Results of on-site radionuclide measurements in river sediment

Sample ID Weighted average isotopic activity (Bq/kg of dry weight)  

Errors given are 2 standard deviations. The sign indicates less than the minimum detectable concentration, which is given at the 90% confidence level. Sample J7 was taken in the floodplain of the Yenisey River above the junction. The locations of the other samples are given in Table 6.17. 

In samples drawn from the Yenisey River at and upstream of the junction, levels of the neutron activation product60 Co (5.27-year half-life) and of the fission products 137Cs and 152Eu (13.3-year half-life) were much higher than background ranging 

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Table 6.17. Results of on-site radionuclide measurements in river sediment.

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