The use of the aquatic plant Elodea canadensis to assess the effects of low-dose gamma irradiation.

Responses of cytogenetic and growth endpoints of the aquatic plant Elodea canadensis were studied using the plants collected from non-contaminated control areas of the Yenisei River and exposed to external γ-radiation for 11-13 days in the laboratory. Elodea canadensis was exposed to 0.5-25 mGy/day γ-radiation dose rates from a Cs source.

Experimental assessment of Am accumulation in Carassius gibelio from amphipods.

Accumulation of dietary Am in freshwater omnivorous fish (Carassius gibelio) was studied aiming to estimate the distribution and retention of Am in the fish body. Amphipods labeled with Am served as a food item. From 0.

Comparative Study of Plutonium and Radiocaesium Content in the Muscle of Fish of the Yenisey River.

This work reports the first data on the content of plutonium (Pu) in the muscle tissues of the Northern pike (Esox lucius) and the Siberian dace (Leiciscus baicalensis) inhabiting the middle reaches of the Yenisey River in the vicinity of the radioactive discharge site. An increase in the content of Pu and radiocaesium (Cs) in pike muscles followed an increase in the volume of controlled discharges of these radionuclides to the Yenisey in 2018. The content of Pu in the muscles of pike (2-11 mBq/kg dry weight) and dace (1-4 mBq/kg dry weight) of the Yenisey fall within the range of values obtained by other authors for the ichthyofauna from water bodies contaminated with radioactive discharges from nuclear power plants and spent nuclear fuel processing plants.

Со-60 as a time marker to date sediment layers and estimate sediment transport distances during the 2006 flood event on the Yenisei River.

The study of bottom sediments collected from the Yenisei River downstream of the Mining-and-Chemical Combine (MCC) conducted from 2006 to 2016 revealed increased concentrations of Co, which was present in dispersed form and in the form of radioactive microparticles, in the upper core layers. The increase in Co activity concentration occurred when the 2006 extreme flood on the Yenisei washed away the radionuclide-containing soil from the riverbank at the MCC. The Cs/Co ratio in the upper layers of bottom sediments after the 2006 flood varied between 0.