Radionuclide analysis of environmental field trial samples at STUK /II. Second report on task FIN A 847 of the Finnish support programme to IAEA safeguards

摘要

Radionuclide determinations of 35 environmental samples of eight different materials were carried out for the International Atomic Energy Agency by the Finnish Centre for Radiation and Nuclear Safety (STUK). All the samples were analysed for gamma emitting nuclides, (sup 90)Sr, (sup 238)Pu and (sup 239),(sup 240)Pu. In most of the samples the found radionuclide contents were roughly at the same levels as in the same types of environmental samples in the northern hemisphere. However, some samples of grass, moss, lichen and sheep faeces showed exceptionally great contents of radionuclides measured. The maximum contents of (sup 90)Sr, (sup 137)Cs, (sup 238)Pu and (sup 239),(sup 240)Pu were found in the sam individual samples. The ratios of nuclide concentrations in these samples also deviated from ratios in other samples. This referred to an origin of these nuclides other than the global fallout. The work was a continuation to the study carried out under the Task FIN A 847 of the Finnish Support Programme to IAEA Safeguard. (orig.) (1 ref., 1 fig., 4 tabs.). (Atomindex citation 27:002927)