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Concentrations, flu...
Concentrations, fluxes, and residence time of PBDEs across the tropical Atlantic Ocean
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- Lohmann, Rainer (författare)
- Graduate School of Oceanography, University of Rhode Island, Rhode Island, United States
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- Klanova, Jana (författare)
- Research Centre for Toxic Compounds in the Environment (RECETOX), Faculty of Science, Masaryk University, Brno, Czech Republic
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- Kukucka, Petr, 1982- (författare)
- Research Centre for Toxic Compounds in the Environment (RECETOX), Faculty of Science, Masaryk University, Brno, Czech Republic,MTM
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- Yonis, Shifra (författare)
- Graduate School of Oceanography, University of Rhode Island, Rhode Island, United States
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- Bollinger, Kevyn (författare)
- Graduate School of Oceanography, University of Rhode Island, Rhode Island, United States
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(creator_code:org_t)
- 2013-11-27
- 2013
- Engelska.
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Ingår i: Environmental Science and Technology. - : American Chemical Society (ACS). - 0013-936X .- 1520-5851. ; 47:24, s. 13967-13975
- Relaterad länk:
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https://digitalcommo...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- 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.
Ämnesord
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Miljövetenskap (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Environmental Sciences (hsv//eng)
Nyckelord
- Enviromental Science
- Miljövetenskap
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