Polychlorinated biphenyl (PCB) concentrations and profiles in marine mammals from the North Atlantic Ocean
Polychlorinated biphenyls (PCBs) can provide crucial information into the bioaccumulation and biomagnification of POPs in marine mammals. Muscle tissue samples were obtained for detailed PCB congener specific analysis of all 209 PCBs in 11 species of marine mammals stranded across the coast of the U...
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2022
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ftuhipublicatio:oai:pure.atira.dk:publications/1a3bd9d0-3b0e-41c2-bf1f-b2bb1374fccd 2024-09-15T18:16:45+00:00 Polychlorinated biphenyl (PCB) concentrations and profiles in marine mammals from the North Atlantic Ocean Megson, David Brown, Thomas Jones, Gareth Rhys Robson, Mathew Johnson, Glenn W. Tiktak, Guuske P. Sandau, Courtney D. Reiner, Eric J. 2022-02-01 https://pure.uhi.ac.uk/en/publications/1a3bd9d0-3b0e-41c2-bf1f-b2bb1374fccd https://doi.org/10.1016/j.chemosphere.2021.132639 https://linkinghub.elsevier.com/retrieve/pii/S0045653521031118 eng eng https://pure.uhi.ac.uk/en/publications/1a3bd9d0-3b0e-41c2-bf1f-b2bb1374fccd info:eu-repo/semantics/openAccess Megson , D , Brown , T , Jones , G R , Robson , M , Johnson , G W , Tiktak , G P , Sandau , C D & Reiner , E J 2022 , ' Polychlorinated biphenyl (PCB) concentrations and profiles in marine mammals from the North Atlantic Ocean ' , Chemosphere , vol. 288 , no. 3 , 132639 . https://doi.org/10.1016/j.chemosphere.2021.132639 , https://doi.org/10.1016/j.chemosphere.2021.132639 Polychlorinated biphenyls PCBs Enantiomer fractions Marine mammal Multivariate statistical analysis article 2022 ftuhipublicatio https://doi.org/10.1016/j.chemosphere.2021.132639 2024-08-05T23:36:06Z Polychlorinated biphenyls (PCBs) can provide crucial information into the bioaccumulation and biomagnification of POPs in marine mammals. Muscle tissue samples were obtained for detailed PCB congener specific analysis of all 209 PCBs in 11 species of marine mammals stranded across the coast of the UK between 2010 and 2013. At least 145 PCB congeners were found in each individual. The highest concentrations of PCBs were recorded in a killer whale (318 mg/kg lipid) and the highest toxic equivalent in a Risso's dolphin (1687 pg/g TEQ2005 wet). Concentrations of PCBs in the majority of samples exceeded toxic thresholds (9 mg/kg lipid) for marine mammals, highlighting the health risk they face from PCB exposure. Many PCB profiles did not fit typical ‘Aroclor’ signatures, but instead indicated patterns of congeners that are resistant to biotransformation and elimination. However, this study identified a novel PCB signature in a sei whale that has not yet been previously observed in marine mammals. The whale had a PCB profile that included lighter and inadvertent PCB congeners such as PCB 11, suggesting that the main source of exposure was through atmospheric deposition, rather than terrestrial discharges. Seven subsamples were chosen for chiral analysis of PCB 95, 136 and 149. The enantiomer fractions (EFs) of C-PCBs 95 and 149 were non racemic suggesting there may be enantiomer selective metabolism in marine mammals. Although there has been a shift in the literature towards emerging pollutants, this study acts as a stark reminder that PCBs continue to pose a significant risk to wildlife Article in Journal/Newspaper Killer Whale North Atlantic Sei Whale Killer whale University of the Highlands and Islands: Research Database of UHI Chemosphere 288 132639 |
institution |
Open Polar |
collection |
University of the Highlands and Islands: Research Database of UHI |
op_collection_id |
ftuhipublicatio |
language |
English |
topic |
Polychlorinated biphenyls PCBs Enantiomer fractions Marine mammal Multivariate statistical analysis |
spellingShingle |
Polychlorinated biphenyls PCBs Enantiomer fractions Marine mammal Multivariate statistical analysis Megson, David Brown, Thomas Jones, Gareth Rhys Robson, Mathew Johnson, Glenn W. Tiktak, Guuske P. Sandau, Courtney D. Reiner, Eric J. Polychlorinated biphenyl (PCB) concentrations and profiles in marine mammals from the North Atlantic Ocean |
topic_facet |
Polychlorinated biphenyls PCBs Enantiomer fractions Marine mammal Multivariate statistical analysis |
description |
Polychlorinated biphenyls (PCBs) can provide crucial information into the bioaccumulation and biomagnification of POPs in marine mammals. Muscle tissue samples were obtained for detailed PCB congener specific analysis of all 209 PCBs in 11 species of marine mammals stranded across the coast of the UK between 2010 and 2013. At least 145 PCB congeners were found in each individual. The highest concentrations of PCBs were recorded in a killer whale (318 mg/kg lipid) and the highest toxic equivalent in a Risso's dolphin (1687 pg/g TEQ2005 wet). Concentrations of PCBs in the majority of samples exceeded toxic thresholds (9 mg/kg lipid) for marine mammals, highlighting the health risk they face from PCB exposure. Many PCB profiles did not fit typical ‘Aroclor’ signatures, but instead indicated patterns of congeners that are resistant to biotransformation and elimination. However, this study identified a novel PCB signature in a sei whale that has not yet been previously observed in marine mammals. The whale had a PCB profile that included lighter and inadvertent PCB congeners such as PCB 11, suggesting that the main source of exposure was through atmospheric deposition, rather than terrestrial discharges. Seven subsamples were chosen for chiral analysis of PCB 95, 136 and 149. The enantiomer fractions (EFs) of C-PCBs 95 and 149 were non racemic suggesting there may be enantiomer selective metabolism in marine mammals. Although there has been a shift in the literature towards emerging pollutants, this study acts as a stark reminder that PCBs continue to pose a significant risk to wildlife |
format |
Article in Journal/Newspaper |
author |
Megson, David Brown, Thomas Jones, Gareth Rhys Robson, Mathew Johnson, Glenn W. Tiktak, Guuske P. Sandau, Courtney D. Reiner, Eric J. |
author_facet |
Megson, David Brown, Thomas Jones, Gareth Rhys Robson, Mathew Johnson, Glenn W. Tiktak, Guuske P. Sandau, Courtney D. Reiner, Eric J. |
author_sort |
Megson, David |
title |
Polychlorinated biphenyl (PCB) concentrations and profiles in marine mammals from the North Atlantic Ocean |
title_short |
Polychlorinated biphenyl (PCB) concentrations and profiles in marine mammals from the North Atlantic Ocean |
title_full |
Polychlorinated biphenyl (PCB) concentrations and profiles in marine mammals from the North Atlantic Ocean |
title_fullStr |
Polychlorinated biphenyl (PCB) concentrations and profiles in marine mammals from the North Atlantic Ocean |
title_full_unstemmed |
Polychlorinated biphenyl (PCB) concentrations and profiles in marine mammals from the North Atlantic Ocean |
title_sort |
polychlorinated biphenyl (pcb) concentrations and profiles in marine mammals from the north atlantic ocean |
publishDate |
2022 |
url |
https://pure.uhi.ac.uk/en/publications/1a3bd9d0-3b0e-41c2-bf1f-b2bb1374fccd https://doi.org/10.1016/j.chemosphere.2021.132639 https://linkinghub.elsevier.com/retrieve/pii/S0045653521031118 |
genre |
Killer Whale North Atlantic Sei Whale Killer whale |
genre_facet |
Killer Whale North Atlantic Sei Whale Killer whale |
op_source |
Megson , D , Brown , T , Jones , G R , Robson , M , Johnson , G W , Tiktak , G P , Sandau , C D & Reiner , E J 2022 , ' Polychlorinated biphenyl (PCB) concentrations and profiles in marine mammals from the North Atlantic Ocean ' , Chemosphere , vol. 288 , no. 3 , 132639 . https://doi.org/10.1016/j.chemosphere.2021.132639 , https://doi.org/10.1016/j.chemosphere.2021.132639 |
op_relation |
https://pure.uhi.ac.uk/en/publications/1a3bd9d0-3b0e-41c2-bf1f-b2bb1374fccd |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1016/j.chemosphere.2021.132639 |
container_title |
Chemosphere |
container_volume |
288 |
container_start_page |
132639 |
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1810454746900725760 |