Nuclear Physics and Atomic Energy

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Nuclear Physics and Atomic Energy

  ISSN: 1818-331X (Print), 2074-0565 (Online)
  Publisher: Institute for Nuclear Research of the National Academy of Sciences of Ukraine
  Languages: Ukrainian, English, Russian
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Nucl. Phys. At. Energy 2015, volume 16, issue 2, pages 183-192.
Section: Radiobiology and Radioecology.
Received: 25.02.2015; Accepted: 11.06.2015; Published online: 20.07.2015.
PDF Full Text (ru)
https://doi.org/10.15407/jnpae2015.02.183

90Sr and 137Cs content in a wood along the southern fuel trace of Chernobyl radioactive fallout

L. M. Otreshko*, M. A. Zhurba, A. M. Bilous, L. V. Yoschenko

Ukrainian Institute of Agricultural Radiology, National University of Life and Environmental Sciences of Ukraine, Chabany, Kyiv region, Ukraine

*Corresponding author. E-mail address: otreshkol@ukr.net

Abstract: 90Sr and 137Cs content in soil and unplanted wood of small size has been measured along the southern fuel trace of Chernobyl fallout, in Ivankov region of Kiev Oblast during 2012 - 2013. At present, due to biogenic and vertical 90Sr migration in soil of forests, content of 90Sr was reduced by 67 ± 18 % on average in 20-cm rooting-layer, containing less than 0.25 mg-eq of exchangeable calcium per 100 g of soil. Therefore, contamination of fuel wood with 90Sr today is depended weakly on exchangeable calcium content in soil (up to 1 mg-eq/100 g), considering the equal levels of the initial soil contamination with 90Sr. Values of 90Sr transfer factor (TF) to unplanted wood of deciduous trees and pine mounted to 34 ± 20 and 61 ± 56 (Bq/kg)/(kBq/m2), on average, that is in dozens exceeded the values, recommended by IAEA. In practice, there exist a risk to overrun hygienic norm value of 90Sr content in fuel wood and brushwood for the total area of Ivankov region.

Keywords: 90Sr, 137Cs, radioecology, the Chernobyl accident, forest ecosystems, radioactive contamination, permissible levels.

References:

1. Sanitary Standard of Specific Activity of 137Cs and 90Sr in Wood and Products of Wood (HNPAR, 2005) 3 p. Approved by the Ministry of Health of Ukraine on 31.10.2005, #573. (Ukr)

2. I.P. Los', N.D. Shabunina, O.O. Orlov et al. Foundation of standard of radionuclides content in the cordwood and its justification assessment. Dovkillya ta Zdorov’ya 2 (2008) 19. (Ukr) http://www.dovkil-zdorov.kiev.ua/env/45-0019.pdf

3. State Hygienic Standards GN 6.6.1.1-130-2006. Acceptable levels of 137Cs and 90Sr in food and drinking water (DR-2006). Ofitsiinyi Visnyk Ukrayiny 29 (2006) 142. (Ukr) http://search.ligazakon.ua/l_doc2.nsf/link1/RE12719.html

4. Assessing radiation doses to the public from radionuclides in timber and wood products. IAEA-TECDOC-1376 (Vienna: IAEA, 2003) 67 p. http://www-pub.iaea.org/MTCD/publications/PDF/te_1376_web.pdf

5. O.O. Orlov, V.V. Dolin (Ed. by E.V. Sobotovych). Biogeochemistry of Cesium-137 in Forest-Swamp Ecosystems of Ukrainian Polissya (Kyiv: Nauk. Dumka, 2010) 198 p. (Ukr)

6. K.F. Shytyuk. Evaluation of forest management in Chernobyl NPP zone based on behavior patterns of radionuclides in forest ecosystems. Abstract of PhD thesis in biol. sciences (Kyiv: Taras Shevchenko National University, 2011) 25 p. (Ukr)

7. Handbook of Parameter Values for the Prediction of Radionuclide Transfer in Terrestrial and Freshwater Environments. Report IAEA-TRS-472 (Vienna, 2010) 194 p. http://www-pub.iaea.org/MTCD/publications/PDF/trs472_web.pdf

8. CD ATLAS: Ukraine, Radioactive Contamination (MES, Ltd. "Intellectual Systems GEO", 2008).

9. V.A. Kashparov, S.M. Lundin, Yu.V. Khomutinin et al. Soil contamination with 90Sr in the near zone of the Chernobyl accident. J. of Environment Radioactivity 56(3) (2001) 285. https://doi.org/10.1016/S0265-931X(00)00207-1

10. V.A. Kashparov, S.M. Lundin, S.I. Zvarich et al. Territory contamination with the radionuclides representing the fuel component of Chernobyl fallout. The Science of the Total Environment 317 (2003) 105. https://doi.org/10.1016/S0048-9697(03)00336-X

11. V.A. Kashparov, V.P. Protsak, N. Ahamdach et al. Dissolution kinetics of particles of irradiated Chernobyl nuclear fuel: influence of pH and oxidation state on the release of radionuclides in contaminated soil of Chernobyl. J. of Nuclear Materials 279 (2000) 225. https://doi.org/10.1016/S0022-3115(00)00010-6

12. V.A. Kashparov, N. Ahamdach, S.I. Zvarich et al. Kinetics of dissolution of Chernobyl fuel particles in soil in natural conditions. J. of Environmental Radioactivity 72(3) (2004) 335. https://doi.org/10.1016/j.jenvrad.2003.08.002

13. V.A. Kashparov, S.M. Lundin, A.M. Kadygrib et al. Forest fires in the territory contaminated as a result of the Chernobyl accident: radioactive aerosol resuspension and exposure of fire-fighters. J. of Environmental Radioactivity 51 (2000) 281. https://doi.org/10.1016/S0265-931X(00)00082-5

14. V.I. Yoschenko, V.A. Kashparov, V.P. Protsak et al. Resuspension and redistribution of radionuclides during grassland and forest fires in the Chernobyl exclusion zone: part I. Fire experiments. J. of Environmental Radioactivity 86(2) (2006) 143. https://doi.org/10.1016/j.jenvrad.2005.08.003

15. V.I. Yoschenko, V.A. Kashparov, S.E. Levchuk et al. Resuspension and redistribution of radionuclides during grassland and forest fires in the Chernobyl exclusion zone: part II. Modeling the transport process. J. of Environmental Radioactivity 87(3) (2006) 260. https://doi.org/10.1016/j.jenvrad.2005.12.003

16. N. Evangeliou, Y. Balkanski, A. Cozic et al. Wildfires in Chernobyl-contaminated forests and risks to the population and the environment: A new nuclear disaster about to happen? Environment International 73 (2014) 346. https://doi.org/10.1016/j.envint.2014.08.012

17. Yu.V. Khomutinin, V.A. Kashparov, E.I. Zhebrovskaya. Optimization of Sampling and Measurement of Samples with the Radioecological Monitoring (Kyiv: VIPOL, 2001) 160 p. (Rus) Book

18. M.M. Gorodnii, A.P. Lisoval, A.V. Bykin et al. (Ed. by M.M Gorodnii). Agrochemical Analysis (Kyiv, Aristey, 2004) 522 p. (Ukr)

19. F.I. Pavlotskaya. Zhurnal Analiticheskoj Khimii 52(2) (1997) 126. (Rus)

20. Yu.A. Ivanov, S.E. Levchuk, Yu.V. Khomutinin et al. Mobility of 90Sr and 137Cs in soils characterized with contrasting properties. Nucl. Phys. At. Energy 14(3) (2013) 288. (Rus) http://jnpae.kinr.kiev.ua/14.3/Articles_PDF/jnpae-2013-14-0288-Ivanov.pdf

21. L.M. Otreshko, S.E. Levchuk, L.V. Ioshchenko. Concentration of 90Sr in grain on fuel traces of the Chornobyl radioactive fallout. Nucl. Phys. At. Energy 15(2) (2014) 171. (Ukr) http://jnpae.kinr.kiev.ua/15.2/Articles_PDF/jnpae-2014-15-0171-Otreshko.pdf

22. V.A. Kashparov, S.E. Levchuk, L.M. Otreshko, I.M. Maloshtan. Radiatsionnaya biologiya. Radioekologiya 53(6) (2013) 639. (Rus) https://doi.org/10.7868/S0869803113060052

23. Y. Thiry, C. Colle, V. Yoschenko et al. Impact of Scots pine (Pinus sylvestris L.) plantings on long term 137Cs and 90Sr recycling from a waste burial site in the Chernobyl red forest. J. of Environmental Radioactivity 100(12) (2009) 1062. https://doi.org/10.1016/j.jenvrad.2009.05.003