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Concentrations, fluxes, and residence time of PBDEs across the tropical Atlantic Ocean
Graduate School of Oceanography, University of Rhode Island, Rhode Island, United States.ORCID iD: 0000-0001-8796-3229
Research Centre for Toxic Compounds in the Environment (RECETOX), Faculty of Science, Masaryk University, Brno, Czech Republic.ORCID iD: 0000-0002-8818-5307
Research Centre for Toxic Compounds in the Environment (RECETOX), Faculty of Science, Masaryk University, Brno, Czech Republic. (MTM)ORCID iD: 0000-0003-1733-8334
Graduate School of Oceanography, University of Rhode Island, Rhode Island, United States.
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2013 (English)In: Environmental Science and Technology, ISSN 0013-936X, E-ISSN 1520-5851, Vol. 47, no 24, 13967-13975 p.Article in journal (Refereed) Published
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Text
Abstract [en]

Little is known about the fate of polybrominated diphenylethers (PBDEs) across the Oceans. Air and water were sampled using both active and passive polyethylene samplers on an east-west transect across the tropical Atlantic Ocean in 2009 and analyzed for PBDEs. Typical particle-bound concentrations of PBDEs in the surface water were low, at <1 pg L-1. Truly dissolved concentrations from passive samplers were similar to 40.5 pg L-1 for BDE 47 and around 0.1 pg L-1 for BDEs 28, 99, and 100 (results from active samples were compromised). In the atmosphere, particle-bound BDE 209 dominated overall concentrations (median 1.2 pg m(-3)), followed by BDE 99 (0.13 pg m(-3)). Gas-phase concentrations based on passive samplers were 1-8 pg m(-3) for BDE 47 and <= 4 pg m(-3) for BDE 99. Net air-water exchange gradients strongly favored gas-phase deposition of PBDEs into the water. Net gas-phase deposition fluxes ranged from tens of pg m(-2) day(-1) for BDEs 28 and 85 to around 1 ng m(-2) day(-1) for BDE 47, 99, and 209. Settling fluxes of particle-bound PBDEs in the atmosphere and surface water were around 50 pg m(-2) day(-1) for BDE 47 and <10 pg m(-2) day(-1) for the other congeners.

Place, publisher, year, edition, pages
American Chemical Society (ACS), 2013. Vol. 47, no 24, 13967-13975 p.
National Category
Environmental Sciences
Research subject
Enviromental Science
Identifiers
URN: urn:nbn:se:oru:diva-49784DOI: 10.1021/es403494bISI: 000328796900010PubMedID: 24224767Scopus ID: 2-s2.0-84890597426OAI: oai:DiVA.org:oru-49784DiVA: diva2:918891
Note

Funding Agencies:

RI Endeavor Program (RIEP)

RECETOX research infrastructure (project of the Ministry of Education of the Czech Republic) LM2011028

CETOCOEN project of the European Structural Funds CZ.1.05/2.1.00/01.001

Available from: 2016-04-12 Created: 2016-04-12 Last updated: 2016-04-14Bibliographically approved

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