Abstract
The accumulation of 239+240Pu in human tissues in Japan for the last 15 years, since 1962, was determined in order to correlate with possible fluctuations in environmental pollution. The results showed that the cumulative amounts of 239+240Pu found in gonads and bone exhibited a high activity among the several organs analyzed at this point. It is apparent that 239+240Pu has an affinity for these tissues. The relatively high levels of 239+240Pu in the gonads and in the bones as determined by this research warrants additional attention for its possible dangers and, hence, for the necessity of determining the implication of these hazards.
