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

Abstract

Measurements of (129)I carried out on sea ice samples collected in the central Arctic Ocean in 2007 revealed relatively high levels in the range of 100-1400×10(7) at L(-1) that are comparable to levels measured in the surface mixed layer of the ocean at the same time. The (129)I/(127)I ratio in sea ice is much greater than that in the underlying water, indicating that the (129)I 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 (129)I 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.

DOI: 10.1016/j.marpolbul.2014.10.004

Cite this paper

@article{GmezGuzmn2014NewIO, title={New insights on the role of sea ice in intercepting atmospheric pollutants using (129)I.}, author={Jos{\'e} Manuel G{\'o}mez-Guzm{\'a}n and P C{\'a}mara-Mor and Takama Suzuki and Jos{\'e} M L{\'o}pez-Guti{\'e}rrez and Jos{\'e} Luis Mas and Pere Masqu{\'e} and Spencer Moran and John N Smith}, journal={Marine pollution bulletin}, year={2014}, volume={89 1-2}, pages={180-190} }