Levels, sources and chemical fate of persistent organic pollutants in the atmosphere and snow along the western Antarctic Peninsula
The Antarctic continent is among the most pristine regions; yet various organic contaminants have been measured there routinely. Air and snow samples were collected during the austral spring (October November, 2010) along the western Antarctic Peninsula and analyzed for organochlorine pesticides (OC...
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ftwilliammarycol:oai:scholarworks.wm.edu:vimsarticles-1793 2023-06-11T04:05:40+02:00 Levels, sources and chemical fate of persistent organic pollutants in the atmosphere and snow along the western Antarctic Peninsula Khairy, MA Luek, JL Dickhut, R Lohmann, R 2016-01-01T08:00:00Z application/pdf https://scholarworks.wm.edu/vimsarticles/793 doi: 10.1016/j.envpol.2016.05.092 https://scholarworks.wm.edu/context/vimsarticles/article/1793/viewcontent/S026974911630481X.pdf unknown W&M ScholarWorks https://scholarworks.wm.edu/vimsarticles/793 doi: 10.1016/j.envpol.2016.05.092 https://scholarworks.wm.edu/context/vimsarticles/article/1793/viewcontent/S026974911630481X.pdf VIMS Articles Long-Range Transport Polycyclic Aromatic-Hydrocarbons Polybrominated Diphenyl Ethers Canadian Arctic Atmosphere King George Island Polychlorinated-Biphenyls Organochlorine Pesticides Pcb Concentrations Melting Glaciers Air Physical Sciences Peer-Reviewed Articles Aquaculture and Fisheries text 2016 ftwilliammarycol https://doi.org/10.1016/j.envpol.2016.05.092 2023-05-04T17:43:24Z The Antarctic continent is among the most pristine regions; yet various organic contaminants have been measured there routinely. Air and snow samples were collected during the austral spring (October November, 2010) along the western Antarctic Peninsula and analyzed for organochlorine pesticides (OCPs), polychlorinated biphenyls (PCBs) and polybrominated diphenyl ethers (PBDEs) to assess the relative importance of long-range transport versus local primary or secondary emissions. Highest concentrations of PCBs, PBDEs and DDTs were observed in the glacier's snow sample, highlighting the importance of melting glaciers as a possible secondary source of legacy pollutants to the Antarctic. In the atmosphere, contaminants were mainly found in the vapor phase (>65%). Hexachlorobenzene (33.6 pg/m(3)), PCBs (11.6 pg/m(3)), heptachlor (5.64 pg/m(3)), PBDEs (4.22 pg/m(3)) and cis-chlordane (2.43 pg/m(3)) were the most abundant contaminants. In contrast to other compounds, PBDEs seem to have originated from local sources, possibly the research station itself. Gas-particle partitioning for analytes were better predicted using the adsorption partitioning model than an octanol-based absorption approach. Diffusive flux calculations indicated that net deposition is the dominant pathway for PBDEs and chlordanes, whereas re-volatilization from snow (during melting or metamorphosis) was observed for PCBs and some OCPs. (C) 2016 Elsevier Ltd. All rights reserved. Text Antarc* Antarctic Antarctic Peninsula Arctic King George Island W&M ScholarWorks Arctic Antarctic The Antarctic Antarctic Peninsula Austral King George Island Environmental Pollution 216 304 313 |
institution |
Open Polar |
collection |
W&M ScholarWorks |
op_collection_id |
ftwilliammarycol |
language |
unknown |
topic |
Long-Range Transport Polycyclic Aromatic-Hydrocarbons Polybrominated Diphenyl Ethers Canadian Arctic Atmosphere King George Island Polychlorinated-Biphenyls Organochlorine Pesticides Pcb Concentrations Melting Glaciers Air Physical Sciences Peer-Reviewed Articles Aquaculture and Fisheries |
spellingShingle |
Long-Range Transport Polycyclic Aromatic-Hydrocarbons Polybrominated Diphenyl Ethers Canadian Arctic Atmosphere King George Island Polychlorinated-Biphenyls Organochlorine Pesticides Pcb Concentrations Melting Glaciers Air Physical Sciences Peer-Reviewed Articles Aquaculture and Fisheries Khairy, MA Luek, JL Dickhut, R Lohmann, R Levels, sources and chemical fate of persistent organic pollutants in the atmosphere and snow along the western Antarctic Peninsula |
topic_facet |
Long-Range Transport Polycyclic Aromatic-Hydrocarbons Polybrominated Diphenyl Ethers Canadian Arctic Atmosphere King George Island Polychlorinated-Biphenyls Organochlorine Pesticides Pcb Concentrations Melting Glaciers Air Physical Sciences Peer-Reviewed Articles Aquaculture and Fisheries |
description |
The Antarctic continent is among the most pristine regions; yet various organic contaminants have been measured there routinely. Air and snow samples were collected during the austral spring (October November, 2010) along the western Antarctic Peninsula and analyzed for organochlorine pesticides (OCPs), polychlorinated biphenyls (PCBs) and polybrominated diphenyl ethers (PBDEs) to assess the relative importance of long-range transport versus local primary or secondary emissions. Highest concentrations of PCBs, PBDEs and DDTs were observed in the glacier's snow sample, highlighting the importance of melting glaciers as a possible secondary source of legacy pollutants to the Antarctic. In the atmosphere, contaminants were mainly found in the vapor phase (>65%). Hexachlorobenzene (33.6 pg/m(3)), PCBs (11.6 pg/m(3)), heptachlor (5.64 pg/m(3)), PBDEs (4.22 pg/m(3)) and cis-chlordane (2.43 pg/m(3)) were the most abundant contaminants. In contrast to other compounds, PBDEs seem to have originated from local sources, possibly the research station itself. Gas-particle partitioning for analytes were better predicted using the adsorption partitioning model than an octanol-based absorption approach. Diffusive flux calculations indicated that net deposition is the dominant pathway for PBDEs and chlordanes, whereas re-volatilization from snow (during melting or metamorphosis) was observed for PCBs and some OCPs. (C) 2016 Elsevier Ltd. All rights reserved. |
format |
Text |
author |
Khairy, MA Luek, JL Dickhut, R Lohmann, R |
author_facet |
Khairy, MA Luek, JL Dickhut, R Lohmann, R |
author_sort |
Khairy, MA |
title |
Levels, sources and chemical fate of persistent organic pollutants in the atmosphere and snow along the western Antarctic Peninsula |
title_short |
Levels, sources and chemical fate of persistent organic pollutants in the atmosphere and snow along the western Antarctic Peninsula |
title_full |
Levels, sources and chemical fate of persistent organic pollutants in the atmosphere and snow along the western Antarctic Peninsula |
title_fullStr |
Levels, sources and chemical fate of persistent organic pollutants in the atmosphere and snow along the western Antarctic Peninsula |
title_full_unstemmed |
Levels, sources and chemical fate of persistent organic pollutants in the atmosphere and snow along the western Antarctic Peninsula |
title_sort |
levels, sources and chemical fate of persistent organic pollutants in the atmosphere and snow along the western antarctic peninsula |
publisher |
W&M ScholarWorks |
publishDate |
2016 |
url |
https://scholarworks.wm.edu/vimsarticles/793 https://scholarworks.wm.edu/context/vimsarticles/article/1793/viewcontent/S026974911630481X.pdf |
geographic |
Arctic Antarctic The Antarctic Antarctic Peninsula Austral King George Island |
geographic_facet |
Arctic Antarctic The Antarctic Antarctic Peninsula Austral King George Island |
genre |
Antarc* Antarctic Antarctic Peninsula Arctic King George Island |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Arctic King George Island |
op_source |
VIMS Articles |
op_relation |
https://scholarworks.wm.edu/vimsarticles/793 doi: 10.1016/j.envpol.2016.05.092 https://scholarworks.wm.edu/context/vimsarticles/article/1793/viewcontent/S026974911630481X.pdf |
op_doi |
https://doi.org/10.1016/j.envpol.2016.05.092 |
container_title |
Environmental Pollution |
container_volume |
216 |
container_start_page |
304 |
op_container_end_page |
313 |
_version_ |
1768377250616442880 |