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129I concentrations in surface and deep seawater from the Irish Sea and the Atlantic Ocean

AuthorsLópez-Gutiérrez, J. M. ; Peruchena, J. I.
Issue Date2013
CitationGoldschmidt 2013
AbstractIn this work, 129I concentrations in seawater samples from the Irish coast and from the Extended Ellet Line (from Scotland to Iceland) are presented, including both surface samples as well as two depth profiles at the Atlantic Ocean. The results aim to increase and update the information on the presence of this radionuclide in the Atlantic waters. Surface water 129I along the Irish coast, directly affected by Sellafield discharges, is 3.2 + 1010 at./kg in average Measured 129I concentrations along the EEL are typically in the order of 108 at/kg, slightly over the results obtained by Alfimov et al. in waters sampled nearby in 1999. Also, our results are about one order of magnitude lower than those previously found in the Irminger Basin and in the Arctic Oceans. The two EEL depth profiles show different shapes. Profile 1 decreases with depth, due to dilution. However, profile 2 shows the highest 129I levels in the deepest waters. The North Atlantic Deep Waters current from the Arctic Ocean Profile and enriched in 129I was probably sampled in Profile 2.
DescriptionResumen del póster presentado a la conferencia "goldschmidt" celebrada en Florencia (Italia) del 25 al 30 de agosto de 2013.-- et al.
Appears in Collections:(CNA) Comunicaciones congresos
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