Americium and curium deposition in Finland from the Chernobyl accident

S. Salminen, J. Paatero, T. Jaakkola, J. Lehto

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    "Am-241 and Cm-244 were analysed from peat samples collected in Finland immediately after the Chernobyl accident. The separation method included co-precipitation, anion exchange and extraction chromatography. Activities of Am-241 and Cm-244 were measured by alpha spectrometry. The activity of Chernobyl-derived Am-241 varied between 0.0115 and 9.32Bq/m(2) and that of Cm-244 from < 0.002 to 1.97 Bq/m(2) (reference date 1.5.1986). The origin of Am-241 in Finland is predominantly from atmospheric nuclear tests. However, the geographical distribution of Chernobyl-americium is uneven and depending on a location even 100% of Am-241 in peat originated from the Chernobyl accident. The deposition pattern of Chernobyl-derived Am-241 and Cm-244 resembles that of other refractory nuclides, such as Zr-95, Ce-141 and (239,240) Pu."
    Original languageEnglish
    JournalRadiochimica Acta
    Issue number12
    Pages (from-to)771-779
    Number of pages9
    Publication statusPublished - 2005
    MoE publication typeA1 Journal article-refereed

    Fields of Science

    • 116 Chemical sciences

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