Isotopic composition of plutonium in the bottom deposits of the Norwegian Sea and Greenland Sea and identification of the sources of contaminationhearder

Autor: A. V. Stepanov, Ola M. Johannessen, O. S. Tsvetkov, B. N. Belyaev, V. D. Domkin, Viktor P. Tishkov, L. M. Ivanova, A. A. Osokina, K. L. Bobylev, V. S. Plekhov
Rok vydání: 1999
Předmět:
Zdroj: Atomic Energy. 87:745-752
ISSN: 1573-8205
1063-4258
Popis: The results of measurements of the isotopic atomic ratios238Pu/239Pu,240Pu/239Pu,241Pu/239Pu,242Pu/239Pu in samples of bottom deposits are presented. The role of the main sources of plutonium contamination of the region is examined. It is shown that the contribution of the α activity of industrial plutonium (238–240Pu) in bottom sediments from the European reprocessing plants, mainly, Sellafield (Great Britain), on the background due to global fallouts is 20 to 55% of the total α activity and 70–95% for the β activity (241Pu). No escape of reactor and weapons plutonium from the nuclear powered submarine “Komsomolets” into the environment was observed. The lower limit of sensitivity of the method is 10−14g of plutonium in a sample, which corresponds to a plutonium α activity of 0.02 mBq in a 10 g sample of bottom deposits, 4 tables, 26 references.
Databáze: OpenAIRE
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