Np in peat and lichen in Finland

Np in peat and lichen in Finland

Activity concentrations of Np in peat and lichen samples in Finland were determined and contributions from nuclear weapons testing in 1950--1960s and the Chernobyl accident were estimated. Np was determined with ICP-MS using Np as a tracer. Activity concentrations of Np in peat samples varied betwee...

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Veröffentlicht in:Journal of radioanalytical and nuclear chemistry 2009-09, Vol.281 (3), p.405-413
Hauptverfasser: Salminen, S, Paatero, J, Roos, P, Helariutta, K
Format: Artikel
Sprache:eng
Schlagworte:
Accidents
Deposition
Lichens
Nuclear chemistry
Nuclear weapons
Peat
Plutonium
Tracers
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Zusammenfassung:Activity concentrations of Np in peat and lichen samples in Finland were determined and contributions from nuclear weapons testing in 1950--1960s and the Chernobyl accident were estimated. Np was determined with ICP-MS using Np as a tracer. Activity concentrations of Np in peat samples varied between 1.98 c 0.05 and 14.1 c 0.3 mBq/m. The contribution from the Chernobyl accident to the total Np deposition in peat was 0.1--13%, the Chernobyl-derived fraction of total Np in peat being much lower than the previously determined corresponding Chernobyl-derived fractions of Pu, Pu, Am and Cm.
ISSN:0236-5731
1588-2780
DOI:10.1007/s10967-009-0007-9