| NUKLEONIKA 2008, 53(1):17-25
PLUTONIUM AND GAMMA EMITTERS IN THE NORTHEASTERN PART
OF BORY TUCHOLSKIE (POLAND)
Jerzy W. Mietelski, Sabina Mirocha, Joanna Bogacz
Laboratory of Environmental Radioactivity, Department of Nuclear Physical Chemistry,
The Henryk Niewodniczański Institute
of Nuclear Physics, Polish Academy of Sciences,
152 Radzikowskiego Str., 31-342 Kraków, Poland
The paper presents results of the measurements of Pu and gamma emitters of some forest litter/soil profiles collected in 1999 in the northeastern part of Bory Tucholskie forest (northern Poland). Besides the activity concentration of 137Cs, 134Cs, 40K, 228Ac, 238Pu, 239+240Pu, the cumulated deposition of 137Cs, 238Pu and 239+240Pu were calculated. The origin of these radionuclides is discussed on the basis of the observed activity ratios. The observed average level of radioactive contamination confirms expectations for this region, however samples show a relatively large variation of cumulated deposition for both plutonium and radiocesium originated from global and Chernobyl fallout.
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