Americium and curium deposition in Finland from the Chernobyl accident
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Susanna Salminen
Summary
241Am and 244Cm 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 241Am and 244Cm were measured by alpha spectrometry. The activity of Chernobyl-derived 241Am varied between 0.0115 and 9.32 Bq/m2 and that of 244Cm from < 0.002 to 1.97 Bq/m2 (reference date 1.5.1986). The origin of 241Am 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 241Am in peat originated from the Chernobyl accident. The deposition pattern of Chernobyl-derived 241Am and 244Cm resembles that of other refractory nuclides, such as 95Zr, 141Ce and 239,240Pu.
© Oldenbourg Wissenschaftsverlag, München
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- Americium and curium deposition in Finland from the Chernobyl accident
- Determination of uranium concentration and burn-up of irradiated reactor fuel in contaminated areas in Belarus using uranium isotopic ratios in soil samples
Artikel in diesem Heft
- Chemical procedure applied for the identification of Rf/Db produced in the 48Ca +243Am reaction
- Chemical speciation of Am, Cm and Eu with EDTA at high ionic strength: thermodynamics and laser fluorescence spectroscopy studies
- Complexation of Cm(III)/Eu(III) with silicates in basic solutions
- Extraction of americium and europium by CMPO-substituted adamantylcalixarenes
- Plutonium (IV) complexation with citric and alginic acids at low PuT concentrations
- Electrochemical and spectroelectrochemical behaviour of Np(VI) ions in nitric acid solutions
- Americium and curium deposition in Finland from the Chernobyl accident
- Determination of uranium concentration and burn-up of irradiated reactor fuel in contaminated areas in Belarus using uranium isotopic ratios in soil samples
