Results of (90)Sr and (239+240)Pu, (238)Pu, (241)Am measurements in some samples of mushrooms and forest soil from Poland

摘要

Strontium-90, plutonium and americium activity concentrations in a few samples of forest soils, some species of mushrooms and fern leaves were determined. These results are compared with caesium activity concentrations in the same materials obtained in a previous work. Radiochemical procedures are described. The origin of the contamination (Chernobyl accident or nuclear test explosion release) is discussed. The (sup 90)Sr activity concentration ranges from 0.6 Bq/kg (mushroom samples) to 48.4 Bq/kg (fern leaves). For (sup 239+240)Pu, it ranges from not detected above background (mushrooms, fern) to 10.8 Bq/kg (humus layer of forest soil). The maximum concentration of (sup 241)Am is found to be 2.4 Bq/kg (humus sample) and for (sup 238)Pu it is 0.85 Bq/kg (also in the humus sample). (author). 12 refs, 9 figs, 7 tabs. (Atomindex citation 26:005586)