MULTITRACER STUDIES ON THE ACCUMULATION OF RADIONUCLIDES IN MUSHROOMS

We used the multitracer technique to study the transfer of several rad ionuclides to two mushroom species. Radionuclides accumulated in the f ruiting bodies of the mushrooms in the order of Rb-83 > Zn-65 > Mn-54 > Na-22 > Se-75 and Sr-85 > Co-60 > Y-88, Rh-102, Ce-139, Pm-143,Pm-14 4, Gd-146,Gd-153 and Lu-173 > Hf-175. The concentration ratio values f or Rb-83, Zn-65 and Mn-54 in the fruiting bodies were more than 10, wh ereas those for Co-60, Y-88, Rh-102, Te-121m, Hf-175 and the rare eart h elements were less than 1. There were major differences in the accum ulations of the alkali elements.