Biogeochemical controls of the transport and cycling of persistent organic pollutants in the polar oceans
Humanity is currently using more than 200000 synthetic organic compounds in many industrial, agricultural and domestic applications. Many of these chemicals reach the environment and have a harmful effect on ecosystems and humans. Among them, the group of persistent organic pollutants (POPs) compris...
Main Author: | |
---|---|
Other Authors: | , |
Format: | Doctoral or Postdoctoral Thesis |
Language: | Spanish |
Published: |
Universitat Politècnica de Catalunya
2013
|
Subjects: | |
Online Access: | http://hdl.handle.net/2117/95127 http://hdl.handle.net/10803/129733 https://doi.org/10.5821/dissertation-2117-95127 |
id |
ftupcatalunyair:oai:upcommons.upc.edu:2117/95127 |
---|---|
record_format |
openpolar |
spelling |
ftupcatalunyair:oai:upcommons.upc.edu:2117/95127 2024-09-15T17:48:00+00:00 Biogeochemical controls of the transport and cycling of persistent organic pollutants in the polar oceans Galbán Malagón, Cristóbal Universitat Politècnica de Catalunya. Departament d'Enginyeria Hidràulica, Marítima i Ambiental Dachs, Jordi east=-40.19921320963215; north=35.10991780574295; name=Nord de l'Ocean Atlàntic east=-135.44144446976583; north=83.98964952747545; name=Ocean Àrtic east=-160.2340459; north=-68.4380135; name=Ocean Antàrtic 2013-09-20 365 p. application/pdf http://hdl.handle.net/2117/95127 http://hdl.handle.net/10803/129733 https://doi.org/10.5821/dissertation-2117-95127 spa spa Universitat Politècnica de Catalunya Galbán Malagón, C. Biogeochemical controls of the transport and cycling of persistent organic pollutants in the polar oceans. Tesi doctoral, UPC, Departament d'Enginyeria Hidràulica, Marítima i Ambiental, 2013. DOI 10.5821/dissertation-2117-95127 . http://hdl.handle.net/2117/95127 doi:10.5821/dissertation-2117-95127 B 5032-2014 http://hdl.handle.net/10803/129733 L'accés als continguts d'aquesta tesi queda condicionat a l'acceptació de les condicions d'ús establertes per la següent llicència Creative Commons: http://creativecommons.org/licenses/by-nc/3.0/es/ http://creativecommons.org/licenses/by-nc/3.0/es/ Open Access TDX (Tesis Doctorals en Xarxa) Àrees temàtiques de la UPC::Enginyeria civil Contaminants persistents Mar -- Contaminació Oceanografia Doctoral thesis 2013 ftupcatalunyair https://doi.org/10.5821/dissertation-2117-95127 2024-07-25T10:54:32Z Humanity is currently using more than 200000 synthetic organic compounds in many industrial, agricultural and domestic applications. Many of these chemicals reach the environment and have a harmful effect on ecosystems and humans. Among them, the group of persistent organic pollutants (POPs) comprises several families of compounds that have physical and chemical properties that give them the ability to be distributed and impact globally (semivolatility, high persistence and bioaccumulation capacity due to their hydrophobicity). In the present thesis, the coupling of atmospheric transport and biogeochemical cycles in the Arctic and Southern Ocean has been studied for Hexachlorocyclohexanes (HCHs), Hexachlorobenzene (HCB) and Polychlorinated Biphenyls (PCBs). Three oceanographic cruises were conducted, one in the North Atlantic and the Arctic Ocean (2007) and two in the Southern Ocean surrounding the Antarctic Peninsula (2008 and 2009). During these campaigns, air (gas and particulate), water (dissolved and particulate) and biota (phytoplankton) were sampled simultaneously allowing to report a complete picture of POPs cycling in polar areas. In the case of the Southern Ocean, the largest data set available for PCBs, HCH and HCB has been generated. The atmospheric and seawater concentrations were low, among the lowest reported for the Polar Oceans, and in the case of the Southern Ocean there is a clear historical trend of decreasing concentrations, consistent with reduced emissions in source regions. Long range atmospheric transport was identified as the main POPs input to polar ecosystems agreeing with previous works. However, it has been found that secondary local sources from soil and snow influences strongly the atmospheric concentrations overland in the Antarctic region, and over the adjacent Southern ocean in the case of HCHs. Atmospheric residence times calculated from the measurements were in agreement with the prediction from environmental fate models. The atmospheric residence times were longer for the ... Doctoral or Postdoctoral Thesis Antarc* Antarctic Antarctic Peninsula Arctic Ocean North Atlantic Phytoplankton Southern Ocean Universitat Politècnica de Catalunya, BarcelonaTech: UPCommons - Global access to UPC knowledge |
institution |
Open Polar |
collection |
Universitat Politècnica de Catalunya, BarcelonaTech: UPCommons - Global access to UPC knowledge |
op_collection_id |
ftupcatalunyair |
language |
Spanish |
topic |
Àrees temàtiques de la UPC::Enginyeria civil Contaminants persistents Mar -- Contaminació Oceanografia |
spellingShingle |
Àrees temàtiques de la UPC::Enginyeria civil Contaminants persistents Mar -- Contaminació Oceanografia Galbán Malagón, Cristóbal Biogeochemical controls of the transport and cycling of persistent organic pollutants in the polar oceans |
topic_facet |
Àrees temàtiques de la UPC::Enginyeria civil Contaminants persistents Mar -- Contaminació Oceanografia |
description |
Humanity is currently using more than 200000 synthetic organic compounds in many industrial, agricultural and domestic applications. Many of these chemicals reach the environment and have a harmful effect on ecosystems and humans. Among them, the group of persistent organic pollutants (POPs) comprises several families of compounds that have physical and chemical properties that give them the ability to be distributed and impact globally (semivolatility, high persistence and bioaccumulation capacity due to their hydrophobicity). In the present thesis, the coupling of atmospheric transport and biogeochemical cycles in the Arctic and Southern Ocean has been studied for Hexachlorocyclohexanes (HCHs), Hexachlorobenzene (HCB) and Polychlorinated Biphenyls (PCBs). Three oceanographic cruises were conducted, one in the North Atlantic and the Arctic Ocean (2007) and two in the Southern Ocean surrounding the Antarctic Peninsula (2008 and 2009). During these campaigns, air (gas and particulate), water (dissolved and particulate) and biota (phytoplankton) were sampled simultaneously allowing to report a complete picture of POPs cycling in polar areas. In the case of the Southern Ocean, the largest data set available for PCBs, HCH and HCB has been generated. The atmospheric and seawater concentrations were low, among the lowest reported for the Polar Oceans, and in the case of the Southern Ocean there is a clear historical trend of decreasing concentrations, consistent with reduced emissions in source regions. Long range atmospheric transport was identified as the main POPs input to polar ecosystems agreeing with previous works. However, it has been found that secondary local sources from soil and snow influences strongly the atmospheric concentrations overland in the Antarctic region, and over the adjacent Southern ocean in the case of HCHs. Atmospheric residence times calculated from the measurements were in agreement with the prediction from environmental fate models. The atmospheric residence times were longer for the ... |
author2 |
Universitat Politècnica de Catalunya. Departament d'Enginyeria Hidràulica, Marítima i Ambiental Dachs, Jordi |
format |
Doctoral or Postdoctoral Thesis |
author |
Galbán Malagón, Cristóbal |
author_facet |
Galbán Malagón, Cristóbal |
author_sort |
Galbán Malagón, Cristóbal |
title |
Biogeochemical controls of the transport and cycling of persistent organic pollutants in the polar oceans |
title_short |
Biogeochemical controls of the transport and cycling of persistent organic pollutants in the polar oceans |
title_full |
Biogeochemical controls of the transport and cycling of persistent organic pollutants in the polar oceans |
title_fullStr |
Biogeochemical controls of the transport and cycling of persistent organic pollutants in the polar oceans |
title_full_unstemmed |
Biogeochemical controls of the transport and cycling of persistent organic pollutants in the polar oceans |
title_sort |
biogeochemical controls of the transport and cycling of persistent organic pollutants in the polar oceans |
publisher |
Universitat Politècnica de Catalunya |
publishDate |
2013 |
url |
http://hdl.handle.net/2117/95127 http://hdl.handle.net/10803/129733 https://doi.org/10.5821/dissertation-2117-95127 |
op_coverage |
east=-40.19921320963215; north=35.10991780574295; name=Nord de l'Ocean Atlàntic east=-135.44144446976583; north=83.98964952747545; name=Ocean Àrtic east=-160.2340459; north=-68.4380135; name=Ocean Antàrtic |
genre |
Antarc* Antarctic Antarctic Peninsula Arctic Ocean North Atlantic Phytoplankton Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Arctic Ocean North Atlantic Phytoplankton Southern Ocean |
op_source |
TDX (Tesis Doctorals en Xarxa) |
op_relation |
Galbán Malagón, C. Biogeochemical controls of the transport and cycling of persistent organic pollutants in the polar oceans. Tesi doctoral, UPC, Departament d'Enginyeria Hidràulica, Marítima i Ambiental, 2013. DOI 10.5821/dissertation-2117-95127 . http://hdl.handle.net/2117/95127 doi:10.5821/dissertation-2117-95127 B 5032-2014 http://hdl.handle.net/10803/129733 |
op_rights |
L'accés als continguts d'aquesta tesi queda condicionat a l'acceptació de les condicions d'ús establertes per la següent llicència Creative Commons: http://creativecommons.org/licenses/by-nc/3.0/es/ http://creativecommons.org/licenses/by-nc/3.0/es/ Open Access |
op_doi |
https://doi.org/10.5821/dissertation-2117-95127 |
_version_ |
1810288665589448704 |