Concentrations of persistent organochlorine contaminants in bowhead whale tissue and other biota from northern Alaska: Implications for human exposure from subsistence diet. Environmental Research
Abstract Bowhead whale (Balaena mysticetus; n ¼ 5) blubber, liver, muscle, kidney, heart, diaphragm, tongue, and uncooked maktak (bowhead whale epidermis and blubber) were collected during subsistence hunts at Barrow, AK, USA (1997)(1998)(1999) to measure concentrations of persistent organochlorine...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.1090.2998 2023-05-15T15:36:01+02:00 Concentrations of persistent organochlorine contaminants in bowhead whale tissue and other biota from northern Alaska: Implications for human exposure from subsistence diet. Environmental Research $ P F Hoekstra T M O'hara S M Backus C Hanns D C G Muir The Pennsylvania State University CiteSeerX Archives 2005 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1090.2998 http://www.north-slope.org/assets/images/uploads/Hoekstra%20et%20al%202005%20%28OCs%20in%20Bowhead%20Whale%20Tissue%20-%20Human%20Health%20Exposure%29.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1090.2998 http://www.north-slope.org/assets/images/uploads/Hoekstra%20et%20al%202005%20%28OCs%20in%20Bowhead%20Whale%20Tissue%20-%20Human%20Health%20Exposure%29.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.north-slope.org/assets/images/uploads/Hoekstra%20et%20al%202005%20%28OCs%20in%20Bowhead%20Whale%20Tissue%20-%20Human%20Health%20Exposure%29.pdf text 2005 ftciteseerx 2020-05-24T00:22:48Z Abstract Bowhead whale (Balaena mysticetus; n ¼ 5) blubber, liver, muscle, kidney, heart, diaphragm, tongue, and uncooked maktak (bowhead whale epidermis and blubber) were collected during subsistence hunts at Barrow, AK, USA (1997)(1998)(1999) to measure concentrations of persistent organochlorine contaminants (OCs). The exposure of humans to OCs via bowhead whales and other biota [fish, ringed (Phoca hispida) and bearded seals (Erignathus barbatus), and beluga whale (Delphinapterus leucas)] as part of a subsistence diet was evaluated. Concentrations of OCs in bowhead whale tissues were correlated with lipid content (Po0:001) and were less than levels in other marine mammals reported herein, reflecting the lower trophic status of this cetacean. The relative proportions of hexachlorobenzene (HCB) and sum (S) concentrations of chlordane components (SCHL), DDT-related compounds (SDDT), and polychlorinated biphenyls (SPCB) were not statistically different among the tissues analyzed (Po0:05). However, relatively higher proportions of hexachlorocyclohexane isomers (SHCH), particularly b-HCH, were observed in bowhead whale heart and diaphragm (Po0:03). Based on Canadian and World Health Organization daily intake guidelines, ''safe'' human consumption rates of bowhead whale tissue and other marine biota were calculated. The most restrictive limits (mean value) for daily consumption for bowhead and beluga whale were 302 and 78 g for maktak and maktaaq (beluga whale epidermis and blubber), respectively. The tolerable daily intake limits of dioxin-like compounds from the consumption of bowhead whale blubber and liver were calculated to be 199 g (approximately 600 g for maktak) and 2222 g, respectively. A detailed profile of traditional/ country foods consumed by subsistence communities of northern Alaska is required to address chronic exposure in more detail. Overall, bowhead whale tissues and other biota from northern Alaska are safe to consume at, or below, the levels calculated. r Text Balaena mysticetus Barrow Beluga Beluga whale Beluga* bowhead whale Delphinapterus leucas Erignathus barbatus Phoca hispida Alaska Unknown |
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Abstract Bowhead whale (Balaena mysticetus; n ¼ 5) blubber, liver, muscle, kidney, heart, diaphragm, tongue, and uncooked maktak (bowhead whale epidermis and blubber) were collected during subsistence hunts at Barrow, AK, USA (1997)(1998)(1999) to measure concentrations of persistent organochlorine contaminants (OCs). The exposure of humans to OCs via bowhead whales and other biota [fish, ringed (Phoca hispida) and bearded seals (Erignathus barbatus), and beluga whale (Delphinapterus leucas)] as part of a subsistence diet was evaluated. Concentrations of OCs in bowhead whale tissues were correlated with lipid content (Po0:001) and were less than levels in other marine mammals reported herein, reflecting the lower trophic status of this cetacean. The relative proportions of hexachlorobenzene (HCB) and sum (S) concentrations of chlordane components (SCHL), DDT-related compounds (SDDT), and polychlorinated biphenyls (SPCB) were not statistically different among the tissues analyzed (Po0:05). However, relatively higher proportions of hexachlorocyclohexane isomers (SHCH), particularly b-HCH, were observed in bowhead whale heart and diaphragm (Po0:03). Based on Canadian and World Health Organization daily intake guidelines, ''safe'' human consumption rates of bowhead whale tissue and other marine biota were calculated. The most restrictive limits (mean value) for daily consumption for bowhead and beluga whale were 302 and 78 g for maktak and maktaaq (beluga whale epidermis and blubber), respectively. The tolerable daily intake limits of dioxin-like compounds from the consumption of bowhead whale blubber and liver were calculated to be 199 g (approximately 600 g for maktak) and 2222 g, respectively. A detailed profile of traditional/ country foods consumed by subsistence communities of northern Alaska is required to address chronic exposure in more detail. Overall, bowhead whale tissues and other biota from northern Alaska are safe to consume at, or below, the levels calculated. r |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
$ P F Hoekstra T M O'hara S M Backus C Hanns D C G Muir |
spellingShingle |
$ P F Hoekstra T M O'hara S M Backus C Hanns D C G Muir Concentrations of persistent organochlorine contaminants in bowhead whale tissue and other biota from northern Alaska: Implications for human exposure from subsistence diet. Environmental Research |
author_facet |
$ P F Hoekstra T M O'hara S M Backus C Hanns D C G Muir |
author_sort |
$ P F Hoekstra |
title |
Concentrations of persistent organochlorine contaminants in bowhead whale tissue and other biota from northern Alaska: Implications for human exposure from subsistence diet. Environmental Research |
title_short |
Concentrations of persistent organochlorine contaminants in bowhead whale tissue and other biota from northern Alaska: Implications for human exposure from subsistence diet. Environmental Research |
title_full |
Concentrations of persistent organochlorine contaminants in bowhead whale tissue and other biota from northern Alaska: Implications for human exposure from subsistence diet. Environmental Research |
title_fullStr |
Concentrations of persistent organochlorine contaminants in bowhead whale tissue and other biota from northern Alaska: Implications for human exposure from subsistence diet. Environmental Research |
title_full_unstemmed |
Concentrations of persistent organochlorine contaminants in bowhead whale tissue and other biota from northern Alaska: Implications for human exposure from subsistence diet. Environmental Research |
title_sort |
concentrations of persistent organochlorine contaminants in bowhead whale tissue and other biota from northern alaska: implications for human exposure from subsistence diet. environmental research |
publishDate |
2005 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1090.2998 http://www.north-slope.org/assets/images/uploads/Hoekstra%20et%20al%202005%20%28OCs%20in%20Bowhead%20Whale%20Tissue%20-%20Human%20Health%20Exposure%29.pdf |
genre |
Balaena mysticetus Barrow Beluga Beluga whale Beluga* bowhead whale Delphinapterus leucas Erignathus barbatus Phoca hispida Alaska |
genre_facet |
Balaena mysticetus Barrow Beluga Beluga whale Beluga* bowhead whale Delphinapterus leucas Erignathus barbatus Phoca hispida Alaska |
op_source |
http://www.north-slope.org/assets/images/uploads/Hoekstra%20et%20al%202005%20%28OCs%20in%20Bowhead%20Whale%20Tissue%20-%20Human%20Health%20Exposure%29.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1090.2998 http://www.north-slope.org/assets/images/uploads/Hoekstra%20et%20al%202005%20%28OCs%20in%20Bowhead%20Whale%20Tissue%20-%20Human%20Health%20Exposure%29.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766366353362518016 |