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Perfluoroalkyl Acid...
Perfluoroalkyl Acids in the Atlantic and Canadian Arctic Oceans
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- Benskin, Jonathan P. (författare)
- University of Alberta, Canada
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- Muir, Derek C. G. (författare)
- Environm Canada, Canada
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- Scott, Brian F. (författare)
- Environm Canada, Canada
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- Spencer, Christine (författare)
- Environm Canada, Canada
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- De Silva, Amila O. (författare)
- Environm Canada, Canada
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- Kylin, Henrik (författare)
- Linköpings universitet,Tema vatten i natur och samhälle,Filosofiska fakulteten
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- Martin, Jonathan W. (författare)
- University of Alberta, Canada
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- Morris, Adam (författare)
- University of Guelph, Canada
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- Lohmann, Rainer (författare)
- University of Rhode Isl, RI 02882 USA
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- Tomy, Gregg (författare)
- Department Fisheries and Oceans Canada, Canada
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- Rosenberg, Bruno (författare)
- Department Fisheries and Oceans Canada, Canada
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- Taniyasu, Sachi (författare)
- National Institute Adv Ind Science and Technology, Japan
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- Yamashita, Nobuyoshi (författare)
- National Institute Adv Ind Science and Technology, Japan
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(creator_code:org_t)
- 2012-05-14
- 2012
- Engelska.
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Ingår i: Environmental Science and Technology. - : American Chemical Society. - 0013-936X .- 1520-5851. ; 46:11, s. 5815-5823
- Relaterad länk:
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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
- We report here on the spatial distribution of C-4, C-6, and C-8 perfluoroalkyl sulfonates, C-6-C-14 perfluoroalkyl carboxylates, and perfluorooctanesulfonamide in the Atlantic and Arctic Oceans, including previously unstudied coastal waters of North and South America, and the Canadian Arctic Archipelago. Perfluorooctanoate (PFOA) and perfluorooctanesulfonate (PFOS) were typically the dominant perfluoroalkyl acids (PFAAs) in Atlantic water. In the midnorthwest Atlantic/Gulf Stream, sum PFAA concentrations (Sigma PFAAs) were low (77-190 pg/L) but increased rapidly upon crossing into U.S. coastal water (up to 5800 pg/L near Rhode Island). Sigma PFAAs in the northeast Atlantic were highest north of the Canary Islands (280-980 pg/L) and decreased with latitude. In the South Atlantic, concentrations increased near Rio de la Plata (Argentina/Uruguay; 350-540 pg/L Sigma PFAAs), possibly attributable to insecticides containing N-ethyl perfluorooctanesulfonamide, or proximity to Montevideo and Buenos Aires. In all other southern hemisphere locations, Sigma PFAAs were less than210 pg/L. PFOA/PFOS ratios were typically greater than= 1 in the northern hemisphere, similar to 1 near the equator, and less than= 1 in the southern hemisphere. In the Canadian Arctic, Sigma PFAAs ranged from 40 to 250 pg/L, with perfluoroheptanoate, PFOA, and PFOS among the PFAAs detected at the highest concentrations. PFOA/PFOS ratios (typically greater thangreater than1) decreased from Baffin Bay to the Amundsen Gulf; possibly attributable to increased atmospheric inputs. These data help validate global emissions models and contribute to understanding of long-range transport pathways and sources of PFAAs to remote regions.
Ämnesord
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Miljövetenskap (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Environmental Sciences (hsv//eng)
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Oceanografi, hydrologi och vattenresurser (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Oceanography, Hydrology and Water Resources (hsv//eng)
- NATURVETENSKAP -- Kemi -- Analytisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Analytical Chemistry (hsv//eng)
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- SOCIAL SCIENCES
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Benskin, Jonatha ...
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Muir, Derek C. G ...
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Scott, Brian F.
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Spencer, Christi ...
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De Silva, Amila ...
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Kylin, Henrik
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Martin, Jonathan ...
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Morris, Adam
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Lohmann, Rainer
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Tomy, Gregg
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Rosenberg, Bruno
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Taniyasu, Sachi
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Yamashita, Nobuy ...
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