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Bunzl, K.W. ; Kracke, W. ; Schimmack, W.

Vertical migration of Plutonium-239 + -240, Americium-241 and Caesium-137 fallout in a forest soil under spruce.

Analyst 117 3, 469-474 (1992)
DOI
Open Access Green möglich sobald Postprint bei der ZB eingereicht worden ist.
The vertical activity distributions of fallout 238Pu, 239+240Pu 241 Am, 137Cs and 137Cs in a forest soil (Hapludult) were determined at several locations in a spruce stand separately according to their origin (global fallout or Chernobyl fallout). To determine the rate of migration of these radionuclides in each soil horizon, the observed depth profiles of the radionuclides were evaluated with a compartment model. In the top organic horizons (LOf1 and Of2), the migration rates for all radionuclides from both sources were above 0.5 cm per year. In the Oh horizon the migration rates observed for global fallout Pu, Am and Cs were similar (0.2-0.4 cm per year). Compared with Pu, however, the mobility of Am is slightly, but statistically significantly, enhanced. The highest rate in this layer was found for Chernobyl-derived radiocaesium (2 cm per year). In the layers of the mineral horizon (depth 0-2, 2-5 and 5-10 cm) the observed migration rates were very similar for global fallout Pu (0.08-0.7 cm per year) and Am (0.1-2 cm per year). In comparison, the migration rate of global fallout radiocaesium was about half in each layer. The highest rate was observed again for Chernobyl-derived radiocaesium (0.5-3 cm per year).
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Publikationstyp Artikel: Journalartikel
Dokumenttyp Wissenschaftlicher Artikel
Korrespondenzautor
Schlagwörter Americium ; Forest ; Migration ; Plutonium ; Soil
ISSN (print) / ISBN 0003-2654
e-ISSN 1364-5528
Zeitschrift Analyst, The
Quellenangaben Band: 117 3, Heft: , Seiten: 469-474 Artikelnummer: , Supplement: ,
Verlag Royal Society of Chemistry (RSC)
Nichtpatentliteratur Publikationen
Begutachtungsstatus Peer reviewed
Institut(e) Institute of Radiation Protection (ISS)