Speciation analysis of 129I in seawater using coprecipitation and accelerator mass spectrometry and its applications

Shan Xing, Xiaolin Hou, Ala Aldahan, Göran Possnert

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    Abstract

    Speciation analysis of long-lived 129I in seawater can provide useful information on the source of water masses. This paper presents an improved method for speciation analysis of 129I based on coprecipitation of iodide as AgI with Ag2SO3 and AgCl. By adding a small amount of 127I carrier, the separation efficiency of iodine species and the accuracy and precision of 129I measurement are remarkably improved. 129I species in depth profiles of seawater from the Antarctic were analyzed for investigation of water circulation in the Antarctic.
    Original languageEnglish
    JournalJournal of Radioanalytical and Nuclear Chemistry
    Volume311
    Issue number1
    Pages (from-to)833–841
    Number of pages9
    ISSN0236-5731
    DOIs
    Publication statusPublished - 2017

    Keywords

    • 129I
    • Accelerator mass spectrometry
    • Seawater
    • Speciation analysis

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