated that PFBS, PFOA, and PFOS were the dominant PFASs in these areas [24]. Research by Zhao et al (2015) indicates that PFOS was the dominant compound in marine sediments in the German Bright, and the enrichment of PFOS in sediment might be strongly related to the compound structure itself [11]. In 2013, Filipovic et al conducted a mass balance study in the Baltic Sea for selected PFASs (PFOA, PFDA, PFOS, and PFHxA) [26].…”

Section: Wtp I-wtp IVmentioning

confidence: 95%

“…Kibambe et al (2020) in their research suggest that despite the wastewater treatment process, PFASs were still present in the effluent samples 2 of 19 in high concentrations, usually exceeding 1 ng/L, which may present a significant threat to the growth and survival of aquatic organisms in the receiving water bodies [8]. An important pathway for the transport of PFASs from soils to seas and oceans are rivers and partly atmospheric pathways [10,11]. A study carried out by Pan and You (2010) suggests that PFSAs may be carried with river water and transported for long distances before they reach the sea and largely scavenged to the sediment in the estuaries due to the change in salinity [12].…”

Section: Introductionmentioning

confidence: 99%

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Environmental Risk Assessment Resulting from Sediment Contamination with Perfluoroalkyl Substances

et al. 2020

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Due to wide use of perfluoroalkyl substances (PFASs) (e.g., in metal-plating, in fire-fighting foam, lubricants) and their resistance to degradation, they occur widely in the environment. The aim of this study was to estimate the environmental risk resulting from the presence of PFASs in the Gulf of Gdansk. Therefore, 17 PFASs concentrations were determined using ultra performance liquid chromatography with tandem mass spectrometry detection (UPLC-MS/MS). Additionally, sediment ecotoxicity was investigated. The results of the chemical analysis were used to asses environmental risk of PFASs. In samples collected around discharge collectors from a wastewater treatment plant and the Vistula mouth, Σ17PFASs values were 0.00403 ÷ 40.6 and 0.509 ÷ 614 ng/g d.w., respectively. In samples collected around discharge collectors, PFHxA, PFPeA, PFHpA, and PFOA were dominating, while at the Vistula River mouth, PFHxS, PFDS, and PFBS were prevalent. For most sediments, no toxic effect was observed in the toxicity tests with Heterocypris inconguens and Aliivibrio ficsheri. There was no observed correlation between the PFASs level and their ecotoxicity. Generally, the results of environmental risk assessment indicate that the PFASs would not generate high impact on the aquatic life (five water samples have shown medium risk related to PFBS and PFDoA).

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Spatial distribution of perfluoroalkyl acids in surface sediments of the German Bight, North Sea

Cited by 22 publications

References 60 publications

Refining uptake and depuration constants for fluoroalkyl chemicals in Chironomus riparius larvae on the basis of experimental results and modelling

Refining uptake and depuration constants for fluoroalkyl chemicals in Chironomus riparius larvae on the basis of experimental results and modelling

Inter-individual, inter-city, and temporal trends of per- and polyfluoroalkyl substances in human milk from Swedish mothers between 1972 and 2016

Environmental Risk Assessment Resulting from Sediment Contamination with Perfluoroalkyl Substances

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