Speciation of iodine (I-127 and I-129) in lake sediments

E. Englund, A. Aldahan, Xiaolin Hou, Roongrat Petersen, G. Possnert

    Research output: Contribution to journalConference articleResearchpeer-review

    Abstract

    Fallout of anthropogenic 129I 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 129I in varved lake sediments, collected in central Sweden and cover the period 1941–2007. Using a sequential extraction method, the results of 129I and 127I indicate that the partitioning of the two isotopes were more or less similar, despite the large gradient of 129I 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.
    Original languageEnglish
    JournalNuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
    Volume268
    Issue number7-8
    Pages (from-to)1102-1105
    ISSN0168-583X
    DOIs
    Publication statusPublished - 2010
    Event11th International Conference on Accelerator Mass Spectrometry - Rome, Italy
    Duration: 14 Sept 200819 Sept 2008
    Conference number: 11

    Conference

    Conference11th International Conference on Accelerator Mass Spectrometry
    Number11
    Country/TerritoryItaly
    CityRome
    Period14/09/200819/09/2008

    Keywords

    • Radiation research and nuclear technologies
    • Radioecology and tracers

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