Net volatilization of PAHs from the North Pacific to the Arctic Ocean observed by passive sampling
The North Pacific-Arctic Oceans are important compartments for semi-volatile organic compounds’ (SVOCs) global marine inventory, but whether they act as a “source" or "sink†remains controversial. To study the air-sea exchange and fate of SVOCs during their poleward long-range transpo...
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ftunivrhodeislan:oai:digitalcommons.uri.edu:gsofacpubs-1731 2024-09-15T17:53:56+00:00 Net volatilization of PAHs from the North Pacific to the Arctic Ocean observed by passive sampling Zheng, Haowen Cai, Minggang Zhao, Wenlu Khairy, Mohammed Chen, Mian Deng, Hengxiang Lohmann, Rainer 2021-02-11T08:00:00Z application/pdf https://digitalcommons.uri.edu/gsofacpubs/765 https://doi.org/10.1016/j.envpol.2021.116728 https://digitalcommons.uri.edu/context/gsofacpubs/article/1731/viewcontent/auto_convert.pdf https://digitalcommons.uri.edu/context/gsofacpubs/article/1731/filename/0/type/additional/viewcontent/Revised_Supplemental_files_EP_7_Feb_2021.docx https://digitalcommons.uri.edu/context/gsofacpubs/article/1731/filename/1/type/additional/viewcontent/Revised_Highlights_files.docx https://digitalcommons.uri.edu/context/gsofacpubs/article/1731/filename/2/type/additional/viewcontent/Revised_Graphical_abstract.docx unknown DigitalCommons@URI https://digitalcommons.uri.edu/gsofacpubs/765 doi:10.1016/j.envpol.2021.116728 https://digitalcommons.uri.edu/context/gsofacpubs/article/1731/viewcontent/auto_convert.pdf https://digitalcommons.uri.edu/context/gsofacpubs/article/1731/filename/0/type/additional/viewcontent/Revised_Supplemental_files_EP_7_Feb_2021.docx https://digitalcommons.uri.edu/context/gsofacpubs/article/1731/filename/1/type/additional/viewcontent/Revised_Highlights_files.docx https://digitalcommons.uri.edu/context/gsofacpubs/article/1731/filename/2/type/additional/viewcontent/Revised_Graphical_abstract.docx Graduate School of Oceanography Faculty Publications text 2021 ftunivrhodeislan https://doi.org/10.1016/j.envpol.2021.116728 2024-08-21T00:09:33Z The North Pacific-Arctic Oceans are important compartments for semi-volatile organic compounds’ (SVOCs) global marine inventory, but whether they act as a “source" or "sink†remains controversial. To study the air-sea exchange and fate of SVOCs during their poleward long-range transport, low-altitude atmosphere and surface seawater were measured for polycyclic aromatic hydrocarbons (PAHs) by passive sampling from July to September in 2014. Gaseous PAH concentrations (0.67–13 ng m−3) were dominated by phenanthrene (Phe) and fluorene (Flu), which displayed an inverse correlation with latitude, as well as a significant linear relationship with partial pressure and inverse temperature. Concentrations of PAHs in seawater (1.8–16 ng L−1) showed regional characteristics, with higher levels near the East Asia and lower values in the Bering Strait. The potential impact from the East Asian monsoon was suggested for gaseous PAHs, which – similar to PAHs in surface seawater - were derived from combustion sources. In addition, the data implied net volatilization of PAHs from seawater into the air along the entire cruise; fluxes displayed a similar pattern to regional and monthly distribution of PAHs in seawater. Our results further emphasized that air-sea exchange is an important process for PAHs in the open marine environments. Text Arctic Ocean Bering Strait Pacific Arctic University of Rhode Island: DigitalCommons@URI Environmental Pollution 276 116728 |
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Open Polar |
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University of Rhode Island: DigitalCommons@URI |
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ftunivrhodeislan |
language |
unknown |
description |
The North Pacific-Arctic Oceans are important compartments for semi-volatile organic compounds’ (SVOCs) global marine inventory, but whether they act as a “source" or "sink†remains controversial. To study the air-sea exchange and fate of SVOCs during their poleward long-range transport, low-altitude atmosphere and surface seawater were measured for polycyclic aromatic hydrocarbons (PAHs) by passive sampling from July to September in 2014. Gaseous PAH concentrations (0.67–13 ng m−3) were dominated by phenanthrene (Phe) and fluorene (Flu), which displayed an inverse correlation with latitude, as well as a significant linear relationship with partial pressure and inverse temperature. Concentrations of PAHs in seawater (1.8–16 ng L−1) showed regional characteristics, with higher levels near the East Asia and lower values in the Bering Strait. The potential impact from the East Asian monsoon was suggested for gaseous PAHs, which – similar to PAHs in surface seawater - were derived from combustion sources. In addition, the data implied net volatilization of PAHs from seawater into the air along the entire cruise; fluxes displayed a similar pattern to regional and monthly distribution of PAHs in seawater. Our results further emphasized that air-sea exchange is an important process for PAHs in the open marine environments. |
format |
Text |
author |
Zheng, Haowen Cai, Minggang Zhao, Wenlu Khairy, Mohammed Chen, Mian Deng, Hengxiang Lohmann, Rainer |
spellingShingle |
Zheng, Haowen Cai, Minggang Zhao, Wenlu Khairy, Mohammed Chen, Mian Deng, Hengxiang Lohmann, Rainer Net volatilization of PAHs from the North Pacific to the Arctic Ocean observed by passive sampling |
author_facet |
Zheng, Haowen Cai, Minggang Zhao, Wenlu Khairy, Mohammed Chen, Mian Deng, Hengxiang Lohmann, Rainer |
author_sort |
Zheng, Haowen |
title |
Net volatilization of PAHs from the North Pacific to the Arctic Ocean observed by passive sampling |
title_short |
Net volatilization of PAHs from the North Pacific to the Arctic Ocean observed by passive sampling |
title_full |
Net volatilization of PAHs from the North Pacific to the Arctic Ocean observed by passive sampling |
title_fullStr |
Net volatilization of PAHs from the North Pacific to the Arctic Ocean observed by passive sampling |
title_full_unstemmed |
Net volatilization of PAHs from the North Pacific to the Arctic Ocean observed by passive sampling |
title_sort |
net volatilization of pahs from the north pacific to the arctic ocean observed by passive sampling |
publisher |
DigitalCommons@URI |
publishDate |
2021 |
url |
https://digitalcommons.uri.edu/gsofacpubs/765 https://doi.org/10.1016/j.envpol.2021.116728 https://digitalcommons.uri.edu/context/gsofacpubs/article/1731/viewcontent/auto_convert.pdf https://digitalcommons.uri.edu/context/gsofacpubs/article/1731/filename/0/type/additional/viewcontent/Revised_Supplemental_files_EP_7_Feb_2021.docx https://digitalcommons.uri.edu/context/gsofacpubs/article/1731/filename/1/type/additional/viewcontent/Revised_Highlights_files.docx https://digitalcommons.uri.edu/context/gsofacpubs/article/1731/filename/2/type/additional/viewcontent/Revised_Graphical_abstract.docx |
genre |
Arctic Ocean Bering Strait Pacific Arctic |
genre_facet |
Arctic Ocean Bering Strait Pacific Arctic |
op_source |
Graduate School of Oceanography Faculty Publications |
op_relation |
https://digitalcommons.uri.edu/gsofacpubs/765 doi:10.1016/j.envpol.2021.116728 https://digitalcommons.uri.edu/context/gsofacpubs/article/1731/viewcontent/auto_convert.pdf https://digitalcommons.uri.edu/context/gsofacpubs/article/1731/filename/0/type/additional/viewcontent/Revised_Supplemental_files_EP_7_Feb_2021.docx https://digitalcommons.uri.edu/context/gsofacpubs/article/1731/filename/1/type/additional/viewcontent/Revised_Highlights_files.docx https://digitalcommons.uri.edu/context/gsofacpubs/article/1731/filename/2/type/additional/viewcontent/Revised_Graphical_abstract.docx |
op_doi |
https://doi.org/10.1016/j.envpol.2021.116728 |
container_title |
Environmental Pollution |
container_volume |
276 |
container_start_page |
116728 |
_version_ |
1810430062240989184 |