Vertical distirbution of $^{137}Cs\;and\;^{90}Sr$ activities in the soils of Korea

토양 중 $^{137}Cs$$^{90}Sr$의 깊이별 분포특성

  • Cha, H.J. (Korea Atomic Energy Research Institute) ;
  • Park, D. (Korea Atomic Energy Research Institute) ;
  • Park, H. (Korea Atomic Energy Research Institute) ;
  • Kang, M.J. (Korea Atomic Energy Research Institute) ;
  • Lee, W. (Korea Atomic Energy Research Institute) ;
  • Choi, G.S. (Korea Atomic Energy Research Institute) ;
  • Cho, Y.H. (Korea Atomic Energy Research Institute) ;
  • Chung, K.H. (Korea Atomic Energy Research Institute) ;
  • Lee, H.P. (Korea Atomic Energy Research Institute) ;
  • Shin, H.S. (Seoul National University of Technology) ;
  • Lee, C.W. (Korea Atomic Energy Research Institute)
  • Published : 2004.09.30


Vertical distributions of $^{137}Cs\;and\;^{90}Sr$ activities are studied for the soils of six areas, Korea (Gori, Yeonggwang, Uljin, Weolseong, Goseong and Jeju). The soils from 6 areas are at geographically different locations with the different environmental conditions and parent rook. The activities of $^{137}Cs\;and\;^{90}Sr$ vary N.D.(below detection limit) to 185 Bq/kg and 2.79 - 8.06 Bq/kg, respectively. Activities of $^{137}Cs\;and\;^{90}Sr$ show the highest value at the surface soil and decrease with depth. $^{137}Cs$ activities at the top surface soils are positively correlated with annual precipitation and organic carbon content with little relationship with mean grain size and the clay content. The highest $^{137}Cs$activities are found at the Jeju site, followed by the Goseong site of which soils have much different parent rock and textural properties. Though the activities of $^{137}Cs\;and\;^{90}Sr$ on the basis of dry weight are higher in Jeju soils than in Goseong soils, their inventories are similar in both soils due to their textural differences.


  1. C. Elejalde, M. Herranz, F. Legarda and F. Romero, 'Determination and analysis of distribution coefficients of $^{137}Cs$ in soils from Biscay (Spain),' Environmental Pollution 110: 157-164(2000)
  2. A. Baeza, M. del Rio, A. Jimenez, C. Miro, an J. Paniagua, 'Relative sorption of $^{137}Cs$ and $^{90}Sr$ in soil: Influence of particle size, organic matter content and pH.' Radiochimica Acta,68:138-140(1995)
  3. M.H. Lee, Y.H. Choi, H.S. Shin, S.B. Kim and C.W. Lee. 'Cumulative deposition of $^{137}Cs$ in the soil of Korea.' J. Korean Asso. Radiat. prot. 23(2): 97-102(1998)
  4. M.H. Lee, and C.W. Lee, 'Determination of $^{137}Cs$, $^{90}Sr$ and fallout Pu in the volcanic soil of Korea. J. Radioanal. Nucl. Chem. 239(3): 471-476(1999)
  5. M.H. Lee, C.W. Lee and B.H. Boo, 'Distribution and characteristics of $^{239,240}Pu$ and $^{137}Cs$ in the soil of Korea. J. Environ. Radioactivity 37(1): 1-16(1997)
  6. I. Nikolova, K.J. Johanson and S. Clegg, 'The accumulation of $^{137}Cs$ in the biological compartment of forest soils.' J. Environ. Radioactivity 47: 319-326(2000)
  7. G. Barci-Funel, J. Dalmasso, V.L. Barci and G. Ardisson, 'Study of the transfer of radionuclides in trees at a forest site.' Sci. Total Env. 173/174: 369-373(1995)
  8. K. Bunzl, W. Kracke, W. Schimmack and L. Zelles 'Forms of fallout $^{137}Cs$ and $^{237+240}Pu$ in successive horizons of a forest soil.' J. Env. Radioactivity 39(1), 55-68(1998)
  9. D.W. Oscarson, R.L. Waston and H.G. Miller, 'The interaction of trace levels of cesium with montmorillonittic and illitic clays.' Applied Clay Science 2, 29-39(1987)
  10. C.S. Kim, M.H. Lee, C.K. Kim and K.H. Kim, '$^{90}Sr$,$^{137}Cs$,$^{239+240}Pu$ and $^{238}Pu$ concentrations in surface soils of Korea.' J. Environ. Radioactivity 40(1), 75-88(1998)
  11. Q. He and D.E. Walling, 'Interpreting particle size effects in the adsorption of $^{137}Cs$ and unsupported $^{210}Pb$ by mineral soils and sediments. J. Environ. Radio-activity 30(2): 117-137(1996)
  12. J.K. Cochran, M. Frignanim M. Salamanca, L.G. Belluci and S. Guerzoni, 'Led-210 as a tracer of atmospheric input of heavy metals in the northern Venice Lagoon. Mar. Chem.62: 15-29(1998)