The Central Analytical laboratory of SSE “EcoCenter” began the conduction of hydrochemical monitoring

The environmental monitoring of water bodies in the Exclusion Zone cannot be considered complete without hydrochemical indicators of water quality.

A special section concerning the hydrochemical monitoring was added to the Regulations of the State Specialized Enterprise "Ecocentre" on radiation-environmental monitoring and radiation-dosimetry control on the territory of the Exclusion Zone and the zone of absolute (obligatory) resettlement for the period 2017-2021 (hereinafter - the Regulation).

The Central Analytical Laboratory (CAL) of the 2nd Class on the Characterization of Radioactive Waste (RW), which is part of the SSE "Ecocentre", began measuring the chemical composition of surface water in the Exclusion Zone in January 2017.

"Hydrochemical monitoring is carried out at two points of the Pripyat River. The frequency of sampling is one time every two weeks", - according to Yuliya Balashevska, the Head of CAL.

The most important tasks of hydrochemical monitoring in the Regulation are as follows:

Systematic monitoring of the waters quality in the Exclusion Zone;
Creation of models of the existing and predicted state of water resources in the Exclusion Zone and information base for making administrative decisions;
Assessment of existing risks and threats for the safe functioning of water ecosystems;
Creation of a reliable analytical base for explaining the anomalies of radionuclide behavior in surface waters;
Assessment of the effectiveness of measures to improve the state of water resources.

The personnel of the CAL, partly in the field, perform all measurements within the framework of the hydrochemical monitoring. In general, it is planned to measure 30 indicators, 26 of which are currently being worked out, in particular: hydrogen index (pH-factor), hardness, concentration of sulfates, chlorides, nitrates, nitrites, iron, zinc, lead, cadmium, aluminum, silicon, etc.

Despite the fact that the system of hydrochemical monitoring is only at the stage of formation (and, therefore, it is too early to draw conclusions about the state of water), we can already speak of a stable excess of the maximum acceptable concentration of iron in the water of the Pripyat River in 3-5 times according to sanitary rules and norms of protection of surface waters from contamination, which is typical for rivers flowing in the north of Ukraine.

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