1/2/2024 0 Comments Ash wood westland survival![]() ![]() A peat-bog is a special example of an ecosystem, which is generally not disturbed by human activities because it is under strict nature-conservation and whose soil structure is not affected by animal activities from moles and earthworms. The peat-bog investigated in this study is situated in Koppl, east of Salzburg. The Province of Salzburg belongs to the regions with the highest contamination from the Chernobyl-fallout outside the former USSR. Radioactive fallout nuclides in a peat-bog ecosystem ![]() Intervention doses were exceeded in a minor selection of samples due to 137 Cs, whereas natural radionuclides contributed very little to the doses. ![]() Radiation exposure from handling and utilisation of peat ash was estimated with activity indices derived from the data for energy peat harvested in 1994. The nuclides of the uranium series in the samples were generally not in radioactive equilibrium, as different environmental processes change their activity ratios in peat. In undisturbed surface layers of a natural bog and peat production bogs the contents of 210 Pb and 210 Po exceeded those of the deeper peat layers. The activity concentrations of natural radionuclides often increased towards the deepest peat bog layers whereas the radioactive caesium deposited from atmosphere was missing in the deep layers. These nuclides potentially contribute to radiation exposure through inhalation when partially released to atmosphere during combustion of peat. The beta and alpha active natural nuclides of lead and polonium ( 210 Pb, 210 Po) were determined on a set of peat samples. Both natural nuclides emitting gamma radiation ( 238 U, 235 U, 232 Th, 226 Ra, 40 K) and radiocaesium ( 137 Cs, 134 Cs) origin in fallout from a nuclear power plant accident (1986) and in atmospheric nuclear weapon tests were analysed. These distributions demonstrate the future change in radioactivity of energy peat. Also thirteen peat bogs used for peat production and one bog in natural condition were analysed for vertical distributions of several radionuclides. The annual harvest of fuel peat in 1994 was studied extensively. The study was aimed at improving the general view on radionuclides contents in energy peat produced in Finland. International Nuclear Information System (INIS) Radionuclides in peat bogs and energy peat ![]()
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