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Are imported consumer products an important diffuse source of PFASs to the Norwegian environment?

https://arctichealth.org/en/permalink/ahliterature265398
Source
Environ Pollut. 2015 Mar;198:223-30
Publication Type
Article
Date
Mar-2015
Author
Robin Vestergren
Dorte Herzke
Thanh Wang
Ian T Cousins
Source
Environ Pollut. 2015 Mar;198:223-30
Date
Mar-2015
Language
English
Publication Type
Article
Keywords
Alcohols
Alkanesulfonic Acids - analysis
Caprylates
Carboxylic Acids
Environment
Environmental monitoring
Environmental Pollutants
Fluorocarbons - analysis
Manufactured Materials
Norway
Abstract
The aim of this study was to measure perfluoroalkyl substances in a selection of imported consumer products (n = 45) and estimate population normalized emission rates during the use phase. 6:2 and 8:2 fluorotelomer alcohol (FTOH) were found in the highest concentrations ranging from
PubMed ID
25644935 View in PubMed
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Per- and Polyfluoroalkyl-Contaminated Freshwater Impacts Adjacent Riparian Food Webs.

https://arctichealth.org/en/permalink/ahliterature304827
Source
Environ Sci Technol. 2020 10 06; 54(19):11951-11960
Publication Type
Journal Article
Research Support, Non-U.S. Gov't
Date
10-06-2020
Author
Alina Koch
Micael Jonsson
Leo W Y Yeung
Anna Kärrman
Lutz Ahrens
Alf Ekblad
Thanh Wang
Author Affiliation
Man-Technology-Environment Research Centre, Örebro University, 70182 Örebro, Sweden.
Source
Environ Sci Technol. 2020 10 06; 54(19):11951-11960
Date
10-06-2020
Language
English
Publication Type
Journal Article
Research Support, Non-U.S. Gov't
Keywords
Animals
Ecosystem
Food chain
Fresh Water
Invertebrates
Sweden
Water Pollutants, Chemical - analysis
Abstract
The occurrence of per- and polyfluoroalkyl substances (PFASs) in aquatic ecosystems is a global concern because of their persistence, potential bioaccumulation, and toxicity. In this study, we investigated a PFAS-contaminated pond in Sweden to assess the cross-boundary transfer of PFASs from the aquatic environment to the riparian zone via emergent aquatic insects. Aquatic and terrestrial invertebrates, surface water, sediments, soils, and plants were analyzed for 24 PFASs including branched isomers. Stable isotope analysis of carbon and nitrogen was performed to elucidate the importance of diet and trophic position for PFAS uptake. We present the first evidence that PFASs can propagate to the riparian food web via aquatic emergent insects. Elevated S24PFAS concentrations were found in aquatic insect larvae, such as dragon- and damselflies, ranging from 1100 to 4600 ng g-1 dry weight (dw), and remained high in emerged adults (120-3500 ng g-1 dw), indicating exposure risks for top predators that prey in riparian zones. In terrestrial invertebrate consumers, PFAS concentrations increased with the degree of aquatic-based diet and at higher trophic levels. Furthermore, stable isotope data together with calculated bioaccumulation factors indicated that bioconcentration of PFASs was the major pathway of exposure in the aquatic food web and bioaccumulation in the riparian food web.
PubMed ID
32870664 View in PubMed
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Point source characterization of per- and polyfluoroalkyl substances (PFASs) and extractable organofluorine (EOF) in freshwater and aquatic invertebrates.

https://arctichealth.org/en/permalink/ahliterature308878
Source
Environ Sci Process Impacts. 2019 Nov 01; 21(11):1887-1898
Publication Type
Journal Article
Date
Nov-01-2019
Author
Alina Koch
Anna Kärrman
Leo W Y Yeung
Micael Jonsson
Lutz Ahrens
Thanh Wang
Author Affiliation
Man-Technology-Environment Research Centre (MTM), School of Science and Technology, Örebro University, SE-70182 Örebro, Sweden. thanh.wang@oru.se alina.koch@oru.se.
Source
Environ Sci Process Impacts. 2019 Nov 01; 21(11):1887-1898
Date
Nov-01-2019
Language
English
Publication Type
Journal Article
Keywords
Animals
Aquatic Organisms - chemistry
Bioaccumulation
Environmental Monitoring - methods
Flame Retardants - analysis - metabolism
Fluorocarbons - analysis - metabolism
Fresh Water - chemistry
Invertebrates - chemistry
Sweden
Water Pollutants, Chemical - analysis - metabolism
Abstract
Major point sources of per- and polyfluoroalkyl substances (PFASs) cause ubiquitous spread of PFASs in the environment. In this study, surface water and aquatic invertebrates at three Swedish sites impacted by PFAS point sources were characterized, using homologue, isomer and extractable organofluorine (EOF) profiling as well as estimation of bioaccumulation factors (BAFs) and mass discharge. Two sites were impacted by fire training (sites A and R) and the third by industrial runoff (site K). Mean S25PFASs concentration in water was 1920 ng L-1 at site R (n = 3), which was more than 20- and 10-fold higher than those from sites A and K, respectively. PFOS was the most predominant PFAS in all waters samples, constituting 29-79% of S25PFAS concentrations. Several branched isomers were detected and they substantially contributed to concentrations in surface water (e.g. 49-78% of SPFOS) and aquatic invertebrates (e.g. 15-28% of SPFOS). BAFs in the aquatic invertebrates indicated higher bioaccumulation for long chain PFASs and lower bioaccumulation for branched PFOS isomers compared to linear PFOS. EOF mass balance showed that S25target PFASs in water could explain up to 55% of EOF at site R. However, larger proportions of EOF (>92%) remained unknown in water from sites A and K. Mass discharges were for the first time estimated for EOF and revealed that high amounts of EOF (e.g. 8.2 g F day-1 at site A) could be transported by water to recipient water bodies relative to S25PFASs (e.g. 0.15 g day-1 at site A). Overall, we showed that composition profiling, BAFs and EOF mass balance can improve the characterization of PFASs around point sources.
PubMed ID
31552402 View in PubMed
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