Fluorine Mass Balance and Suspect Screening in Marine Mammals from the Northern Hemisphere
There is increasing evidence that the ~20 routinely monitored per- and polyfluoroalkyl substances (PFASs) account for only a fraction of extractable organofluorine (EOF) occurring in the environment. To assess whether PFAS exposure is being underestimated in marine mammals from the Northern Hemisphe...
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cracsoc:10.26434/chemrxiv.10128653 2023-07-30T04:03:54+02:00 Fluorine Mass Balance and Suspect Screening in Marine Mammals from the Northern Hemisphere Spaan, Kyra van Noordenburg, Carmen Plassmann, Merle Schultes, Lara Shaw, Susan D. Berger, Michelle Heide-Jørgensen, Mads Peter Rosing-Asvid, Aqqalu Granquist, Sandra Dietz, Rune Sonne, Christian Rigét, Frank Roos, Anna Benskin, Jonathan 2019 http://dx.doi.org/10.26434/chemrxiv.10128653 https://ndownloader.figshare.com/files/18253916 unknown American Chemical Society (ACS) https://creativecommons.org/licenses/by-nc-nd/4.0/ posted-content 2019 cracsoc https://doi.org/10.26434/chemrxiv.10128653 2023-07-16T21:52:14Z There is increasing evidence that the ~20 routinely monitored per- and polyfluoroalkyl substances (PFASs) account for only a fraction of extractable organofluorine (EOF) occurring in the environment. To assess whether PFAS exposure is being underestimated in marine mammals from the Northern Hemisphere, we performed a fluorine mass balance on liver tissues from 11 different species using a combination of targeted PFAS analysis, EOF and total fluorine determination, and suspect screening. Samples were obtained from the east coast United States (US), west and east coast of Greenland, Iceland, and Sweden from 2000-2017. Of the 36 target PFASs, perfluorooctane sulfonate (PFOS) dominated in all but one Icelandic and three US samples, where the 7:3 fluorotelomer carboxylic acid (7:3 FTCA) was prevalent. This is the first report of 7:3 FTCA in polar bears (~1000 ng/g, ww) and cetaceans (<6-190 ng/g, ww). In 18 out of 25 samples, EOF was not significantly greater than fluorine concentrations derived from sum target PFASs. For the remaining 7 samples (mostly from the US east coast), 30-75% of the EOF was unidentified. Suspect screening revealed an additional 33 PFASs (not included in the targeted analysis) bringing the total to 59 detected PFASs from 12 different classes. Overall, these results highlight the importance of a multi-platform approach for accurately characterizing PFAS exposure in marine mammals. Other/Unknown Material Greenland Iceland ACS Publications (via Crossref) Greenland |
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ACS Publications (via Crossref) |
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description |
There is increasing evidence that the ~20 routinely monitored per- and polyfluoroalkyl substances (PFASs) account for only a fraction of extractable organofluorine (EOF) occurring in the environment. To assess whether PFAS exposure is being underestimated in marine mammals from the Northern Hemisphere, we performed a fluorine mass balance on liver tissues from 11 different species using a combination of targeted PFAS analysis, EOF and total fluorine determination, and suspect screening. Samples were obtained from the east coast United States (US), west and east coast of Greenland, Iceland, and Sweden from 2000-2017. Of the 36 target PFASs, perfluorooctane sulfonate (PFOS) dominated in all but one Icelandic and three US samples, where the 7:3 fluorotelomer carboxylic acid (7:3 FTCA) was prevalent. This is the first report of 7:3 FTCA in polar bears (~1000 ng/g, ww) and cetaceans (<6-190 ng/g, ww). In 18 out of 25 samples, EOF was not significantly greater than fluorine concentrations derived from sum target PFASs. For the remaining 7 samples (mostly from the US east coast), 30-75% of the EOF was unidentified. Suspect screening revealed an additional 33 PFASs (not included in the targeted analysis) bringing the total to 59 detected PFASs from 12 different classes. Overall, these results highlight the importance of a multi-platform approach for accurately characterizing PFAS exposure in marine mammals. |
format |
Other/Unknown Material |
author |
Spaan, Kyra van Noordenburg, Carmen Plassmann, Merle Schultes, Lara Shaw, Susan D. Berger, Michelle Heide-Jørgensen, Mads Peter Rosing-Asvid, Aqqalu Granquist, Sandra Dietz, Rune Sonne, Christian Rigét, Frank Roos, Anna Benskin, Jonathan |
spellingShingle |
Spaan, Kyra van Noordenburg, Carmen Plassmann, Merle Schultes, Lara Shaw, Susan D. Berger, Michelle Heide-Jørgensen, Mads Peter Rosing-Asvid, Aqqalu Granquist, Sandra Dietz, Rune Sonne, Christian Rigét, Frank Roos, Anna Benskin, Jonathan Fluorine Mass Balance and Suspect Screening in Marine Mammals from the Northern Hemisphere |
author_facet |
Spaan, Kyra van Noordenburg, Carmen Plassmann, Merle Schultes, Lara Shaw, Susan D. Berger, Michelle Heide-Jørgensen, Mads Peter Rosing-Asvid, Aqqalu Granquist, Sandra Dietz, Rune Sonne, Christian Rigét, Frank Roos, Anna Benskin, Jonathan |
author_sort |
Spaan, Kyra |
title |
Fluorine Mass Balance and Suspect Screening in Marine Mammals from the Northern Hemisphere |
title_short |
Fluorine Mass Balance and Suspect Screening in Marine Mammals from the Northern Hemisphere |
title_full |
Fluorine Mass Balance and Suspect Screening in Marine Mammals from the Northern Hemisphere |
title_fullStr |
Fluorine Mass Balance and Suspect Screening in Marine Mammals from the Northern Hemisphere |
title_full_unstemmed |
Fluorine Mass Balance and Suspect Screening in Marine Mammals from the Northern Hemisphere |
title_sort |
fluorine mass balance and suspect screening in marine mammals from the northern hemisphere |
publisher |
American Chemical Society (ACS) |
publishDate |
2019 |
url |
http://dx.doi.org/10.26434/chemrxiv.10128653 https://ndownloader.figshare.com/files/18253916 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Iceland |
genre_facet |
Greenland Iceland |
op_rights |
https://creativecommons.org/licenses/by-nc-nd/4.0/ |
op_doi |
https://doi.org/10.26434/chemrxiv.10128653 |
_version_ |
1772815018758242304 |