Mechanistic Insight into the Uptake and Fate of Persistent Organic Pollutants in Sea Ice
The fate of persistent organic pollutants in sea ice is a poorly researched area and yet ice serves as an important habitat for organisms at the base of the marine foodweb. This study presents laboratory-controlled experiments to investigate the mechanisms governing the fate of organic contaminants...
Published in: | Environmental Science & Technology |
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Language: | English |
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2019
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Online Access: | https://eprints.lancs.ac.uk/id/eprint/135125/ https://eprints.lancs.ac.uk/id/eprint/135125/1/Binder1.pdf |
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ftulancaster:oai:eprints.lancs.ac.uk:135125 2023-12-17T10:49:44+01:00 Mechanistic Insight into the Uptake and Fate of Persistent Organic Pollutants in Sea Ice Garnett, Jack Halsall, Crispin Thomas, Max France, James Kaiser, Jan Graf, Carola Leeson, Amber Wynn, Peter 2019-06-18 text https://eprints.lancs.ac.uk/id/eprint/135125/ https://eprints.lancs.ac.uk/id/eprint/135125/1/Binder1.pdf en eng https://eprints.lancs.ac.uk/id/eprint/135125/1/Binder1.pdf Garnett, Jack and Halsall, Crispin and Thomas, Max and France, James and Kaiser, Jan and Graf, Carola and Leeson, Amber and Wynn, Peter (2019) Mechanistic Insight into the Uptake and Fate of Persistent Organic Pollutants in Sea Ice. Environmental Science and Technology, 53 (12). pp. 6757-6764. ISSN 0013-936X creative_commons_attribution_noncommercial_4_0_international_license Journal Article PeerReviewed 2019 ftulancaster 2023-11-23T23:18:54Z The fate of persistent organic pollutants in sea ice is a poorly researched area and yet ice serves as an important habitat for organisms at the base of the marine foodweb. This study presents laboratory-controlled experiments to investigate the mechanisms governing the fate of organic contaminants in sea ice grown from artificial seawater. Sea ice formation was shown to result in the entrainment of chemicals from seawater, and concentration profiles in bulk ice generally showed the highest levels in both the upper (ice-atmosphere interface) and lower (ice-ocean interface) ice layers, suggesting their incorporation and distribution is influenced by brine advection. Results from a 1-D sea ice brine dynamics model supported this, but also indicated that other processes may be needed to accurately model low-polarity compounds in sea ice. This was reinforced by results from a melt experiment, which not only showed chemicals were more enriched in saltier brine, but also revealed that chemicals are released from sea ice at variable rates. We use our results to demonstrate the importance of processes related to the occurrence and movement of brine for controlling chemical fate in sea ice which provides a pathway for exposure to ice-associated biota at the base of the pelagic food web. Article in Journal/Newspaper Sea ice Lancaster University: Lancaster Eprints Environmental Science & Technology 53 12 6757 6764 |
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Open Polar |
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Lancaster University: Lancaster Eprints |
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ftulancaster |
language |
English |
description |
The fate of persistent organic pollutants in sea ice is a poorly researched area and yet ice serves as an important habitat for organisms at the base of the marine foodweb. This study presents laboratory-controlled experiments to investigate the mechanisms governing the fate of organic contaminants in sea ice grown from artificial seawater. Sea ice formation was shown to result in the entrainment of chemicals from seawater, and concentration profiles in bulk ice generally showed the highest levels in both the upper (ice-atmosphere interface) and lower (ice-ocean interface) ice layers, suggesting their incorporation and distribution is influenced by brine advection. Results from a 1-D sea ice brine dynamics model supported this, but also indicated that other processes may be needed to accurately model low-polarity compounds in sea ice. This was reinforced by results from a melt experiment, which not only showed chemicals were more enriched in saltier brine, but also revealed that chemicals are released from sea ice at variable rates. We use our results to demonstrate the importance of processes related to the occurrence and movement of brine for controlling chemical fate in sea ice which provides a pathway for exposure to ice-associated biota at the base of the pelagic food web. |
format |
Article in Journal/Newspaper |
author |
Garnett, Jack Halsall, Crispin Thomas, Max France, James Kaiser, Jan Graf, Carola Leeson, Amber Wynn, Peter |
spellingShingle |
Garnett, Jack Halsall, Crispin Thomas, Max France, James Kaiser, Jan Graf, Carola Leeson, Amber Wynn, Peter Mechanistic Insight into the Uptake and Fate of Persistent Organic Pollutants in Sea Ice |
author_facet |
Garnett, Jack Halsall, Crispin Thomas, Max France, James Kaiser, Jan Graf, Carola Leeson, Amber Wynn, Peter |
author_sort |
Garnett, Jack |
title |
Mechanistic Insight into the Uptake and Fate of Persistent Organic Pollutants in Sea Ice |
title_short |
Mechanistic Insight into the Uptake and Fate of Persistent Organic Pollutants in Sea Ice |
title_full |
Mechanistic Insight into the Uptake and Fate of Persistent Organic Pollutants in Sea Ice |
title_fullStr |
Mechanistic Insight into the Uptake and Fate of Persistent Organic Pollutants in Sea Ice |
title_full_unstemmed |
Mechanistic Insight into the Uptake and Fate of Persistent Organic Pollutants in Sea Ice |
title_sort |
mechanistic insight into the uptake and fate of persistent organic pollutants in sea ice |
publishDate |
2019 |
url |
https://eprints.lancs.ac.uk/id/eprint/135125/ https://eprints.lancs.ac.uk/id/eprint/135125/1/Binder1.pdf |
genre |
Sea ice |
genre_facet |
Sea ice |
op_relation |
https://eprints.lancs.ac.uk/id/eprint/135125/1/Binder1.pdf Garnett, Jack and Halsall, Crispin and Thomas, Max and France, James and Kaiser, Jan and Graf, Carola and Leeson, Amber and Wynn, Peter (2019) Mechanistic Insight into the Uptake and Fate of Persistent Organic Pollutants in Sea Ice. Environmental Science and Technology, 53 (12). pp. 6757-6764. ISSN 0013-936X |
op_rights |
creative_commons_attribution_noncommercial_4_0_international_license |
container_title |
Environmental Science & Technology |
container_volume |
53 |
container_issue |
12 |
container_start_page |
6757 |
op_container_end_page |
6764 |
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1785574300276752384 |