Gamma Emitters in Marine Organisms. I. Concentration of Gamma Emitting Nuclides in the Fin Whale

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概要

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• Fin whales from three geographically different regions were examined for accumulated radioactive nuclides by the gamma-ray spectrometric method. The gamma-ray spectra showed prominent peaks for radioactive zinc, manganese and cesium, apart from the naturally occurring radioisotope of potassium. Concentrations of these accumulated radionuclides by tissues and by regions have been compared. Other nuclides noticed in the spectra are ruthenium-103-106, and cerium-141-l44. Specific tissues examined revealed that ^<54>Mn is greatly lodged in the liver and ^<137>Cs in the muscle. The bone showed affinity for ^<65>Zn and ^<137>Cs and less for ^<54>Mn. The Hokkaido bone sample for the same year (1964), however, showed exceptionally high values for ^<54>Mn. The Arctic fin whales showed larger accumulation of the radionuclides than the Antarctic fin whales, confirming heavier contamination of the northern hemisphere waters.

• 日本放射線影響学会の論文

著者

• 桧山 義夫

  Faculty Of Agriculture University Of Tokyo

• SACHITHANANTHAN C.

  Fisheries Department, Faculty of Agriculture, University of Tokyo

• 桧山 義夫

  Fisheries Department, Faculty of Agriculture, University of Tokyo

• Sachithananthan C.

  Fisheries Department Faculty Of Agriculture University Of Tokyo

関連論文

• On the Uptake of ^Zn and the Concentration Factor on Zn in Marine Organisms I. Uptake of ^Zn in Marine Organisms
• Gamma Emitters in Marine Organisms. I. Concentration of Gamma Emitting Nuclides in the Fin Whale
• Japanese Dietary Habits and the Fall-out Problem-II.

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