Progress on 129I analysis and its application in environmental and geological researches

Yukun Fan, Xiaolin Hou, Weijian Zhou

    Research output: Contribution to journalJournal articleResearchpeer-review

    Abstract

    Iodine-129 is a naturally generated isotope, but anthropogenic releases are the dominated source of 129I in the present environment. Among many measurement techniques, neutron activation analysis (NAA) and accelerator mass spectrometry (AMS) are only methods used for measurement of 129I in environmental level. Based on its source terms, chemical properties and environmental behaviors, 129Ican be applied for geological dating in a range of 2–80Ma, investigation of formation and migration of hydrocarbon, circulation of ocean water, atmospheric process of iodine, as well as reconstruction of dispersion and migration of short-lived radioisotopes of iodine released from nuclear accidents. This article aims to summarize and critically compare the analytical techniques used for 129I measurement and chemical methods for separation of iodine from various sample matrices, purification from the interferences, as well as preparation of suitable target for AMS measurement. The major applications in environmental and geological researches are reviewed, which mainly focus on the new progress and potential development in the future. The application of 129I in the investigation of radioactive contamination from the Fukushima accident is discussed.

    Original languageEnglish
    JournalDesalination
    Volume321
    Pages (from-to)32-46
    ISSN0011-9164
    DOIs
    Publication statusPublished - 2013

    Keywords

    • Iodine-129
    • Environmental tracer
    • Nuclear accident
    • Circulation of ocean water
    • Atmospheric process of iodine
    • Speciation of iodine

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