Highly persistent butyltins in northern marine sediments: A long‐term threat for the Saguenay Fjord (Canada)
Abstract An exhaustive study of the distribution of butyltin species was conducted in the sediment of the Saguenay Fjord (Canada), a semi‐enclosed marine system with sediment permanently submitted to sub‐Arctic cold conditions. Concentrations of total butyltins (tributyltin [TBT], dibutyltin, and mo...
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Language: | English |
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crwiley:10.1897/03-674 2024-06-23T07:50:37+00:00 Highly persistent butyltins in northern marine sediments: A long‐term threat for the Saguenay Fjord (Canada) Viglino, Liza Pelletier, Émilien St.‐Louis, Richard 2004 http://dx.doi.org/10.1897/03-674 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1897%2F03-674 https://setac.onlinelibrary.wiley.com/doi/pdf/10.1897/03-674 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Environmental Toxicology and Chemistry volume 23, issue 11, page 2673-2681 ISSN 0730-7268 1552-8618 journal-article 2004 crwiley https://doi.org/10.1897/03-674 2024-06-11T04:43:14Z Abstract An exhaustive study of the distribution of butyltin species was conducted in the sediment of the Saguenay Fjord (Canada), a semi‐enclosed marine system with sediment permanently submitted to sub‐Arctic cold conditions. Concentrations of total butyltins (tributyltin [TBT], dibutyltin, and monobutyltin) ranged from 6 to 288 ng Sn/g dry weight and were typical of those reported for contaminated coastal areas despite limited seasonal traffic of commercial vessels in the fjord. The distribution profiles of butyltin species in four sediment cores clearly indicated the high persistence of TBT that was dominating other species. The particular oceanographic conditions of the Saguenay Fjord (low seawater temperature, anoxic sediments, and low exchange rate of deep waters) combined with a high sediment/pore‐water partition coefficient ( K dobs = 1.0 × 10 4 to 1.2 × 10 4 L/kg) and a low sediment/water diffusive flux of TBT ( J 1 = 13 × 10 −8 mol/m 2 /year) are responsible for the burial and preservation of TBT in this marine ecosystem. The half‐life of TBT in deep sediment was estimated to be approximately 87 ± 17 years (± SEM), which implies a much slower degradation rate than any previously reported. Finally, a flood event that occurred five years before the sampling enabled us to calculate a very slow diffusive flux from the preflood to the postflood layer ( J 2 = 2 × 10 −8 mol/m 2 /year), indicating an almost permanent sequestration of TBT in the buried layers. Article in Journal/Newspaper Arctic Wiley Online Library Arctic Canada Environmental Toxicology and Chemistry 23 11 2673 2681 |
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Open Polar |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract An exhaustive study of the distribution of butyltin species was conducted in the sediment of the Saguenay Fjord (Canada), a semi‐enclosed marine system with sediment permanently submitted to sub‐Arctic cold conditions. Concentrations of total butyltins (tributyltin [TBT], dibutyltin, and monobutyltin) ranged from 6 to 288 ng Sn/g dry weight and were typical of those reported for contaminated coastal areas despite limited seasonal traffic of commercial vessels in the fjord. The distribution profiles of butyltin species in four sediment cores clearly indicated the high persistence of TBT that was dominating other species. The particular oceanographic conditions of the Saguenay Fjord (low seawater temperature, anoxic sediments, and low exchange rate of deep waters) combined with a high sediment/pore‐water partition coefficient ( K dobs = 1.0 × 10 4 to 1.2 × 10 4 L/kg) and a low sediment/water diffusive flux of TBT ( J 1 = 13 × 10 −8 mol/m 2 /year) are responsible for the burial and preservation of TBT in this marine ecosystem. The half‐life of TBT in deep sediment was estimated to be approximately 87 ± 17 years (± SEM), which implies a much slower degradation rate than any previously reported. Finally, a flood event that occurred five years before the sampling enabled us to calculate a very slow diffusive flux from the preflood to the postflood layer ( J 2 = 2 × 10 −8 mol/m 2 /year), indicating an almost permanent sequestration of TBT in the buried layers. |
format |
Article in Journal/Newspaper |
author |
Viglino, Liza Pelletier, Émilien St.‐Louis, Richard |
spellingShingle |
Viglino, Liza Pelletier, Émilien St.‐Louis, Richard Highly persistent butyltins in northern marine sediments: A long‐term threat for the Saguenay Fjord (Canada) |
author_facet |
Viglino, Liza Pelletier, Émilien St.‐Louis, Richard |
author_sort |
Viglino, Liza |
title |
Highly persistent butyltins in northern marine sediments: A long‐term threat for the Saguenay Fjord (Canada) |
title_short |
Highly persistent butyltins in northern marine sediments: A long‐term threat for the Saguenay Fjord (Canada) |
title_full |
Highly persistent butyltins in northern marine sediments: A long‐term threat for the Saguenay Fjord (Canada) |
title_fullStr |
Highly persistent butyltins in northern marine sediments: A long‐term threat for the Saguenay Fjord (Canada) |
title_full_unstemmed |
Highly persistent butyltins in northern marine sediments: A long‐term threat for the Saguenay Fjord (Canada) |
title_sort |
highly persistent butyltins in northern marine sediments: a long‐term threat for the saguenay fjord (canada) |
publisher |
Wiley |
publishDate |
2004 |
url |
http://dx.doi.org/10.1897/03-674 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1897%2F03-674 https://setac.onlinelibrary.wiley.com/doi/pdf/10.1897/03-674 |
geographic |
Arctic Canada |
geographic_facet |
Arctic Canada |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Environmental Toxicology and Chemistry volume 23, issue 11, page 2673-2681 ISSN 0730-7268 1552-8618 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1897/03-674 |
container_title |
Environmental Toxicology and Chemistry |
container_volume |
23 |
container_issue |
11 |
container_start_page |
2673 |
op_container_end_page |
2681 |
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1802641529300320256 |