Radiomonitoring of plant products and soils of Polissia during the long-term period after the disaster at the Chornobyl Nuclear Power Plant
AbstractThe article highlights the consequences of the Chernobyl disaster. Northern Polissia has been and still remains the most polluted area. Full scale and limited economic activity is carried out on part of the contaminated territories. The zone of radioactive contamination includes half of the territory of this region, one third of the agricultural land and almost the same amount of the arable land. 9 districts, 734 towns and villages are located within the zone of radioactive contamination. In the long-term period after the disaster the situation in the contaminated areas has improved and become predictable due to natural processes of recovery and implementation of countermeasures based on results of monitoring. However, until today regions of Ukrainian Polissia continue to produce agricultural products which do not meet the requirements of government regulations concerning the content of radionuclides in food and appear to present a threat to consumers. To assess the accumulation of 137Cs in plant products, we investigated the activity of these radionuclides in potatoes, vegetables, root crops and grains, and calculated the ratios of its transition from the ground to the products, which helped evaluate the intensity and amount of accumulation of radionuclides during the completion of the half-life period of 137Cs and evaluate the radiological situation in the northern regions of Polissia. The density of soil contamination with 137Cs and its specific activity in plant products grown on private plots were studied in three different districts of Zhytomyr region: Narodychi, Korosten and Ovruch. Analysis of the density of soil pollution with the 137Cs isotopes in the northern part of Zhytomyr region in the post-disaster period shows that even 30 years after the tragedy, significant areas of arable land under certain conditions remain potentially dangerous on account of contaminated plant products. The specific activity of 137Cs in plant products grown on private plots was studied in residential places where soil contamination was detected. In particular, the list of studied crops included: potato tubers, white cabbage, fresh tomatoes, table beets, carrots, onions, beans, oat grains, corn grains. The most critical were populated areas located in zone II – village Vystupovychi of Ovruch district, village Loznytsia and village Khrystynivka of Narodychi district. In these settlements an excess of DR-2006 in plant products was noted despite the fact that an excess over the maximum permissible level of density of soil pollution was not observed. In decreasing order by the amount of CT 137Cs, we ranked crops as follows: beans > table beets > carrots > potato tubers > corn grains ˃ oats grains > white cabbage > onions > fresh tomatoes. For the population living on radioactively contaminated territories, plant products grown on private plots have been and still remain the main source of 137Cs radionuclides entering the body.
Dancause, K. N., Yevtushok, L., Lapchenko, S., Shumlyansky, I., Shevchenko, G., Wertelecki, W., & Garruto, R. M. (2010). Chronic radiation exposure in the Rivne – Polissia region of Ukraine: Implications for birth defects. American Journal of Human Biology, 22(5), 667–674.
Evangeliou, N., Hamburger, T., Talerko, N., Zibtsev, S., Bondar, Y., Stohl, A., Balkanski, Y., Mousseau, T. A., & Møller, A. P. (2016). Reconstructing the Chernobyl Nuclear Power Plant (CNPP) accident 30 years after. A unique database of air concentration and deposition measurements over Europe. Environmental Pollution, 216, 408–418.
Goulko, G. M., Chepurny, N. I., Jacob, P., Kairo, I. A., Likhtarev, I. A., Pröhl, G., & Sobolev, B. G. (1998). Thyroid dose and thyroid cancer incidence after the Chernobyl accident: Assessments for the Zhytomyr region (Ukraine). Radiation and Environmental Biophysics, 36(4), 261–273.
Handl, J., Beltz, D., Botsch, W., Harb, S., Jakob, D., Michel, R., & Romantschuk, L. D. (2003). Evaluation of radioactive exposure from 137Cs in contaminated areas of Northern Ukraine. Health Physics, 84(4), 502–517.
Hinton, T. G., Alexakhin, R., Balonov, M., Gentner, N., Hendry, J., Prister, B., Strand, P., & Woodhead, D. (2007). Radiation-induced effects on plants and animals: Findings of the United Nations Chernobyl Forum. Health Physics, 93(5), 427–440.
Ivanov, Y. A., Lewyckyj, N., Levchuk, S. E., Prister, B. S., Firsakova, S. K., Arkhipov, N. P., Arkhipov, A. N., Sandallsg, J., & Askbrant, S. (1997). Migration of 137Cs and 90Sr from Chernobyl fallout in Ukrainian, Belarussian and Russian soils. Journal of Environmental Radioactivity, 35(1), 1–21.
Jacob, P., Fesenko, S., Bogdevitch, I., Kashparov, V., Sanzharova, N., Grebenshi kova, N., Isamov, N., Lazarev, N., Panov, A., Ulanovsky, A., Zhuchenko, Y., & Zhurba, M. (2009). Rural areas affected by the Chernobyl accident: Radiation exposure and remediation strategies. Science of the Total Environment, 408(1), 14–25.
Maringer, F. J., Ackerl, C., Baumgartner, A., Burger-Scheidlin, C., Kocadag, M., Sterba, J. H., Stietka, M., & Welch, J. M. (2017). Long-term environmental radioactive contamination of Europe due to the Chernobyl accident-Results of the Joint Danube Survey 2013. Applied Radiation and Isotopes, 126, 100–105.
Michel, R., Daraoui, A., Gorny, M., Jakob, D., Sachse, R., Romantschuk, L. D., Alfimov, V., & Synal, H. A. (2015). Retrospective dosimetry of Iodine-131 exposures using Iodine-129 and Caesium-137 inventories in soils – A critical evaluation of the consequences of the Chernobyl accident in parts of Northern Ukraine. Journal of Environmental Radioactivity, 150, 20–35.
Michel, R., Handl, J., Ernst, T., Botsch, W., Szidat, S., Schmidt, A., Jakob, D., Beltz, D., Romantschuk, L., Synal, H.-A., Schnabel, C., & López-Gutiérrez, J. (2005). Iodine-129 in soils from Northern Ukraine and the retrospective dosimetry of the iodine-131 exposure after the Chernobyl accident. Science of the Total Environment, 340(1), 35–55.
Prister, B. S. (2007). Vedennya sil’s’kohospodars’koho vyrobnytstva na teryto riyakh, zabrudnenykh vnaslidok Chornobyl’s’koyi katastrofy, u viddalenyy period. Metodychni rekomendatsiyi [Agricultural production in areas contaminated by the Chernobyl disaster in the remote period. Guidelines]. Atika-N, Kyiv (in Ukrainian).
Prister, B., Loshchilov, N., Perepelyatnikova, L., Perepelyatnikov, G., & Bondar, P. (1992). Efficiency of measures aimed at decreasing the contamination of agricultural products in areas contaminated by the Chernobyl NPP accident. Science of the Total Environment, 112(1), 79–87.
Romanchuck, L. D., Fedonyuk, T. P., & Fedonyuk, R. G. (2017). The model of landscape vegetation influence on the mass transfer processes. Biosystems Diversity, 25(3), 203–209.
Romanchuk, L. D. (2015). Radioekologichna ocinka formuvannya dozovogo na vantazhennya u meshkantciv sil’s”kykh terytorij Polissya Ukrajiny [Radio ecological assessment of the formation of the dose load of the inhabitants of rural areas of Polissia of Ukraine], Polissya, Zhytomyr (in Ukrainian).
Strand, P., Balonov, M., Skuterud, L., Hove, K., Howard, B., Prister, B. S., Tmvnikova, I., & Ratnikov, A. (1996). Exposures from consumption of agricultural and semi-natural products. The Radiological Consequences of the Chernobyl Accident, 16544, 261–269.
Zablotska, L. B. (2016). 30 years after the Chernobyl Nuclear Accident: Time for reflection and re-evaluation of current disaster preparedness plans. Journal of Urban Health, 93(3), 407–413.
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