Trends of perfluorochemicals in Greenland ringed seals and polar bears:Indications of shifts to decreasing trends
Time-series of perfluorinated alkylated substances (PFASs) in East Greenland polar bears and East and West Greenland ringed seals were updated in order to deduce whether a response to the major reduction in perfluoroalkyl production in the early 2000s had occurred. Previous studies had documented an...
Published in: | Chemosphere |
---|---|
Main Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2013
|
Subjects: | |
Online Access: | https://pure.au.dk/portal/da/publications/trends-of-perfluorochemicals-in-greenland-ringed-seals-and-polar-bears(51466500-a09e-4815-a415-3f34e4172274).html https://doi.org/10.1016/j.chemosphere.2013.08.015 |
id |
ftuniaarhuspubl:oai:pure.atira.dk:publications/51466500-a09e-4815-a415-3f34e4172274 |
---|---|
record_format |
openpolar |
spelling |
ftuniaarhuspubl:oai:pure.atira.dk:publications/51466500-a09e-4815-a415-3f34e4172274 2023-05-15T15:11:27+02:00 Trends of perfluorochemicals in Greenland ringed seals and polar bears:Indications of shifts to decreasing trends Rigét, Frank Bossi, Rossana Sonne, Christian Vorkamp, Katrin Dietz, Rune 2013-09-08 https://pure.au.dk/portal/da/publications/trends-of-perfluorochemicals-in-greenland-ringed-seals-and-polar-bears(51466500-a09e-4815-a415-3f34e4172274).html https://doi.org/10.1016/j.chemosphere.2013.08.015 eng eng info:eu-repo/semantics/restrictedAccess Rigét , F , Bossi , R , Sonne , C , Vorkamp , K & Dietz , R 2013 , ' Trends of perfluorochemicals in Greenland ringed seals and polar bears : Indications of shifts to decreasing trends ' , Chemosphere , vol. 93 , no. 8 , pp. 1607–1614 . https://doi.org/10.1016/j.chemosphere.2013.08.015 article 2013 ftuniaarhuspubl https://doi.org/10.1016/j.chemosphere.2013.08.015 2022-01-26T23:49:26Z Time-series of perfluorinated alkylated substances (PFASs) in East Greenland polar bears and East and West Greenland ringed seals were updated in order to deduce whether a response to the major reduction in perfluoroalkyl production in the early 2000s had occurred. Previous studies had documented an exponential increase of perfluorooctane sulphonate (PFOS) in liver tissue from both species. In the present study, PFOS was still the far most dominant compound constituting 92% (West Greenland ringed seals), 88% (East Greenland ringed seals) and 85% (East Greenland polar bears). The PFOS concentrations increased up to 2006 with doubling times of approximately 6years for the ringed seal populations and 14years in case of polar bears. Since then a rapid decrease has occurred with clearing half-lives of approximately 1, 2 and 4years, respectively. In polar bears perfluorohexane sulphonate (PFHxS) and perfluorooctane sulphonamide (PFOSA) also showed decreasing trends in recent years as do perfluorodecanoic acid (PFDA) and perfluoroundecanoic acid (PFUnA). For the West Greenland ringed seal population perfluorooctanoic acid (PFOA), perfluorononanoic acid (PFNA), PFDA and PFUnA peaked in the mid 2000s, whereas PFNA, PFDA and PFUnA in the East Greenland population have been stable or increasing in recent years. The peak of PFASs in Greenland ringed seals and polar bears occurred at a later time than in Canadian seals and polar bears and considerably later than observed in seal species from more southern latitudes. We suggest that this could be explained by the distance to emission hot-spots and differences in long-range transport to the Arctic. Article in Journal/Newspaper Arctic East Greenland Greenland ringed seal Aarhus University: Research Arctic Greenland Chemosphere 93 8 1607 1614 |
institution |
Open Polar |
collection |
Aarhus University: Research |
op_collection_id |
ftuniaarhuspubl |
language |
English |
description |
Time-series of perfluorinated alkylated substances (PFASs) in East Greenland polar bears and East and West Greenland ringed seals were updated in order to deduce whether a response to the major reduction in perfluoroalkyl production in the early 2000s had occurred. Previous studies had documented an exponential increase of perfluorooctane sulphonate (PFOS) in liver tissue from both species. In the present study, PFOS was still the far most dominant compound constituting 92% (West Greenland ringed seals), 88% (East Greenland ringed seals) and 85% (East Greenland polar bears). The PFOS concentrations increased up to 2006 with doubling times of approximately 6years for the ringed seal populations and 14years in case of polar bears. Since then a rapid decrease has occurred with clearing half-lives of approximately 1, 2 and 4years, respectively. In polar bears perfluorohexane sulphonate (PFHxS) and perfluorooctane sulphonamide (PFOSA) also showed decreasing trends in recent years as do perfluorodecanoic acid (PFDA) and perfluoroundecanoic acid (PFUnA). For the West Greenland ringed seal population perfluorooctanoic acid (PFOA), perfluorononanoic acid (PFNA), PFDA and PFUnA peaked in the mid 2000s, whereas PFNA, PFDA and PFUnA in the East Greenland population have been stable or increasing in recent years. The peak of PFASs in Greenland ringed seals and polar bears occurred at a later time than in Canadian seals and polar bears and considerably later than observed in seal species from more southern latitudes. We suggest that this could be explained by the distance to emission hot-spots and differences in long-range transport to the Arctic. |
format |
Article in Journal/Newspaper |
author |
Rigét, Frank Bossi, Rossana Sonne, Christian Vorkamp, Katrin Dietz, Rune |
spellingShingle |
Rigét, Frank Bossi, Rossana Sonne, Christian Vorkamp, Katrin Dietz, Rune Trends of perfluorochemicals in Greenland ringed seals and polar bears:Indications of shifts to decreasing trends |
author_facet |
Rigét, Frank Bossi, Rossana Sonne, Christian Vorkamp, Katrin Dietz, Rune |
author_sort |
Rigét, Frank |
title |
Trends of perfluorochemicals in Greenland ringed seals and polar bears:Indications of shifts to decreasing trends |
title_short |
Trends of perfluorochemicals in Greenland ringed seals and polar bears:Indications of shifts to decreasing trends |
title_full |
Trends of perfluorochemicals in Greenland ringed seals and polar bears:Indications of shifts to decreasing trends |
title_fullStr |
Trends of perfluorochemicals in Greenland ringed seals and polar bears:Indications of shifts to decreasing trends |
title_full_unstemmed |
Trends of perfluorochemicals in Greenland ringed seals and polar bears:Indications of shifts to decreasing trends |
title_sort |
trends of perfluorochemicals in greenland ringed seals and polar bears:indications of shifts to decreasing trends |
publishDate |
2013 |
url |
https://pure.au.dk/portal/da/publications/trends-of-perfluorochemicals-in-greenland-ringed-seals-and-polar-bears(51466500-a09e-4815-a415-3f34e4172274).html https://doi.org/10.1016/j.chemosphere.2013.08.015 |
geographic |
Arctic Greenland |
geographic_facet |
Arctic Greenland |
genre |
Arctic East Greenland Greenland ringed seal |
genre_facet |
Arctic East Greenland Greenland ringed seal |
op_source |
Rigét , F , Bossi , R , Sonne , C , Vorkamp , K & Dietz , R 2013 , ' Trends of perfluorochemicals in Greenland ringed seals and polar bears : Indications of shifts to decreasing trends ' , Chemosphere , vol. 93 , no. 8 , pp. 1607–1614 . https://doi.org/10.1016/j.chemosphere.2013.08.015 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1016/j.chemosphere.2013.08.015 |
container_title |
Chemosphere |
container_volume |
93 |
container_issue |
8 |
container_start_page |
1607 |
op_container_end_page |
1614 |
_version_ |
1766342302930829312 |