Qualitative assessment of sources and general dependencies in the behavior of anthropogenic radionuclides in the techa river

摘要

Research on radioactive contamination of the environment involves the important task of assessing the contribution from different sources of contamination. If there are two or more sources of contamination with similar radionuclide composition, assessment of the contribution from each source can be challenging. Such a problem exists, for instance, in the assessment of anthropogenic sources of radioactive contamination of water in the Techa River. At the present time, the main contaminating radionuclides for the Techa River are 90Sr, 137Cs, and 3H. In 2009-2010, the content of radionuclides in the water of the river was 90Sr-3.8-32.9 Bq L -1, 137Cs-0.02-2.43 Bq L -1, and 3H-31.0-263.2 Bq L -1. This work gives a qualitative assessment of the role of different contamination sources in the formation of volumetric activity of Sr in the water of the Techa River. Also, the behavior of anthropogenic radionuclides in the open fluvial river system is reviewed.