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Speciation of iodine (127I and 129I) in lake sediments
Uppsala University, Disciplinary Domain of Science and Technology, För teknisk-naturvetenskapliga fakulteten gemensamma enheter, Tandem Laboratory.
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, LUVAL.
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2010 (English)In: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, ISSN 0168-583X, E-ISSN 1872-9584, Vol. 268, no 7-8, 1102-1105 p.Article in journal (Refereed) Published
Abstract [en]

Fallout of anthropogenic I-129 at northern Europe has been occurring since the early 1950. Nevertheless, it is still unclear where and how this radioactive iodine is incorporated in the surface environment. In order to elucidate part of this problem, we here present an investigation of the occurrence modes of I-129 in varved lake sediments, collected in central Sweden and cover the period 1941-2007. Using a sequential extraction method, the results of I-129 and I-127 indicate that the partitioning of the two isotopes were more or less similar, despite the large gradient of I-129 within the sediment. Organic bound iodine was the dominant form over other fractions, while iodine bound to metal oxides was negligible. The leachable part constituted 5-6% of the iodine. Diagenetic influence seems to exert a limited effect on distribution of iodine in the examined sediment section.

Place, publisher, year, edition, pages
2010. Vol. 268, no 7-8, 1102-1105 p.
Keyword [en]
Iodine-129, Speciation, Sediment, Nuclear reprocessing, Sellafield, La Hague
National Category
Earth and Related Environmental Sciences
Identifiers
URN: urn:nbn:se:uu:diva-136901DOI: 10.1016/j.nimb.2009.10.109ISI: 000277462300104OAI: oai:DiVA.org:uu-136901DiVA: diva2:377596
Available from: 2010-12-14 Created: 2010-12-14 Last updated: 2017-12-11Bibliographically approved

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Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
Earth and Related Environmental Sciences

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