Journal of Nuclear Fuel Cycle and Waste Technology

한국방사성폐기물학회 (Korean Radioactive Waste Society)
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Transport Parameters of 99Tc, 137Cs, 90Sr, and 239+240Pu for Soils in Korea

  • Keum, D.K. (Korea Atomic Energy Research Institute) ;
  • Kim, B.H. (Korea Atomic Energy Research Institute) ;
  • Jun, I. (Korea Atomic Energy Research Institute) ;
  • Lim, K.M. (Korea Atomic Energy Research Institute) ;
  • Choi, Y.H. (Korea Atomic Energy Research Institute)
  • 투고 : 2013.07.15
  • 심사 : 2013.08.09
  • 발행 : 2013.10.30
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초록

To characterize quantitatively the transport of $^{99}Tc$ and the global fallout ($^{137}Cs$, $^{90}Sr$, and $^{239+240}Pu$) for soils in Korea, the transport parameters of a convective-dispersion model, apparent migration velocity, and apparent dispersion coefficient were estimated from the vertical depth profiles of the radionuclides in soils. The vertical profiles of $^{99}Tc$ were measured from a pot experiment for paddy soil that had been sampled from a rice-field around the Gyeongju radioactive waste repository in Korea, and the vertical depth distributions of the global fallout $^{137}Cs$, $^{90}Sr$, and $^{239+240}Pu$ were measured from the soil samples that were taken from local areas in Korea. The front edge of the $^{99}Tc$ profiles reached a depth of about 12 cm in 138 days, indicating a faster movement than the fallout radionuclides. A weak adsorption of $^{99}Tc$ on the soil particles by the formation of Tc(VII) and a high water infiltration velocity seemed to have controlled the migration of $^{99}Tc$. The apparent migration velocity and dispersion coefficient of $^{99}Tc$ for the disturbed paddy soil were 2.88 cm/y and 6.3 $cm^2/y$, respectively. The majority of the global fallout $^{137}Cs$, $^{90}Sr$, and $^{239+240}Pu$ were found in the top 20 cm of the soils even after a transport of about 30 years. The transport parameters for the global fallout radionuclides were 0.01-0.1cm/y ($^{137}Cs$), 0.09-0.13cm/y ($^{90}Sr$), and 0.09-0.18cm/y ($^{239+240}Pu$) for the apparent migration velocity: 0.21-1.09 $cm^2/y$ ($^{137}Cs$), 0.12-0.7$cm^2/y$ ($^{90}Sr$), and 0.09-0.36$cm^2/y$ ($^{239+240}Pu$) for the apparent dispersion coefficient.

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참고문헌

  1. Ivanoc, Y.A., Lewyckyj, N., Levchuk, S.E., Prister, B.S., Firsakova, S.K., Arkhipov, N.P., Arkhipov, A.N., Kruglov, S.V., Alexakhin, R.M., Sandalls, J., Askbrant and S., "Migration of $^{137}Cs\;and\;^{90}Sr# from Chernobyl fallout in Ukrainian, Belarussian and Russian soils," J. Environmental Radioactivity, 35(1), pp.1-21 (1997) https://doi.org/10.1016/S0265-931X(96)00036-7
  2. Kirchner, G., "Modeling the migration of fallout radionuclides in soil using a transfer function model," Health Physics, 74(1), pp.78-85, (1998) https://doi.org/10.1097/00004032-199801000-00009
  3. Bossew, P. and Kirchner, G.., "Modeling the vertical distribution of radionuclides in soil. Part I: the convection-dispersion equation revisited," J. Environmental Radioactivity, 73, pp.127-150, (2004) https://doi.org/10.1016/j.jenvrad.2003.08.006
  4. Shinonaga, T., Schimmack, W., Gerzabek and M.H., "Vertical migration of $^{60}Co,\;^{137}Cs\;and\;^{226}Ra$ in agricultural soils as observed in lysimeters under crop rotation," J. Environmental Radioactivity, 79, pp.93-106, (2005) https://doi.org/10.1016/j.jenvrad.2004.05.018
  5. McClellan, Y., August, R.A., Gosz, J.R., Gann, S., Parameter and R.R., Windsor, M., "Vertical distribution, migration rats, and model comparison of actinium in a semi-arid environment," J. Environmental Radioactivity, 86, pp.199-211, (2006) https://doi.org/10.1016/j.jenvrad.2005.08.007
  6. Solovitch-Vella, N., Pourcelot, L., Chen, V.T., Froidevaux, P., Gauthier-Lafaye, F., Stille and P., Aubert, D., "Comparative migration behavior of $^{90}Sr,\;^{239+240}Pu\;and\;^{241}Am$ in mineral and organic soils of France," Applied Geochemistry, 22, pp.2526-2535, (2007) https://doi.org/10.1016/j.apgeochem.2007.07.003
  7. Lee, M.H., Lee, C.W., Hong, K.H., Choi, Y.H. and Boo, B.H., "Depth distribution of $^{239,240}Pu\;and\;^{137}Cs$ in soils of South Korea," J. Radioanalytical and Nuclear Chemistry, 204(1), pp.135-144, (1996) https://doi.org/10.1007/BF02060874
  8. Lee, M.H., Lee, C.W. and Boo, B.H., "Distribution and Characteristics of $^{239,240}Pu\;and\;^{137}Cs$ in the Soil of Korea," J. Environmental Radioactivity, 37(1), pp.1-16, (1997) https://doi.org/10.1016/S0265-931X(96)00080-X
  9. Lee, M.H., Choi, Y.H., Shin, H.S., Kim, S.B. and Lee, C.W., "Cumulative deposition of $^{137}Cs$ in the soils of Korea," J. the Korean Association for Radiation Protection, 23(2), pp.97-102, (1998)
  10. Lee, M.H. and Lee, C.W., "Determination of $^{137}Cs,\;^{90}Sr$ and fallout Pu in the volcanic soil of Korea," J. Radioanalytical and Nuclear Chemistry, 239(3), pp.471-476, (1999) https://doi.org/10.1007/BF02349053
  11. Lee, M.H. and Lee, C.W., "Association of fallout-derived $^{137}Cs,\;^{90}Sr\;and\;^{239,240}Pu$ with natural organic substances in soils, J. Environmental Radioactivity, 47, pp.253-262, (2000) https://doi.org/10.1016/S0265-931X(99)00033-8
  12. Cha, H.J., Park, D., Park, H., Kang, M.J., Lee, C.W., Choi, G..S., Choi, Y.H., Chung, K.H., Lee, H.P., Shin, H.S. and Lee, C.W., "Vertical distribution of $^{137}Cs\;and\;^{90}Sr$ activities in the soils of Korea," J. the Korean Association for Radiation Protection, 29(3), pp.197-204, (2004)
  13. Cha, H.J., Kang, H., Chung, K.H., Choi, G.S. and Lee, C.W., "Accumulation of $^{137}Cs$ in soils on different bedrock geology and textures," J. Radioanalytical and Nuclear Chemistry, 267(2), pp.349-355, (2006) https://doi.org/10.1007/s10967-006-0054-4
  14. Kreft, A. and Zuber, A., "On the Physical meaning of the dispersion equation and its solutions for different initial and boundary conditions," Chemical Engineering Science, 33, pp.1471-1480, (1978) https://doi.org/10.1016/0009-2509(78)85196-3
  15. Parker, J.C. and van Genuchten, M.T., "Flux- averaged and volume-averaged concentrations in continuum approaches to solute transport," Water Resources Research, 20(7), pp.866-872, (1984) https://doi.org/10.1029/WR020i007p00866
  16. Kuster, J.L. and Mize, J.H., Optimization techniques with Fortran. McGraw-Hill Inc., New York, USA, (1973)
  17. Keum, D.K., Lee, H.S., Choi, H.J., Kang, H.S., Lim, K.M., Choi, Y.H. and Lee, C.W., "A dynamic compartment model for assessing the transfer of radionuclide deposited onto flooded rice-fields," J. of Environmental Radioactivity, 76, pp.349-367, (2004) https://doi.org/10.1016/j.jenvrad.2004.02.001
  18. Tagami, K. and Uchida, S., "Global fallout Tc-99 distribution and behavior in Japanese soils," J. of Nuclear and Radiochemical Sciences, 3(2), pp.1-5, (2002)
  19. Lieser, K.H. and Bauscher, C., "Technetium in the hydrosphere and in the Geosphere," Radiochim. Acta, 42, pp.205-213, (1987)
  20. Ishi, N. and Uchida, S., "Gram-negative bacteria responsible for insoluble technetium formation and the fate of insoluble Tc in the water column above flooded paddy soil," Chemosphere, 60, pp.157-163, (2005) https://doi.org/10.1016/j.chemosphere.2004.12.070
  21. Tagami, K. and Uchida, S., "Microbial role in immobilization of technetium in soil under water-logged conditions," Chemosphere, 23(2), pp.217-225, (1996)
  22. Boggs, S., Livermore and D. Seitz, M.G., Humic substances in natural waters and their complexation with trace metals and radionuclides. Argonne National Laboratory Report ANL pp.84-78, (1985)
  23. Kim, J.I., Chemical behavior of transuranic elements in natural aquatic system, In Handbook on the Physics and Chemistry of the Actinides. ed., A.J. Freeman and Keller, North Holland, Amsterdam, pp.413-56, (1986)
  24. IAEA, Handbook of parameter values for the prediction of radionuclide transfer in temperate environments. TRS 364, International Atomic Energy Agency, Vienna, Austria, (1994)

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