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- W2051209081 abstract "Abstract The occurrence of 238 Pu, 239(40) Pu, 241 Am, 90 Sr and 137 Cs in the region of Nassfeld (Salzburg, Austria) is discussed at four different locations by evaluating a depth profile for each radionuclide. Furthermore, the plutonium separated from the soil samples was measured by Accelerator Mass Spectrometry (AMS) to get information on the isotope ratio 240 Pu/ 239 Pu. The radiochemical procedure consisted of a Pu separation step from Am and Sr by anion exchange in 8 M HNO 3 after oxidation state adjustment to Pu(IV). Am and Sr were coprecipitated with calcium oxalate. Am was separated from Sr by extraction chromatography using TRU-resin. The Sr separation was performed also by extraction chromatography using Sr-resin; after coprecipitation as oxalate, 90 Sr was measured in a gas proportional counter. For the determination of 239(40) Pu and 241 Am by α-spectrometry thin sources were prepared by microprecipitation with NdF 3 . With the respective Pu isotope ratios, it was possible to identify the global fallout as source of the contamination. This was confirmed by the ratio 241 Am/ 239(40) Pu. From the activity ratio 90 Sr/ 137 Cs, it could be shown that most of these radionuclides stem from the reactor accident in Chernobyl." @default.
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- W2051209081 date "2008-11-01" @default.
- W2051209081 modified "2023-09-23" @default.
- W2051209081 title "Vertical distribution of <sup>238</sup>Pu, <sup>239(40)</sup>Pu, <sup>241</sup>Am, <sup>90</sup>Sr and <sup>137</sup>Cs in Austrian soil profiles" @default.
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- W2051209081 doi "https://doi.org/10.1524/ract.2008.1559" @default.
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