The current level of β-radioactivity in the Zaporizhzhya storage lake

  • O. O. Shugurov Oles Honchar Dnipro National University
  • T. A. Strigina Oles Honchar Dnipro National University
Keywords: Zaporizhzhya storage lake, radioisotopes, maximum permissible level, 90Sr, 137Cs

Abstract

The condition control of the Ukrainian rivers is an integral part of the population safety level. The change of such state can occur for several reasons. The first is the increase of pollution level from the working enterprises. The second – the efficiency reduction  of protective constructions which store the radioactive wastes of (tailings dam). And the third – movement changes of water masses which are capable to lift the radio nuclides received earlier from the river bed (for example, the accident on the Chernobil atomic station). Therefore, the aim of the work was the modern level evaluation of b-nuclide pollution (90Sr and 137Cs) in water of Zaporizhzhya storage lake on the largest density points of the industrial enterprises on the Dnieper river in the sequence Kamenskoe – Dnipro – Zaporizhzhya at different seasons of the three years. Within 2014–2016 we carried out investigations of Zaporizhzhya storage lake b-radiation level for different seasons. The sampling was made at depth from 1,0 m to 1,5 m on six points. These points corresponded to the coast ones of Zaporizhzhya storage lake which are bound up with the industrial enterprises wastes of Kamenskoe and Dnipro or the small rivers fall points into the Dnieper River. The sampling points were: a coastal area 200 m below the Dneprodzerzhinsky dam, the river port, Starie Kodaki, the mouth of the river Mokra Sura, village Vojskove and Fyodorivka. The water mass of 5 kg was taken from these points and poured into the glass bottles. For radioactive pollution level determination in river's points we used two samples by 60 dm3 volume or caesium (137Cs) and strontium (90Sr) definition. 90Sr activity in water was determined radiochemically by oxalates sedimentation method with the subsequent measurement on the UMF-1500 installation. The isotope 137Cs was besieged by potassium ferrocyanide from a muriatic solution with the subsequent measurement on a small background installation The general β-radioactivity (Bq/l) was determined in the samples on the radiometer-«Beta» with the help of the SBT-13 counter by direct measurement method of samples. We showed that the levels of general β-activity water or at the investigated selection points of Zaporizhzhya storage lake fluctuated on average from 0,14 to 0,24 Bq/l, the content of 90Sr radionuclides in water is from 0,029 to 0,055 Bq/l, for 137Cs – is 0,042 Bq/l. In autumn β-activity level in Zaporozhzhya storage lake water decreased in comparison with spring – summer seasons. It is typical for storage lakes with a superficial filling which is followed by a relative increase of radioactive materials in water from deeply lying breeds bottom. For 90Sr, the effect of fluctuations in its concentration is observed, depending on the presence of industrial centers on the way of water movement along the Zaporizhzhya Reservoir. This effect not marked for 137Cs. An assessment of the level of water pollution has shown that in our time the indicators of the studied isotopes do not exceed the permissible levels of radioactivity stipulated by the norms of radiation safety of Ukraine from 1997.

References

Andreev, B. F., et al., 2005. Izotopi: svojstva, poluchenie, primenenie [Isotopes: properties, production, application]. Fizmatlit, Moscow (in Russian).
Bagenov, V. A., 1990. Vrednie himicheskie vesh-hestva [The harmful chemical substances]. Chemical, Leningrad (in Russian).
Belokon, A. S., Lavrova, T. V., Dvoretsky, A. I., 2002. Zabrudnennja radionuclidami richki Ingulets ta jj pritokiv [Contamination by radionuclides of the river Ingulets and it’s influx]. Herald of Dnipropetrovsk university (series: Biology. Ecology), 10(1), 79–86 (in Ukrainian).
Belokon, A. S., Lavrova, T. V., Dvoretsky, A. I., 2003. Radioecologicheskie issledovanie vodnih ekosistem v zone vlijanija obektov uganopererabativajushih predprijatij [Radioecological studies of aquatic ecosystems in the impact zone of uranium processing enterprises]. III Radiation research congress (Radiobiology and Radioecology). Kiev (in Ukrainian).
Egorov, V. N., et al, 2006. Сontent 137Cs, 40K, 90Sr, 210Po radionuclides and some chemical pollutants in the Black Sea mussels Mytilus galloprovincialis. Marine Ecol. J. 5(3), 70–78.
Gudkov, D. I., Kagljan, A. E., Nazarov, A. B., Klenus, V. G., 2007. Radionuklidi v ribe zoni otchushdenija Chernobilskoj AES [Radionuclides in fish areas of alienation of the Chernobyl nuclear power plant]. Reports of the National Academy of Sciences of Ukraine 12, 177–183 (in Russian).
Kitsno, V. O., Polishuk, S. V., Gudkov, I. M., 2008. Osnovi radiobiologii ta radioeko-logii: navchalnij posibnik [Basis of Radio-biology and Radioecology: Teach. Manual]. Hi-Tech. Press, Kyiv (in Ukrainian).
Lavrentjeva, G. V., Silin, I. I., Sinzinsis, B. I., 2015. Zagrjaznenie geosistem radioaktivnim stronsiem v rajone razmeshenija regoinalnogo hranilisha radioaktivnih othodov [The pollution of geosustems with a radioactive strontium in the district of placing aregional storage of radioactive wastes]. Geoecol., engin. geology, hydrogeol., geocryology 1, 36–46 (in Russian).
Ljashenko, V. I., 2004. Nauchnie osnovi povishenija bezopasnosti v uranodo-bivajushih regionah [Scientific basis for improving security in uranium mining regions]. Ecology of the environment and life safety 3, 56–70 (in Russian).
Mirzoeva, N. Ju., 2005. Indikatsija morskoj ekosistemi v otnoshenii zagrjaznenija postchernobilskim 90Sr [Indication of the marine ecosystem with respect to pollution by post-Chernobyl 90Sr]. Sci. notes Ternopil Nat. Pedagog. Univ. (series: Biology, special issue «Hydroecology») 4(27), 151–152 (in Russian).
Romanenko, V. D., 2006. Metodi hidroekologichnich doslidgen poverhnevih vod [The methods of hydroecological studies of surface waters]. Logos Ukraine, Kyiv (in Ukrainian).
Romanenko, V. D., 2001. Stan ta perspektivi ozdorovlennja bassejnu Dnipra [Condition and prospects for the Dnipro river pool recovery]. Sci. notes Ternopil Nat. Pedagog. Univ., 7–8 (in Ukrainian).
Rudik, A. F., 1998. Opredelenie aktivnosti estestvennih radionuklidiv v obektah okrushajushej sredi: metod. posobie [Determination of activity of natural radionuclides in environmental objects: methodical manual]. NPO AKP, Kyiv (in Ukrainian).
Varenko, N. I., Kovtun, T. N., Murzina, T. A., 1992. Izmenenie himicheskogo sostava vodi reki Samara (Dneprovskaja) pod vlijaniem hozajstvennoj dejatelnosti [Change in the chemical composition of the water of the Samara River (of Dniepr) under the influence of economic activity]. Hydrobiological journal 5, 93–97 (in Russian).
Zavaltseva, O. A., Berseneva, D. E., 2016. Otsenka sorbsionnoj sposobnosti raznah tipov pochvogruntov po otnosheniju k tseziju i stronstiju [Assessment of the sorption capability of different types of soils in respect to cesium and strontium]. Forum of young sci. 1, 39–42 (in Russian).

Abstract views: 60
PDF Downloads: 47
Published
2017-11-18
How to Cite
Shugurov, O., & Strigina, T. (2017). The current level of β-radioactivity in the Zaporizhzhya storage lake. Ecology and Noospherology, 28(3-4), 21-27. https://doi.org/https://doi.org/10.15421/031712