Distribution and characteristics of radioactivity$(^{232}Th,\;^{226}Ra,\;^{40}K,\;^{137}Cs\;and\;^{90}Sr)$ and radiation in Korea

  • Published : 2005.12.30

Abstract

The concentrations of natural and artificial radionuclides in soil and gamma ray dose rate in air at 233 locations in Korea have been determined. The national mean concentrations of $^{232}Th,\;^{226}Ra,\;^{40}K,\;^{137}Cs\;and\;^{90}Sr$ in soil were $60{\pm}31,\;33{\pm}14,\;673{\pm}238,\;35{\pm}9.3\;and\;5.0{\pm}3.4\;Bq\;kg^{-1}$, respectively. The mean gamma-ray dose rate at 1 m above the ground was $7918\;nGy\;h^{-1}$. $^{137}Cs$ concentration had highly significant correlation with organic matter content and cation exchange capacity. $^{90}Sr$ concentration had slightly coherent with pH. The results have been compared with other global radioactivity and radiation measurements.

References

  1. KINS, A study on the distribution of g-radionuclides in Korean soils, Korea Institute of Nuclear Safety Report, KINS-AR-241(1994)
  2. Z. Pan, Y.Yang and M. Guo, Natural radiation and radioactivity in China, Radiation Protection Dosimetry 24, 29-38(1988) https://doi.org/10.1093/oxfordjournals.rpd.a080236
  3. K.H. Kim, J.Y. Yun, and S.H. Yoo, Distribution of Cs-137 and K-40 in Korean soils, The Journal of Korean Society of Soil Science and Fertilizer. 28(1), 33-40(1995)
  4. C.S. Kim, M.H. Lee, C.K. Kim and K.H. Kim, $^{137}Cs,\;^{90}Sr,\;^{239+240}Pu$ and $^{238}Pu$ concentrations in surface soils of Korea, Journal Environmental Radioactivity 40, 75-88(1998) https://doi.org/10.1016/S0265-931X(97)00062-3
  5. S.W. Choi, H.G. Jin, C.S. Kim, J.W. Row, C.K. Kim and B.H. Rho, The Distribution of $^{137}Cs,\;^{90}Sr$ and Pu isotopes in the coastal sediment of Korea, J. Korean Association for Radiation Protection 27, 101-110(2002)
  6. H.L. Volchok and de Plaugue, G., EML Produce Manual, 26th ed., HASL-300, Environmental Measurements Laboratory, U.S. Dept. of Energy, New York(1983)
  7. E.O. McLean, Soil pH and lime requirement, in: Methods of soil Analysis, A.E. Page, eds., 2nd ed., pp 199-224, Agronomy Press(1982)
  8. D.W. Nelson and L.E. Sommers, Total carbon and organic matter, in: Methods of soil Analysis, A.E. Page, eds., 2nd ed., pp 539-579, Agronomy Press(1982)
  9. G.W. Thomas, Excahangeable Cations, in: Methods of soil Analysis, A.E. Page, eds., 2nd ed., pp 159-166, Agronomy Press(1982)
  10. L.S. Quinds, P.L. Fernandez, J. Soto and J. Gomez, Natural radioactivity in Spanish soils. Heath Physics 66(2), 194-200(1994) https://doi.org/10.1097/00004032-199402000-00010
  11. K.N. Yu, Z.J. Guan, M.M. Stokes and E.C.M. Young, The assessment of the natural radiation dose committed to the Hong Kong people, Journal Environmental Radioactivity 17, 31-48(1992) https://doi.org/10.1016/0265-931X(92)90033-P
  12. United Nations Scientific Committee on the Effect of Atomic Radiation UNSCEAR 2000 Report, Sources and Effects of Ionizing Radiation, United Nations, New York(2000)
  13. S. Klemola, E. Iius, K. L. Sjoblom, H. Arvela and L. Blomqvist, Monitoring of radionuclides in the environs of the Finnish nuclear power stations in 1988. STUK-A92, Supplement 3 to Annual Report STUK-A 89, Helsinki, Finland(1991)
  14. NIRS, Radioactivity Survey Data in Japan, National Institute of Radiological Sciences Report, NIRS-RSD-102, Chiba, Japan(1994)
  15. W. Schimmack, K. Bunzl, K. Kreutzer and R. Schierl, Effects of acid irrigation and liming on the migration of radiocaesium in a forest soil as observed by field measurements, Science of Total Environment, 101, 181-189 (1991) https://doi.org/10.1016/0048-9697(91)90032-A
  16. T. Tamura, Selection sorption reaction of caesium with mineral soils, Nucl. Saf. 5, 262-268(1964)