[en]If to refer air, water, soil and vegetation cover to major natural environments then a relative content of different radionuclides in these environments and the velocity they pass from one medium to another can determine the idea about the dynamics of their behaviour. In the last 10 years the USSR Goskomgidromet and then Rosgidromet conducted both deepened particular works on the dynamics of the behaviour of the ''Chernobyl'' radionuclides in natural environments and large-scale generalized works in the same direction. As a unique example of determining the dynamics of behaviour of caesium-137 radionuclides in the 60-km zone of the CNPP one can consider a grand experiment on quantitative measuring of the secondary contamination of the atmosphere by this very radionuclide in the process the dust is raised by the wind. For this purpose over an area of 11.5 thousand km2 (60-km zone) a reference network was established. Using a radial scheme one exposed here at a height of 1 m more than 500 standard gauze trays. The trays were exposed for a month. At the same time soil samples were taken near reference points and analyzed. The intercomparison of two sets of such data results in finding that the contamination field variability because of the dust transport makes a magnitude below 10-3 (per month)
Original TitleDinamika povedeniya Chernobyl'skikh radionuklidov v prirodnykh sredakh
Primary SubjectENVIRONMENTAL SCIENCES (B3110)
Secondary SubjectSPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS (C5100), ENVIRONMENTAL SCIENCES (B3310)
Source/ReportEuropean Commission (CEC), Brussels (Belgium); International Atomic Energy Agency, Vienna (Austria); World Health Organization, Geneva (Switzerland); 699 p; ISSN 1011-4289; ; Sep 1997; p. 423-431; International conference on one decade after Chernobyl: Summing up the consequences of the accident; Vienna (Austria); 8-12 Apr 1996; 2 figs, 2 tabs.
Country/OrganizationInternational Atomic Energy Agency (IAEA)
Descriptors (DEI)CESIUM 137, CHERNOBYLSK-4 REACTOR, CONTAMINATION, FALLOUT, MONITORING, RADIATION DOSES, RADIOACTIVE AEROSOLS, RADIOECOLOGICAL CONCENTRATION, RADIONUCLIDE MIGRATION
Descriptors (DEC)AEROSOLS, BETA DECAY RADIOISOTOPES, BETA-MINUS DECAY RADIOISOTOPES, CESIUM ISOTOPES, COLLOIDS, DISPERSIONS, ECOLOGICAL CONCENTRATION, ENRICHED URANIUM REACTORS, ENVIRONMENTAL TRANSPORT, GRAPHITE MODERATED REACTORS, INTERMEDIATE MASS NUCLEI, ISOTOPES, LWGR TYPE REACTORS, MASS TRANSFER, NUCLEI, ODD-EVEN NUCLEI, POWER REACTORS, RADIOISOTOPES, REACTORS, SOLS, THERMAL REACTORS, WATER COOLED REACTORS, YEARS LIVING RADIOISOTOPES