Smart Energy and Sustainable Environment , ISSN 2668-957X
2023, Volume 26, Issue 2
Pages 37-46

https://doi.org/10.46390/j.smensuen.26223.455

DETERMINATION AND EVOLUTION IN TIME OF RADIOACTIVITY LEVELS IN FRESHWATER FISH (CARASSIUSGIBELIO) SAMPLED FROM OLT RIVER, ROMANIA

Abstract

The paper presents a monitoring activity of the Freshwater fish (Carassius gibelio) samples consumed in Olt River, Romania. A monitoring study lasting 9 years (2014-2022) was realized. Two sampling points for the Olt River were chosen, the first one upstream of the discharge point of the magistrate channel “Deversor Olt” (background location) and respectively the second sampling point downstream of the liquid effluents discharge point (indicator location).

A maximum activity concentration for⁴⁰K of 95.75 Bq∙kg^-1 fw, is observed. The activity of interest radionuclides (⁷Be, ⁵¹Cr, ⁶⁰Co, ¹³⁷Cs, ²²⁶Ra, ²³⁵U) is below the detection limit. The method used was high resolution gamma ray spectrometry performed with an HPGe detector.

It was observed that the values recorded for the background location had a slight difference compared with the values recorded in the indicator locations. The nuclear activity in the pre-operational stage of the Experimental Pilot Plant for Tritium and Deuterium Separation did not have any impact on the environment so far.

This study creates a unique database that could be relevant for further Operational Program for Environmental Monitoring of the Experimental Pilot Plant and other economical agents in the area.

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