Radioactivity Levels in Some Mushroom Species and Consequent Doses

摘要

The radioactivity concentrations of natural radionuclides ~(232)Th, ~(40)K, ~(238)U, have been determined for various mushroom samples collected from black sea region in Ordu and Kastomonu provinces of Turkey. Nal (Tl) γ-scintillation counter is used for radioisotope concentration measurements. The radionuclide activity concentrations of ~(232)Th, ~(40)K, ~(238)U in the mushroom species were found to be ranging from 0.354 to 5.43, 4.37 to 90.9,1.03 to 8.45 Bq/kg, respectively. Annual effective doses for ingestion of edible mushrooms were calculated and it is shown that exposure is mainly due to ~(252)Th natural radionuclides. The mean annual effective dose due to the intake of mushrooms was found to be 1.13 × 10~(-0.4)mSv.