Three decades (1983–2010) of contaminant trends in East Greenland polar bears (Ursus maritimus). Part 2: Brominated flame retardants
Brominated flame retardants were determined in adipose tissues from 294 polar bears (Ursus maritimus) sampled in East Greenland in 23 of the 28 years between 1983 and 2010. Significant linear increases were found for sum polybrominated diphenyl ether (ΣPBDE), BDE100, BDE153, and hexabromocyclododeca...
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ftdoajarticles:oai:doaj.org/article:021964a36844463dbfed41588fcb7cf1 2023-05-15T16:03:34+02:00 Three decades (1983–2010) of contaminant trends in East Greenland polar bears (Ursus maritimus). Part 2: Brominated flame retardants Rune Dietz Frank F. Rigét Christian Sonne Erik W. Born Thea Bechshøft Melissa A. McKinney Robert J. Drimmie Derek C.G. Muir Robert J. Letcher 2013-09-01T00:00:00Z https://doi.org/10.1016/j.envint.2012.09.008 https://doaj.org/article/021964a36844463dbfed41588fcb7cf1 EN eng Elsevier http://www.sciencedirect.com/science/article/pii/S0160412012002061 https://doaj.org/toc/0160-4120 0160-4120 doi:10.1016/j.envint.2012.09.008 https://doaj.org/article/021964a36844463dbfed41588fcb7cf1 Environment International, Vol 59, Iss , Pp 494-500 (2013) Environmental sciences GE1-350 article 2013 ftdoajarticles https://doi.org/10.1016/j.envint.2012.09.008 2022-12-31T00:12:25Z Brominated flame retardants were determined in adipose tissues from 294 polar bears (Ursus maritimus) sampled in East Greenland in 23 of the 28 years between 1983 and 2010. Significant linear increases were found for sum polybrominated diphenyl ether (ΣPBDE), BDE100, BDE153, and hexabromocyclododecane (HBCD). Average increases of 5.0% per year (range: 2.9–7.6%/year) were found for the subadult polar bears. BDE47 and BDE99 concentrations did not show a significant linear trend over time, but rather a significant non-linear trend peaking between 2000 and 2004. The average ΣPBDE concentrations increased 2.3 fold from 25.0 ng/g lw (95% C.I.: 15.3–34.7 ng/g lw) in 1983–1986 to 58.5 ng/g lw (95% C.I.: 43.6–73.4 ng/g lw) in 2006–2010. Similar but fewer statistically significant trends were found for adult females and adult males likely due to smaller sample size and years. Analyses of δ15N and δ13C stable isotopes in hair revealed no clear linear temporal trends in trophic level or carbon source, respectively, and non-linear trends differed among sex and age groups. These increasing concentrations of organobromine contaminants contribute to complex organohalogen mixture, already causing health effects to the East Greenland polar bears. Keywords: Polar bear (Ursus maritimus), Brominated flame retardants, HBCD, PBDE, Temporal trends Article in Journal/Newspaper East Greenland Greenland Ursus maritimus Directory of Open Access Journals: DOAJ Articles Greenland Environment International 59 494 500 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Environmental sciences GE1-350 |
spellingShingle |
Environmental sciences GE1-350 Rune Dietz Frank F. Rigét Christian Sonne Erik W. Born Thea Bechshøft Melissa A. McKinney Robert J. Drimmie Derek C.G. Muir Robert J. Letcher Three decades (1983–2010) of contaminant trends in East Greenland polar bears (Ursus maritimus). Part 2: Brominated flame retardants |
topic_facet |
Environmental sciences GE1-350 |
description |
Brominated flame retardants were determined in adipose tissues from 294 polar bears (Ursus maritimus) sampled in East Greenland in 23 of the 28 years between 1983 and 2010. Significant linear increases were found for sum polybrominated diphenyl ether (ΣPBDE), BDE100, BDE153, and hexabromocyclododecane (HBCD). Average increases of 5.0% per year (range: 2.9–7.6%/year) were found for the subadult polar bears. BDE47 and BDE99 concentrations did not show a significant linear trend over time, but rather a significant non-linear trend peaking between 2000 and 2004. The average ΣPBDE concentrations increased 2.3 fold from 25.0 ng/g lw (95% C.I.: 15.3–34.7 ng/g lw) in 1983–1986 to 58.5 ng/g lw (95% C.I.: 43.6–73.4 ng/g lw) in 2006–2010. Similar but fewer statistically significant trends were found for adult females and adult males likely due to smaller sample size and years. Analyses of δ15N and δ13C stable isotopes in hair revealed no clear linear temporal trends in trophic level or carbon source, respectively, and non-linear trends differed among sex and age groups. These increasing concentrations of organobromine contaminants contribute to complex organohalogen mixture, already causing health effects to the East Greenland polar bears. Keywords: Polar bear (Ursus maritimus), Brominated flame retardants, HBCD, PBDE, Temporal trends |
format |
Article in Journal/Newspaper |
author |
Rune Dietz Frank F. Rigét Christian Sonne Erik W. Born Thea Bechshøft Melissa A. McKinney Robert J. Drimmie Derek C.G. Muir Robert J. Letcher |
author_facet |
Rune Dietz Frank F. Rigét Christian Sonne Erik W. Born Thea Bechshøft Melissa A. McKinney Robert J. Drimmie Derek C.G. Muir Robert J. Letcher |
author_sort |
Rune Dietz |
title |
Three decades (1983–2010) of contaminant trends in East Greenland polar bears (Ursus maritimus). Part 2: Brominated flame retardants |
title_short |
Three decades (1983–2010) of contaminant trends in East Greenland polar bears (Ursus maritimus). Part 2: Brominated flame retardants |
title_full |
Three decades (1983–2010) of contaminant trends in East Greenland polar bears (Ursus maritimus). Part 2: Brominated flame retardants |
title_fullStr |
Three decades (1983–2010) of contaminant trends in East Greenland polar bears (Ursus maritimus). Part 2: Brominated flame retardants |
title_full_unstemmed |
Three decades (1983–2010) of contaminant trends in East Greenland polar bears (Ursus maritimus). Part 2: Brominated flame retardants |
title_sort |
three decades (1983–2010) of contaminant trends in east greenland polar bears (ursus maritimus). part 2: brominated flame retardants |
publisher |
Elsevier |
publishDate |
2013 |
url |
https://doi.org/10.1016/j.envint.2012.09.008 https://doaj.org/article/021964a36844463dbfed41588fcb7cf1 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
East Greenland Greenland Ursus maritimus |
genre_facet |
East Greenland Greenland Ursus maritimus |
op_source |
Environment International, Vol 59, Iss , Pp 494-500 (2013) |
op_relation |
http://www.sciencedirect.com/science/article/pii/S0160412012002061 https://doaj.org/toc/0160-4120 0160-4120 doi:10.1016/j.envint.2012.09.008 https://doaj.org/article/021964a36844463dbfed41588fcb7cf1 |
op_doi |
https://doi.org/10.1016/j.envint.2012.09.008 |
container_title |
Environment International |
container_volume |
59 |
container_start_page |
494 |
op_container_end_page |
500 |
_version_ |
1766399252866531328 |