New insights on the role of sea ice in intercepting atmospheric pollutants using 129I

MARINE POLLUTION BULLETIN

卷:89

Article

Gomez-Guzman, J. M.¹  Camara-Mor, P.^2,3  Suzuki, T.⁴  Lopez-Gutierrez, J. M.^1,5  Masque, P.^2,3,6,7,8,9  Moran, S. B.¹⁰  Smith, J. N.¹¹ 

[1] Ctr Nacl Aceleradores, Seville 41092, Spain

[2] Univ Autonoma Barcelona, Dept Fis, Bellaterra, Spain

[3] Univ Autonoma Barcelona, Inst Ciancia & Tecnol Ambientals, Bellaterra, Spain

[4] Japan Atom Energy Agcy, Res Grp Environm Sci, Tokai, Ibaraki 3191195, Japan

[5] Univ Seville, Escuela Univ Politecn, Dept Fis Aplicada 1, Seville, Spain

[6] Univ Western Australia, Oceans Inst, Crawley, WA 6009, Australia

[7] Univ Western Australia, Sch Phys, Crawley, WA 6009, Australia

[8] Edith Cowan Univ, Sch Nat Sci, Joondalup, WA, Australia

[9] Edith Cowan Univ, Ctr Marine Ecosyst Res, Joondalup, WA, Australia

[10] Univ Rhode Isl, Grad Sch Oceanog, Narragansett, RI 02882 USA

[11] Fisheries & Oceans Canada, Bedford Inst Oceanog, Dartmouth, NS B2Y 4A2, Canada

关键词: AMS;    Iodine-129;    Arctic Ocean;    Sea ice;    Atmospheric deposition;    Reprocessing;   

DOI  :  10.1016/j.marpolbul.2014.10.004

来源: Elsevier

【 摘 要 】

Measurements of I-129 carried out on sea ice samples collected in the central Arctic Ocean in 2007 revealed relatively high levels in the range of 100-1400 x 10(7) at L-1 that are comparable to levels measured in the surface mixed layer of the ocean at the same time. The I-129/I-127 ratio in sea ice is much greater than that in the underlying water, indicating that the I-129 inventory in sea ice cannot be supported by direct uptake from seawater or by iodine volatilization from proximal (nearby) oceanic regimes. Instead, it is proposed that most of the I-129 inventory in the sea ice is derived from direct atmospheric transport from European nuclear fuel reprocessing plants at Sellafield and Cap La Hague. This hypothesis is supported by back trajectory simulations indicating that volume elements of air originating in the Sellafield/La Hague regions would have been present at arctic sampling stations coincident with sampling collection. (C) 2014 Elsevier Ltd. All rights reserved.

【 授权许可】

Free