Abstract
We have examined the uptake of actinide elements Am and, Pu by different species of lichen and moss collected in two locations (Urbino, Central Italy; Alps region, North-east Italy). Plutonium and americium were separated and determined by extraction chromatography, electrodeposition and alpha-spectrometry. This paper summarizes our results with a special emphasis on the vertical profiles of these actinides in two different species of mosses. Several 1–2 cm depth sections were obtained and dated by210Pb method. A typical peak for239,240Pu and241Am was found in the very old moss species (“Sphagnum Compactum”) at a depth corresponding to the period 1960–1970 which was the period characterized by the maximum nuclear weapon tests. In a younger moss species (“Neckeria Crispa”) no peak was observed and the regression curves showed that Am is more mobile than239,240Pu and238Pu.
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Testa, C., Degetto, S., Jia, G. et al. Plutonium and americium concentrations and vertical profiles in some Italian mosses used as bioindicators. J Radioanal Nucl Chem 234, 273–276 (1998). https://doi.org/10.1007/BF02389784
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DOI: https://doi.org/10.1007/BF02389784