Pages: 52-56

Authors: Radislav Tošić, Dragana J. Todorović, Slavoljub S. Dragićević,
Ištvan S. Bikit, Sofija Forkapić, Branislav Blagojević

Abstract

This work presents the first estimate of  the radioactivity and sediment deposition rate of the Drenova reservoir. The radioactivity and sedimentation rate were computed applying the ²¹⁰Pb and ¹³⁷Cs methods. Samples of ²¹⁰Pb and ¹³⁷Cs were taken from four boreholes drilled in the Drenova reservoir in June 2010. Vertical distribution of the natural and artificial radionuclides in four boreholes was examined using a gamma spectrometry measurement with HpGe detectors, Gamma X type (10 keV-3 MeV). Activities ranging from 122-8 Bq/kg were found for ²¹⁰Pb, and from 140-0.8 Bq/kg for ¹³⁷Cs. The sedimentation rate in the Drenova reservoir varied from 1.96 to 2.90 cm per year for unsupported ²¹⁰Pb and 0.47 to 5.33 cm per year for ¹³⁷Cs.

 

Key words: radionuclide, ²¹⁰Pb, ¹³⁷Cs, sedimentation rate, Drenova reservoir

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