NATURAL AND TECHNOGENIC RADIONUCLIDES IN SOIL PLAVSK RADIOACTIVE SPOT OF TULA REGION

Author:  Romantsova N.А.

Reference: Gazette “XXI ВЕК: ИТОГИ ПРОШЛОГО И ПРОБЛЕМЫ НАСТОЯЩЕГО ПЛЮС” (XXI CENTURY: PAST AND PRESENT PROBLEMS PLUS), 2012

ISSN: 2221-951x

DOI: 57.045:57.042

Keywords: natural and technogenic radionuclides, 40k, 232th, 226ra, 137cs, Tula region

Abstract: The modern radiating background of the Plavsky radioactive spot of Tula region is formed at the expense of natural (40К,232Th,226Ra) and technogenic radionuclides (137Cs). Thus the share 137Cs from the general stocks of radionuclides in soils makes 48-67 %, and as a part of vegetative production œ only 5-14 % that reveals insignificant parameters of transition of an element from soils in plants.

URL: http://elibrary.ru/item.asp?id=18202229

DYNAMICS OF DECREASING CAESIUM 137 IN AGROCENOSES OF AUTUMN WHEAT IN ORYOL REGION FROM 1985 TO 2007

Author: Kaz’min V.M., Polyakov A.G.

Reference: Scientific Notes of Orel State University, 2008 Series: natural, technical and health sciences

ISSN: 1998-2739

DOI:

Keywords: agrocenoses contamination, decrease of 137cs, autumn wheat

Abstract: In the article is examined the danger of technogenic pollution of agrocenoses by radioactive substances, where Chernobyl AES accident was of the main importance. The dynamics of decreasing Cs137 in autumn wheat agrocenoses in Orel region from 1985 to 2007 is being analyzed.

URL: http://elibrary.ru/item.asp?id=13217716

The change in efficiency of protective measures for reduction of 137Cs accumulation by agricultural plants in various periods after the Chernobyl accident

Author: Panov A.V., Aleksakhin R.M., Muzalevskaya A.A.

Reference: Gazette “РАДИАЦИОННАЯ БИОЛОГИЯ. РАДИОЭКОЛОГИЯ “ (Radiation Biology, Radioecology), 2011

ISSN: 0869-8031

DOI: 10.1134/S0869803111010140

Keywords: Bryansk region, transfer of 137cs, contamination of agricultural products, 20 years after Chernobyl accident

Abstract: On the example of south-western districts of the Bryansk region, the article assess the dynamics of the coefficients of transfer of 137Cs in plants. Describes also the impact of protective measures on the accumulation of radionuclides in agricultural products. Distinguishes three periods decrease of 137Cs in the plant, during the 20 years after the Chernobyl accident. Shows the accumulation of the radionuclide-fallout, natural biogeochemical processes and protective measures to reduce the accumulation of 137Cs in agricultural plants for various periods after fallout. Describes forecast of maximum permissible levels of 137Cs contamination in agricultural land, on which it is possible to obtain crop products, meeting current standards, at different levels of protective measures in the contaminated areas. Estimates the period of time after the radioactive fallout, in which production of crops and forage production was provided, according to appropriate radiological standards.

URL: http://www.ncbi.nlm.nih.gov/pubmed/21520624

On the influence of flooding on the distribution of 137CS and 90SR in forest ecosystems

Author: Perevolotskaya T.V., Bulavik I.M., Perevolotsky A.N.

Reference: Gazette “РАДИАЦИОННАЯ БИОЛОГИЯ. РАДИОЭКОЛОГИЯ “ (Radiation Biology, Radioecology), 2009

ISSN: 0869-8031

DOI: 10.1134/S0869803109030059

Keywords: 137cs, 90sr, ground water, phytomass

Abstract: The distribution of 137Cs and 90Sr in oak, pine and hornbeam stands at different levels of groundwater is analyzed. It is proven that the scale of migration of 137Cs and 90Sr in the vertical profile of the soils is determined by level of ground water in the experimental field: closer to the surface the ground water is found, the less radionuclides is contained on the surface of the soil, and vice versa. Coefficients are determined by “fast” and “slow” quasidiffusion of 137Cs and 90Sr. Description of the contribution of these components to the overall migration of radionuclide transport in the vertical profile of the soil. Coefficients of decreasing of 137Cs and increasing of 90Sr, for the element of overground phytomass by the decreasing of groundwater, is observed. 

URL: http://elibrary.ru/item.asp?id=12450575

137Cs in deep-water lakes: Analysis of the peculiarities of water contamination and purification (English)

Author: Bakunov N.A., Bol’shiyanov D.Yu., Makarov A.S.

Reference: Gazette “ВОДНЫЕ РЕСУРСЫ“, St. Petersbourg, 2008

ISSN:  0097-8078

DOI: 10.1134/S0097807808060055

Keywords: 137cs, water bodies, deep lakes

Abstract: The assessment of 137Cs concentration in water based on the model of radionuclide absorption by the bottom sediment of a closed water body is applicable to deep-water lakes with slower water circulation (the time of water exchange exceeding 10 years). The low river runoff from such lakes does not determine their water purification from 137Cs because of the predominance of the process of 137Cs sorption by suspension and bottom sediment. The contamination of a deep-water arctic lake with global 137Cs is reconstructed.

URL: http://link.springer.com/article/10.1134%2FS0097807808060055#

About production of normative-clean crop and forage under the condition of soil contamination by 137cs

Author: Panov A.V., Muzalevskaya A.A., Aleksakhin R.M., Vlasenko E.V., Prudnikov P.V.

Reference: Gazette “РАДИАЦИОННАЯ ГИГИЕНА” (radiation hygiene), 2008

ISSN: 1998-426x

Keywords: CHERNOBYL ACCIDENT,   AGRICULTURAL PRODUCTION,   RADIOACTIVE CONTAMINATION,   PROTECTIVE MEASURES,   RADIATION PROTECTION

Abstract: Presents forecast of maximum permissible levels of 137Cs contamination on agricultural land, on which the it is possible to obtain products that meet current standards, at different levels of protective measures in the contaminated areas. On the example of south-western districts of the Bryansk region an assessment is given on the production of radioecologically appropriate crop and forage, in the period after the land was contaminated by radioactive fallout.

URL: http://elibrary.ru/item.asp?id=11992046

Residual radioactive contamination at the peaceful underground nuclear explosion sites “Craton-3″ and “Crystal” in the Republic of Sakha (Yakutia).

Author: Gedeonov AD, Petrov ER, Alexeev IN, Kuleshova VG, Savopulo ML, Burtsev IS, Shkroev VY, Arkhipov VI.

Reference: J Environ Radioact. 2002;60(1-2):221-34.

ISSN:

Keywords: peaceful underground nuclear explosion sites “Craton-3″ and “Crystal”, 137cs

Abstract: In this paper, results are reported on the concentrations and activity ratios of 137Cs, 239+240Pu and 238Pu in soils, lichen and bottom sediments collected at the peaceful underground nuclear explosion sites “Craton-3″ and “Crystal” (Republic of Sakha (Yakutia), North-East Siberia). At the “Craton-3″ site, 239- 240Pu concentrations in the range 6.2 mBq/g to 5.9 Bq/g in surface soils (0-5 cm) and 239+240Pu concentrations up to 7.4 Bq/g in lichen were observed. The 137Cs concentration in measured soils range from 0.52 to 216 Bq/g for the near-plume and from 1.65 to 21.5 Bq/g for the far-plume. In lichen, 137Cs concentration varied from a global background level up to 251 Bq/g. Radioactive contamination at “Crystal” demonstrates an extremely irregular distribution of 239,240Pu and 137Cs in environmental samples taken at locations within 150 m radius of the site. Further work on compiling detailed maps of radioactive contamination of the territory around “Craton-3″ and “Crystal” is discussed.

URL: http://www.ncbi.nlm.nih.gov/pubmed/11936609

137Cs Distribution and Accumulation in the Tissues of Cultivated Funghi (Pleurotus ostreatus)

Author:  Tsvetnova O. B., Shcheglov A. I., Polyanskaya L. M.

Reference: Gazette “РАДИАЦИОННАЯ БИОЛОГИЯ. РАДИОЭКОЛОГИЯ “ (Radiation Biology, Radioecology), 2005

ISSN: 0869-8031

Keywords:  contamination, funghi, accumulation, distribution

Abstract: The authors examined 137Cs accumulation and distribution in different structures and tissues of Pleurotus ostreatus cultivated under laboratory conditions. The fungi were shown to concentrate 137Cs. A higher concentrations of the radionuclides in the fungi compared to their substrate is manifested at the first stages of the fruit body formation, the maximum content of137 Cs is accumulated by fungi in the middle of bearing stage. The fungus tissues are different by their accumulative capacity as follows (ascending range): central, more dense part of the stipe < stipe < mycelium < cap < generative tissues. 137Cs accumulation in the fruit bodies depends also on the fungus size and age.

URL:  http://elibrary.ru/item.asp?id=9149820

IMITATIVE MODEL 137Cs THREE-DIMENSIONAL MIGRATION IN SOILS

Author: Mamikhin S.V., Badawy W.M. (Egypt)

Reference: Gazette “ВЕСТНИК МОСКОВСКОГО УНИВЕРСИТЕТА. СЕРИЯ 17: ПОЧВОВЕДЕНИЕ“ (Bulletin of the Moscow University- series 17: soil management), 2011

ISSN: 0137-0944

Keywords:  RADIONUCLIDES,   MIGRATION,   SOIL,   IMITATIVE MODEL 

Abstract: In the present work algorithm of procreation of radionuclide migration in soil and its numerical embodying as imitative model of radiocesium behaviour in some volume of soil in microlandscape boundaries, including at irregular contamination and at presence of the expressed angle of lean of soil surface, are submitted. The model can also be applied at prediction of ecotoxicant redistribution in soil.

URL: http://elibrary.ru/item.asp?id=17108967

Radiological efficiency of potassium fertilizer in forest plantations

Author: Bulavik, I.M.

Reference: Gazette “МЕДИКО-БИОЛОГИЧЕСКИЕ ПРОБЛЕМЫ ЖИЗНЕДЕЯТЕЛЬНОСТИ” (medico-biologic problems of vital activities), Gomel, 2011

ISSN: 2074-2088

Keywords: 137CS,   PINE STANDS,   WOOD,   POTASSIUM FERTILIZERS,   SPECIFIC ACTIVITY

Abstract: Introduces investigations on the influence of potassium fertilizers on the accumulation level of 137cs in the wood of Scots pine (Pinus sylvestris L.). Proofs of absence of significant radiological effect in maturing and mature pine fertilized with potassium. 

URL: http://elibrary.ru/item.asp?id=16519243