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|Title:||Vertical Distribution of 238Pu, 239(40)Pu, 241Am, 90Sr and 137Cs in Austrian Soil Profiles|
|Authors:||SRNCIK M.; HRNECEK Erich; STEIER P.; WALLNER A.; WALLNER G.; BOSSEW Peter|
|Citation:||RADIOCHIMICA ACTA vol. 96 p. 733-738|
|Type:||Articles in periodicals and books|
|Abstract:||The occurrence of 238Pu, 239(40)Pu, 241Am, 90Sr and 137Cs 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 240Pu/239Pu. The radiochemical procedure consisted of a Pu separation step from Am and Sr by anion exchange in 8M HNO3 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, 90Sr was measured in a gas proportional counter. For the determination of 239(40)Pu and 241Am by a-spectrometry thin sources were prepared by microprecipitation with NdF3.|
|JRC Institute:||Nuclear Safety and Security|
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