Distribution of3H,137Cs and239,240Pu in the surface seawater around Korea

  • C. -K. Kim
  • C. -S. Kim
  • J. -Y. Yun
  • K. -H. Kim


The concentrations of3H,137Cs and239,240Pu were determined in surface seawaters collected at 21 sampling stations around Korea from October of 1994 to May of 1995. The results were consistent with the past data observed in the North Pacific. The concentrations of3H and137Cs did not show much difference no matter where the samples were taken. Due to the limited distribution of sampling points, no systematic change in3H and137Cs levels with latitude was observed. On the other hand,239,240Pu concentration in the East Sea (Japan Sea) was somewhat higher than that in the South and the Yellow Seas, although the data on239,240Pu concentration were not enough to explain the reason. The activity ratios of239,240Pu/137Cs in surface seawater ranged from 0.13% to 0.44% with a mean of 0.25±0.08%. The activity ratios were lower than those of the global fall-out level, 1.1%. This result presumably arose from the different behavior of the two radionuclides in seawater.


Japan Physical Chemistry Inorganic Chemistry Radionuclide Sampling Point 
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Copyright information

© Akadémiai Kiadó 1997

Authors and Affiliations

  • C. -K. Kim
    • 1
  • C. -S. Kim
    • 1
  • J. -Y. Yun
    • 1
  • K. -H. Kim
    • 1
  1. 1.Department of Environmental AssessmentKorea Institute of Nuclear SafetyTaejonKorea

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