Temporal shifts in poly- and perfluoroalkyl substances (PFASs) in North Atlantic pilot whales indicate large contribution of atmospheric precursors
Poly- and perfluoroalkyl substances (PFASs) are persistent, bioaccumulative anthropogenic compounds associated with adverse health impacts on humans and wildlife. PFAS production changed in North America and Europe around the year 2000, but impacts on wildlife appear to vary across species and locat...
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Online Access: | http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7784705/ http://www.ncbi.nlm.nih.gov/pubmed/28350446 https://doi.org/10.1021/acs.est.7b00293 |
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ftpubmed:oai:pubmedcentral.nih.gov:7784705 2023-05-15T17:31:06+02:00 Temporal shifts in poly- and perfluoroalkyl substances (PFASs) in North Atlantic pilot whales indicate large contribution of atmospheric precursors Dassuncao, Clifton Hu, Xindi C. Zhang, Xianming Bossi, Rossana Dam, Maria Mikkelsen, Bjarni Sunderland, Elsie M. 2017-03-28 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7784705/ http://www.ncbi.nlm.nih.gov/pubmed/28350446 https://doi.org/10.1021/acs.est.7b00293 en eng http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7784705/ http://www.ncbi.nlm.nih.gov/pubmed/28350446 http://dx.doi.org/10.1021/acs.est.7b00293 Environ Sci Technol Article Text 2017 ftpubmed https://doi.org/10.1021/acs.est.7b00293 2021-01-10T01:39:39Z Poly- and perfluoroalkyl substances (PFASs) are persistent, bioaccumulative anthropogenic compounds associated with adverse health impacts on humans and wildlife. PFAS production changed in North America and Europe around the year 2000, but impacts on wildlife appear to vary across species and location. Unlike other mammal species, cetaceans lack the enzyme for transforming an important intermediate precursor (perfluorooctane sulfonamide: FOSA), into a prevalent compound in most wildlife (perfluorooctane sulfonate: PFOS). Thus, their tissue burden differentiates these two compounds while other mammals contain PFOS from both direct exposure and precursor degradation. Here we report temporal trends in 15 PFASs measured in muscle from juvenile male North Atlantic pilot whales (Globicephala melas) harvested between 1986 and 2013. FOSA accounted for a peak of 84% of the 15 PFASs around 2000 but declined to 34% in recent years. PFOS and long-chained PFCAs (C9-C13) increased significantly over the whole period (2.8% yr(−1) to 8.3% yr(−1)), but FOSA declined by 13% yr(−1) after 2006. Results from FOSA partitioning and bioaccumulation modeling forced by changes in atmospheric inputs reasonably capture magnitudes and temporal patterns in FOSA concentrations measured in pilot whales. Rapid changes in atmospheric FOSA in polar and subpolar regions around 2000 helps to explain large declines in PFOS exposure for species that metabolize FOSA, including seafood consuming human populations. This work reinforces the importance of accounting for biological exposures to PFAS precursors. Text North Atlantic PubMed Central (PMC) Environmental Science & Technology 51 8 4512 4521 |
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Article Dassuncao, Clifton Hu, Xindi C. Zhang, Xianming Bossi, Rossana Dam, Maria Mikkelsen, Bjarni Sunderland, Elsie M. Temporal shifts in poly- and perfluoroalkyl substances (PFASs) in North Atlantic pilot whales indicate large contribution of atmospheric precursors |
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Article |
description |
Poly- and perfluoroalkyl substances (PFASs) are persistent, bioaccumulative anthropogenic compounds associated with adverse health impacts on humans and wildlife. PFAS production changed in North America and Europe around the year 2000, but impacts on wildlife appear to vary across species and location. Unlike other mammal species, cetaceans lack the enzyme for transforming an important intermediate precursor (perfluorooctane sulfonamide: FOSA), into a prevalent compound in most wildlife (perfluorooctane sulfonate: PFOS). Thus, their tissue burden differentiates these two compounds while other mammals contain PFOS from both direct exposure and precursor degradation. Here we report temporal trends in 15 PFASs measured in muscle from juvenile male North Atlantic pilot whales (Globicephala melas) harvested between 1986 and 2013. FOSA accounted for a peak of 84% of the 15 PFASs around 2000 but declined to 34% in recent years. PFOS and long-chained PFCAs (C9-C13) increased significantly over the whole period (2.8% yr(−1) to 8.3% yr(−1)), but FOSA declined by 13% yr(−1) after 2006. Results from FOSA partitioning and bioaccumulation modeling forced by changes in atmospheric inputs reasonably capture magnitudes and temporal patterns in FOSA concentrations measured in pilot whales. Rapid changes in atmospheric FOSA in polar and subpolar regions around 2000 helps to explain large declines in PFOS exposure for species that metabolize FOSA, including seafood consuming human populations. This work reinforces the importance of accounting for biological exposures to PFAS precursors. |
format |
Text |
author |
Dassuncao, Clifton Hu, Xindi C. Zhang, Xianming Bossi, Rossana Dam, Maria Mikkelsen, Bjarni Sunderland, Elsie M. |
author_facet |
Dassuncao, Clifton Hu, Xindi C. Zhang, Xianming Bossi, Rossana Dam, Maria Mikkelsen, Bjarni Sunderland, Elsie M. |
author_sort |
Dassuncao, Clifton |
title |
Temporal shifts in poly- and perfluoroalkyl substances (PFASs) in North Atlantic pilot whales indicate large contribution of atmospheric precursors |
title_short |
Temporal shifts in poly- and perfluoroalkyl substances (PFASs) in North Atlantic pilot whales indicate large contribution of atmospheric precursors |
title_full |
Temporal shifts in poly- and perfluoroalkyl substances (PFASs) in North Atlantic pilot whales indicate large contribution of atmospheric precursors |
title_fullStr |
Temporal shifts in poly- and perfluoroalkyl substances (PFASs) in North Atlantic pilot whales indicate large contribution of atmospheric precursors |
title_full_unstemmed |
Temporal shifts in poly- and perfluoroalkyl substances (PFASs) in North Atlantic pilot whales indicate large contribution of atmospheric precursors |
title_sort |
temporal shifts in poly- and perfluoroalkyl substances (pfass) in north atlantic pilot whales indicate large contribution of atmospheric precursors |
publishDate |
2017 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7784705/ http://www.ncbi.nlm.nih.gov/pubmed/28350446 https://doi.org/10.1021/acs.est.7b00293 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Environ Sci Technol |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7784705/ http://www.ncbi.nlm.nih.gov/pubmed/28350446 http://dx.doi.org/10.1021/acs.est.7b00293 |
op_doi |
https://doi.org/10.1021/acs.est.7b00293 |
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Environmental Science & Technology |
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51 |
container_issue |
8 |
container_start_page |
4512 |
op_container_end_page |
4521 |
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1766128432818683904 |