WJNST  Vol.4 No.2 , April 2014
Transference Kinetics of Radionuclide 95Nb in the Aquatic Ecosystem

The dynamics of transportation, accumulation, diminishment and distribution of 95Nb in a simulated aquatic ecosystem was studied using the isotope-tracer technique, and a fitting equation was established by application of a closed, five-compartment model. The results showed that when 95Nb was introduced into an aquatic system, it was transported and transformed via deposition in combination with other ions, and adsorption and absorption by aquatic organisms, resulting in redistribution and accumulation in different parts of the organisms. Following addition, the spe- cific activity of 95Nb in water decreased sharply within a short time, and then after reaching a certain value, it decreased more slowly. Sediment accumulated large amounts of 95Nb through the exchange of ions. Hyacinth (Eichhornia crassipes) also adsorbed a large amount of 95Nb in a short period of time. Snails (Bellamya purificata) and fish (Carassius auratus) were found to have a poor adsorption capacity of 95Nb. The amount of 95Nb found in the snail flesh was greater than that in the shell, and the 95Nb found in the fish was mainly distributed in the viscera. The amount of 95Nb in each individual component of the experimental system was affected over time.

Cite this paper
Zhao, X. , Huang, L. , Cai, Z. and Wang, S. (2014) Transference Kinetics of Radionuclide 95Nb in the Aquatic Ecosystem. World Journal of Nuclear Science and Technology, 4, 88-95. doi: 10.4236/wjnst.2014.42014.
[1]   Whicker, F.W. and Schultz, V. (1982) Radioecology: Nuclear Energy and the Environment. CRC Press, Boca Raton.

[2]   Echevarria, G., Morel, J.L. and Leclerc-Cessac, E. (2005) Retention and Phytoavailability of Radioniobium in Soils. Journal of Environmental Radioactivity, 78, 343-352. http://dx.doi.org/10.1016/j.jenvrad.2004.05.010

[3]   Szabolcs, O., Nora, V. andZsuzsa, M. (2008) Determination of Long-Lived Nb Isotopes in Nuclear Power Plant Wastes. Applied Radiation and Isotopes, 66, 24-27. http://dx.doi.org/10.1016/j.apradiso.2007.07.007

[4]   Arvic, H., Lena, J. and Desmond, M. (2009) Decay Correction of 95Nb. Applied Radiation and Isotopes, 67, 641-642.

[5]   Yirchenko, Y.P. and Agapkina, G.I. (1993) Organic Radionuclide Compounds in Soils Surrounding the Chernobyl Nuclear Power Plant. Eurasian Soil Science, 25, 51-59.

[6]   Kruglov, S.V., Vasil’yeva, N.A., Kurinov, A.D., et al. (1996) Distribution of Radionuclides from Chernobyl Fallout with Regard to Fractions of the Soil-Particle Distribution of Sod-Podzolic Soils. Eurasian Soil Science, 28, 26-35.

[7]   Zhu, N.K., Wang, C.L. and Teng, W.F. (2004) Status of Radiation Sterilization of Healthcare Products in China. Radiation Physics and Chemistry, 71, 591-595. http://dx.doi.org/10.1016/j.radphyschem.2004.03.036

[8]   Chen, S.C. (1994) Important Inorganic Chemical Reactions. 3rd Edition, Shanghai Science & Technology Press, Shanghai.

[9]   Shi, J.J. and Guo, J.F. (2006) Distribution and Migration of 95Zr in a Tea Plant/Soil System. Journal of Environmental Radioactivity, 87, 170-174. http://dx.doi.org/10.1016/j.jenvrad.2005.11.007

[10]   Zhang, X.D. (1995) Applied Regression Analysis. Zhejiang University Press, Hangzhou.

[11]   Xiong, Y. (1990) Soil Colloid-Volume 3: The Property of the Soil Colloid. Science Press, Beijing.

[12]   Wang, Y. (1995) Soil Environment Element Chemistry. Chinese Environment Science Press, Beijing.

[13]   Echevarria, G., Morel, J.L. and Leclerc-Cessac, E. (2005) Retention and Phytoavailability of Radioniobium in Soils. Journal of Environmental Radioactivity, 78, 343-352. http://dx.doi.org/10.1016/j.jenvrad.2004.05.010

[14]   Shi, J.J., Guo, J.F. and Chen, H. (2003) Distribution and Migration of 95Zr in Marine Ecosystem. Water, Air and Soil Pollution, 149, 177-187. http://dx.doi.org/10.1023/A:1025679921911

[15]   Mosulishvili, L.M., Shoniya, N.I., Katamadze, N.M., et al. (1994) Environmental Radionuclide Distribution in the Republic of Georgia after the Chernobyl Catastrophe. Zhurnal Analiticheskoi Khimii, 49, 135-139.

[16]   Liu, L.L., Shi, J.J., Zhao, X.Y., et al. (2005) Dynamics of Transfer and Distribution of 95Zr in the Broadbean-Soil Ecosystem. Journal of Environmental Radioactivity, 80, 217-223. http://dx.doi.org/10.1016/j.jenvrad.2004.09.001

[17]   Shi, J.J., Guo, J.F. and Chen, H. (2002) Dynamics of 95Zr in the Rice/Water/Soil System. Applied Radiation and Isotopes, 56, 735-740. http://dx.doi.org/10.1016/S0969-8043(01)00257-3

[18]   Zhao, X.Y., Cai, Z.Q., Gong, F.H., et al. (2008) Transference Kinetics of 60Co in an Aquatic-Terrestrial Ecosystem. Nuclear Science and Techniques, 19, 213-217. http://dx.doi.org/10.1016/S1001-8042(08)60052-4

[19]   Michael, A.S., Ingvar, L.L. and Audeen, W.F. (2008) Fate of 60Co at a Sludge Land Application Site. Journal of Environmental Radioactivity, 99, 1611-1616. http://dx.doi.org/10.1016/j.jenvrad.2008.06.006

[20]   Kirchner, G.J. (1998) Applicability of Compartmental Models for Simulating the Transport to Radionuclides in Soil. Journal of Environmental Radioactivity, 38, 339-352. http://dx.doi.org/10.1016/S0265-931X(97)00035-0