No abstract available

[en] The purpose of the work is studying of space distribution of Cs-137 and Sr-90 on the territory of the Republic of Belarus, and collection and analysis of samples, which can be used as background pollution during the building of the Nuclear Power Plant on the territory of the Republic of Belarus. (authors)

[en] It was determined, that the accumulation of radionuclides by the fish and their redistribution in the trophic chain depend on the complex of factors such as: kind, age, environment and conditions of existence. (authors)

No abstract available

[en] The article discusses about possibility of uranium extraction from mine waters of Kiik-Tal deposit of Tajikistan. (authors)

[en] Studying of migration forms of heave metals (HM) in the river waters was conducted by the following scheme: Neutron-activation analysis of divided fractions of separate forms of HM; experimental modeling by using of appropriate radio nuclides and thermodynamic modeling methods. There was developed and used neutron-activation method for getting quantitative data about forms of being HM in water. The ultra-filtration and electrodialyze fractionating and concentrating of separate forms of HM was carried out before neutron activation analyses. There were established optimal conditions of division form of being of HM by using radionuclides Co 60, Cr 51 and Sb 124 in cationic and anionic forms. During 2003-2005 we have studied space-temporarily variations of content and phase distribution of Hg, Zn, Cd, Sb, Co, Th, Br, Cr, Au, La and Eu in the waters of Amudarya, Syrdarya and Surkhandarya rivers. Average concentration of HM fluctuates from 4,1 mg/l for Fe, till 2 ng/l for Au. Suspended composing of river waters makes from mountain rock and lands in river-heads and concentration of elements in weight form not exceeding the level of Clark's contents. In formation of solved phase of river water main role plays atmospheric precipitation. This fact concern to the technogenic elements (Hg, Cd, Zn, Sb, Cr, Se, V) mainly. Limits of determination of HM - 10^-6-10^-10g/l. Relative mis-take of definition of 20 HM, including Hg, Zn, Cd, Sb, Co, U, Br and Cr in the river and sewage waters makes 10-25 %. It was established that researching elements in river waters migrates in suspended, colloid, cationic, anionic and neutral forms. Contents of colloid form of HM fluctuate between 5 % and 20 %. A comparable low content of organic matters in river waters of arid zones stipulates perceptivity of applying of thermodynamic methods in studying of being forms of HM. The thermodynamic calculations for determination being forms of HM in river waters were also carried out. On the base of experimental data and thermodynamic modeling, it was established that in distinction of river waters of humid zones, in migrations of HM in surface water in arid zones main role plays inorganic ligands (OH^-, SO₄^2-, Cl^-). Received results about forms of being HM and radionuclides may be the base for developing the technology of water preparation on water-pipe stations of researched rivers, and for effective clearing water from HM and radionuclides. In this work the contents of the different forms of heavy metals in the rivers of Uzbekistan were analyzed. The thermodynamic calculations for determination of being forms of heavy metals in river waters were carried out. Received results about forms of being HM and radionuclides can be the base for developing the technology of water preparation on water-pipe stations of researched rivers, and for effective clearing water from HM and radionuclides. (authors)

[en] The processes of migration and accumulation man-caused radionuclides in lake deposits are investigated. The dependence of distribution of radioactive isotopes in modern ground sediments from water exchangeability of lakes, character water catchment, chemical properties radionuclides is shown. (authors)

[en] The paper deals with the problems of different soils utilization for bioenergetic plantations allowing more completely use of their biological productivity. (authors)

[en] The cultivation of a willow in conditions of radioactive contamination is shown one of directions of use of the lands of the moved zone. (authors)

[en] The sociological survey showed that about 30 % of population lack of information which results in increased dose of internal irradiation compared to the well-informed part of population. (authors)