Depth Profiles of Persistent Organic Pollutants in the North and Tropical Atlantic Ocean
Little is known of the distribution of persistent organic pollutants (POPs) in the deep ocean. Polyethylene passive samplers were used to detect the vertical distribution of truly dissolved POPs at two sites in the Atlantic Ocean. Samplers were deployed at five depths covering 26–2535 m in the north...
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Online Access: | https://digitalcommons.uri.edu/gsofacpubs/149 https://doi.org/10.1021/acs.est.5b05891 https://digitalcommons.uri.edu/context/gsofacpubs/article/1155/viewcontent/auto_convert.pdf https://digitalcommons.uri.edu/context/gsofacpubs/article/1155/filename/0/type/additional/viewcontent/Lohmann_DepthProfiles_SuppInfo_2016.doc |
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ftunivrhodeislan:oai:digitalcommons.uri.edu:gsofacpubs-1155 2023-07-30T04:05:17+02:00 Depth Profiles of Persistent Organic Pollutants in the North and Tropical Atlantic Ocean Sun, Caoxin Soltwedel, Thomas Bauerfeind, Eduard Adelman, Dave A. Lohmann, Rainer 2016-05-13T07:00:00Z application/pdf https://digitalcommons.uri.edu/gsofacpubs/149 https://doi.org/10.1021/acs.est.5b05891 https://digitalcommons.uri.edu/context/gsofacpubs/article/1155/viewcontent/auto_convert.pdf https://digitalcommons.uri.edu/context/gsofacpubs/article/1155/filename/0/type/additional/viewcontent/Lohmann_DepthProfiles_SuppInfo_2016.doc unknown DigitalCommons@URI https://digitalcommons.uri.edu/gsofacpubs/149 doi:10.1021/acs.est.5b05891 https://digitalcommons.uri.edu/context/gsofacpubs/article/1155/viewcontent/auto_convert.pdf https://digitalcommons.uri.edu/context/gsofacpubs/article/1155/filename/0/type/additional/viewcontent/Lohmann_DepthProfiles_SuppInfo_2016.doc Graduate School of Oceanography Faculty Publications text 2016 ftunivrhodeislan https://doi.org/10.1021/acs.est.5b05891 2023-07-17T18:55:08Z Little is known of the distribution of persistent organic pollutants (POPs) in the deep ocean. Polyethylene passive samplers were used to detect the vertical distribution of truly dissolved POPs at two sites in the Atlantic Ocean. Samplers were deployed at five depths covering 26–2535 m in the northern Atlantic and Tropical Atlantic, in approximately one year deployments. Samplers of different thickness were used to determine the state of equilibrium POPs reached in the passive samplers. Concentrations of POPs detected in the North Atlantic near the surface (e.g., sum of 14 polychlorinated biphenyls, PCBs: 0.84 pg L–1) were similar to previous measurements. At both sites, PCB concentrations showed subsurface maxima (tropical Atlantic Ocean −800 m, North Atlantic −500 m). Currents seemed more important in moving POPs to deeper water masses than the biological pump. The ratio of PCB concentrations in near surface waters (excluding PCB-28) between the two sites was inversely correlated with congeners’ subcooled liquid vapor pressure, in support of the latitudinal fractionation. The results presented here implied a significant amount of HCB is stored in the Atlantic Ocean (4.8–26% of the global HCB environmental burdens), contrasting traditional beliefs that POPs do not reach the deep ocean. Text North Atlantic University of Rhode Island: DigitalCommons@URI Environmental Science & Technology 50 12 6172 6179 |
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University of Rhode Island: DigitalCommons@URI |
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ftunivrhodeislan |
language |
unknown |
description |
Little is known of the distribution of persistent organic pollutants (POPs) in the deep ocean. Polyethylene passive samplers were used to detect the vertical distribution of truly dissolved POPs at two sites in the Atlantic Ocean. Samplers were deployed at five depths covering 26–2535 m in the northern Atlantic and Tropical Atlantic, in approximately one year deployments. Samplers of different thickness were used to determine the state of equilibrium POPs reached in the passive samplers. Concentrations of POPs detected in the North Atlantic near the surface (e.g., sum of 14 polychlorinated biphenyls, PCBs: 0.84 pg L–1) were similar to previous measurements. At both sites, PCB concentrations showed subsurface maxima (tropical Atlantic Ocean −800 m, North Atlantic −500 m). Currents seemed more important in moving POPs to deeper water masses than the biological pump. The ratio of PCB concentrations in near surface waters (excluding PCB-28) between the two sites was inversely correlated with congeners’ subcooled liquid vapor pressure, in support of the latitudinal fractionation. The results presented here implied a significant amount of HCB is stored in the Atlantic Ocean (4.8–26% of the global HCB environmental burdens), contrasting traditional beliefs that POPs do not reach the deep ocean. |
format |
Text |
author |
Sun, Caoxin Soltwedel, Thomas Bauerfeind, Eduard Adelman, Dave A. Lohmann, Rainer |
spellingShingle |
Sun, Caoxin Soltwedel, Thomas Bauerfeind, Eduard Adelman, Dave A. Lohmann, Rainer Depth Profiles of Persistent Organic Pollutants in the North and Tropical Atlantic Ocean |
author_facet |
Sun, Caoxin Soltwedel, Thomas Bauerfeind, Eduard Adelman, Dave A. Lohmann, Rainer |
author_sort |
Sun, Caoxin |
title |
Depth Profiles of Persistent Organic Pollutants in the North and Tropical Atlantic Ocean |
title_short |
Depth Profiles of Persistent Organic Pollutants in the North and Tropical Atlantic Ocean |
title_full |
Depth Profiles of Persistent Organic Pollutants in the North and Tropical Atlantic Ocean |
title_fullStr |
Depth Profiles of Persistent Organic Pollutants in the North and Tropical Atlantic Ocean |
title_full_unstemmed |
Depth Profiles of Persistent Organic Pollutants in the North and Tropical Atlantic Ocean |
title_sort |
depth profiles of persistent organic pollutants in the north and tropical atlantic ocean |
publisher |
DigitalCommons@URI |
publishDate |
2016 |
url |
https://digitalcommons.uri.edu/gsofacpubs/149 https://doi.org/10.1021/acs.est.5b05891 https://digitalcommons.uri.edu/context/gsofacpubs/article/1155/viewcontent/auto_convert.pdf https://digitalcommons.uri.edu/context/gsofacpubs/article/1155/filename/0/type/additional/viewcontent/Lohmann_DepthProfiles_SuppInfo_2016.doc |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Graduate School of Oceanography Faculty Publications |
op_relation |
https://digitalcommons.uri.edu/gsofacpubs/149 doi:10.1021/acs.est.5b05891 https://digitalcommons.uri.edu/context/gsofacpubs/article/1155/viewcontent/auto_convert.pdf https://digitalcommons.uri.edu/context/gsofacpubs/article/1155/filename/0/type/additional/viewcontent/Lohmann_DepthProfiles_SuppInfo_2016.doc |
op_doi |
https://doi.org/10.1021/acs.est.5b05891 |
container_title |
Environmental Science & Technology |
container_volume |
50 |
container_issue |
12 |
container_start_page |
6172 |
op_container_end_page |
6179 |
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1772817109479325696 |