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[en] The paper presents the data on Chernobyl radiocesium bound to suspended matter and bottom sediments at different locations along the sampling rout from Rivers of Chernobyl zone to upper Reservoirs of Dnieper River. These data were collected as a result of joint Ukrainian-Italian field exercises in the frame of ECP-3 project. It was found out that total 137Cs concentration in the water column decreases downstream the Chernobyl zone while KD in situ values substantially increase with approach to the Kiev HPS dam. Taking account of uniform hydro-chemical conditions in investigated area one can explain this phenomenon only by gradual elimination of coarse sandy component with low sorption capacity from the river flow by sedimentation. In contrary, radiocesium which is selectively sorbed and fixed on fine clay particles travels much longer distances and ensures observed higher KD in situ values. This conclusion is supported by the analyses of three sediment cores taken in upper, middle and lower parts of Kiev reservoir
Source
Karaoglou, A.; Desmet, G.; Kelly, G.N.; Menzel, H.G. (European Commission, Brussels (Belgium)); European Commission, Brussels (Belgium); Ministry for Emergency, Minsk (Belarus); Ministry for Emergency, Kiev (Ukraine); Ministry for Emergency, Mocsow (Russian Federation). Funding organisation: European Commission, Brussels (Belgium); 1192 p; ISSN 1018-5593; 
; 1996; p. 179-183; 1. international conference on 'The radiological consequences of the Chernobyl accident'; Minsk (Belarus); 18-22 Mar 1996; 1 tab., 2 figs., 4 refs.
; 1996; p. 179-183; 1. international conference on 'The radiological consequences of the Chernobyl accident'; Minsk (Belarus); 18-22 Mar 1996; 1 tab., 2 figs., 4 refs.