Polychlorinated dibenzodioxins, dibenzofurans and non-ortho substituted polychlorinated biphenyls in caribou (Rangifer tarandus) from the Canadian Arctic
The presence of contaminants in the Arctic environment has raised concerns regarding levels in wildlife and possible effects on the health of wildlife populations. In addition, contaminants in wild foods are of particular concern to those people who rely on these foodstuffs for a significant portion...
Published in: | Science of The Total Environment |
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Language: | English |
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1996
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Online Access: | https://ir.library.carleton.ca/pub/15770 https://doi.org/10.1016/0048-9697(95)05065-5 |
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ftcarletonunivir:oai:carleton.ca:15770 2023-05-15T14:45:35+02:00 Polychlorinated dibenzodioxins, dibenzofurans and non-ortho substituted polychlorinated biphenyls in caribou (Rangifer tarandus) from the Canadian Arctic Hebert, C.E. (Craig) Gamberg, M. (M.) Elkin, B.T. (B. T.) Simon, M. (M.) Norstrom, R.J. (R. J.) 1996-04-26 https://ir.library.carleton.ca/pub/15770 https://doi.org/10.1016/0048-9697(95)05065-5 en eng https://ir.library.carleton.ca/pub/15770 doi:10.1016/0048-9697(95)05065-5 Science of the Total Environment vol. 183 no. 3, pp. 195-204 Canadian Arctic caribou (Rangifer tarandus) dibenzodioxins dibenzofurans polychlorinated biphenyls info:eu-repo/semantics/article 1996 ftcarletonunivir https://doi.org/10.1016/0048-9697(95)05065-5 2022-02-06T21:50:11Z The presence of contaminants in the Arctic environment has raised concerns regarding levels in wildlife and possible effects on the health of wildlife populations. In addition, contaminants in wild foods are of particular concern to those people who rely on these foodstuffs for a significant portion of their diet. Among the most toxic contaminants found in the environment are the polychlorinated dibenzo-p-dioxins (PCDDs), polychlorinated dibenzofurans (PCDFs) and non-ortho substituted polychlorinated biphenyls (NOPCBs). Few data exist documenting the levels of these compounds in Arctic terrestrial wildlife. In 1993, caribou samples were obtained from three herds in the Yukon Territory (Finlayson, Tay and Bonnet Plume) and from four herds in the Northwest Territories (Bathurst, Southampton Island, Cape Dorset and Lake Harbour). High resolution gas-chromatography/mass spectrometry was used to measure contaminant concentrations. Wet weight concentrations of PCDDs, PCDFs and NOPCBs were greater in fat tissue than in muscle and liver, however, concentrations in all tissues were extremely low. Lipid normalized concentrations were greater in muscle and liver than in fat, indicating that equilibrium partitioning is not the only process regulating tissue concentrations of these contaminants. There were no significant relationships between concentrations of individual congeners and caribou age. Concentrations of the non-ortho substituted PCBs #126 and #169 were greater in caribou from the eastern Arctic, although levels in all herds were low. 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) toxic equivalents were also Article in Journal/Newspaper Arctic Cape Dorset Northwest Territories Rangifer tarandus Southampton Island Yukon Carleton University's Institutional Repository Arctic Cape Dorset ENVELOPE(-76.482,-76.482,64.179,64.179) Lake Harbour ENVELOPE(-69.848,-69.848,62.834,62.834) Northwest Territories Southampton Island ENVELOPE(-84.501,-84.501,64.463,64.463) Tay ENVELOPE(-55.750,-55.750,-63.367,-63.367) Yukon Science of The Total Environment 183 3 195 204 |
institution |
Open Polar |
collection |
Carleton University's Institutional Repository |
op_collection_id |
ftcarletonunivir |
language |
English |
topic |
Canadian Arctic caribou (Rangifer tarandus) dibenzodioxins dibenzofurans polychlorinated biphenyls |
spellingShingle |
Canadian Arctic caribou (Rangifer tarandus) dibenzodioxins dibenzofurans polychlorinated biphenyls Hebert, C.E. (Craig) Gamberg, M. (M.) Elkin, B.T. (B. T.) Simon, M. (M.) Norstrom, R.J. (R. J.) Polychlorinated dibenzodioxins, dibenzofurans and non-ortho substituted polychlorinated biphenyls in caribou (Rangifer tarandus) from the Canadian Arctic |
topic_facet |
Canadian Arctic caribou (Rangifer tarandus) dibenzodioxins dibenzofurans polychlorinated biphenyls |
description |
The presence of contaminants in the Arctic environment has raised concerns regarding levels in wildlife and possible effects on the health of wildlife populations. In addition, contaminants in wild foods are of particular concern to those people who rely on these foodstuffs for a significant portion of their diet. Among the most toxic contaminants found in the environment are the polychlorinated dibenzo-p-dioxins (PCDDs), polychlorinated dibenzofurans (PCDFs) and non-ortho substituted polychlorinated biphenyls (NOPCBs). Few data exist documenting the levels of these compounds in Arctic terrestrial wildlife. In 1993, caribou samples were obtained from three herds in the Yukon Territory (Finlayson, Tay and Bonnet Plume) and from four herds in the Northwest Territories (Bathurst, Southampton Island, Cape Dorset and Lake Harbour). High resolution gas-chromatography/mass spectrometry was used to measure contaminant concentrations. Wet weight concentrations of PCDDs, PCDFs and NOPCBs were greater in fat tissue than in muscle and liver, however, concentrations in all tissues were extremely low. Lipid normalized concentrations were greater in muscle and liver than in fat, indicating that equilibrium partitioning is not the only process regulating tissue concentrations of these contaminants. There were no significant relationships between concentrations of individual congeners and caribou age. Concentrations of the non-ortho substituted PCBs #126 and #169 were greater in caribou from the eastern Arctic, although levels in all herds were low. 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) toxic equivalents were also |
format |
Article in Journal/Newspaper |
author |
Hebert, C.E. (Craig) Gamberg, M. (M.) Elkin, B.T. (B. T.) Simon, M. (M.) Norstrom, R.J. (R. J.) |
author_facet |
Hebert, C.E. (Craig) Gamberg, M. (M.) Elkin, B.T. (B. T.) Simon, M. (M.) Norstrom, R.J. (R. J.) |
author_sort |
Hebert, C.E. (Craig) |
title |
Polychlorinated dibenzodioxins, dibenzofurans and non-ortho substituted polychlorinated biphenyls in caribou (Rangifer tarandus) from the Canadian Arctic |
title_short |
Polychlorinated dibenzodioxins, dibenzofurans and non-ortho substituted polychlorinated biphenyls in caribou (Rangifer tarandus) from the Canadian Arctic |
title_full |
Polychlorinated dibenzodioxins, dibenzofurans and non-ortho substituted polychlorinated biphenyls in caribou (Rangifer tarandus) from the Canadian Arctic |
title_fullStr |
Polychlorinated dibenzodioxins, dibenzofurans and non-ortho substituted polychlorinated biphenyls in caribou (Rangifer tarandus) from the Canadian Arctic |
title_full_unstemmed |
Polychlorinated dibenzodioxins, dibenzofurans and non-ortho substituted polychlorinated biphenyls in caribou (Rangifer tarandus) from the Canadian Arctic |
title_sort |
polychlorinated dibenzodioxins, dibenzofurans and non-ortho substituted polychlorinated biphenyls in caribou (rangifer tarandus) from the canadian arctic |
publishDate |
1996 |
url |
https://ir.library.carleton.ca/pub/15770 https://doi.org/10.1016/0048-9697(95)05065-5 |
long_lat |
ENVELOPE(-76.482,-76.482,64.179,64.179) ENVELOPE(-69.848,-69.848,62.834,62.834) ENVELOPE(-84.501,-84.501,64.463,64.463) ENVELOPE(-55.750,-55.750,-63.367,-63.367) |
geographic |
Arctic Cape Dorset Lake Harbour Northwest Territories Southampton Island Tay Yukon |
geographic_facet |
Arctic Cape Dorset Lake Harbour Northwest Territories Southampton Island Tay Yukon |
genre |
Arctic Cape Dorset Northwest Territories Rangifer tarandus Southampton Island Yukon |
genre_facet |
Arctic Cape Dorset Northwest Territories Rangifer tarandus Southampton Island Yukon |
op_source |
Science of the Total Environment vol. 183 no. 3, pp. 195-204 |
op_relation |
https://ir.library.carleton.ca/pub/15770 doi:10.1016/0048-9697(95)05065-5 |
op_doi |
https://doi.org/10.1016/0048-9697(95)05065-5 |
container_title |
Science of The Total Environment |
container_volume |
183 |
container_issue |
3 |
container_start_page |
195 |
op_container_end_page |
204 |
_version_ |
1766316968114126848 |