Factors influencing the increased Sr radioisotope migration in highly alkaline groundwater at Chornobyl NPP site.

This paper analyses the formation of high Sr concentration in strong alkaline (pH = 9.5-12.5) groundwater using data of the 27 years of observations around the destroyed Chernobyl NPP Unit 4.

Long term studying of uranium and radium-226 activity in drinking water in some regions of Ukraine and assessment of corresponding hypotetical irradiation doses.

The article summarizes the activity concentrations data of Ra and the sum of uranium isotopes (∑U) in samples of drinking underground water for different regions of Ukraine studied during 1998-2023 in the radiation monitoring laboratory of the State Institution "O.M. Marzieiev Institute of Public Health National Academy of Medical Sciences of Ukraine.

Isotope composition of groundwater and surface waters in the area of the Dombrovsky quarry of Kalush-Golinsk deposit of potassium salts.

Enrichment of heavy isotopes of hydrogen (D, H) and oxygen (О) is observed in water samples collected from open brine storage of Kalush-Golinsky deposit. The brine storage facilities were formed during the operation of the Kalush-Golynsky deposit of potassium salts and after its decommissioning. Enrichment of isotopes is also observed in groundwater samples, collected from wells located along with downstream groundwater from brine storage facilities.

[Tritium contents in water reservoirs and water supply sources in several regions of the Ukrainian S.S.R].

At present the main sources of tritium detectable in basins of the Ukrainian SSR are NPPs. Tritium control in waters is one of the most sensitive methods of environmental radio monitoring in the regions of NPPs sites and may serve as indicator of nuclear technology stability.

[Radon concentration in living accommodations in the Ukrainian S.S.R. in 1989].

The authors relate the tentative measurement data on radon-222 concentrations in different buildings situated in the Ukrainian bedrock geological region. The mean Rn222 concentration was found to be about 87 Bq/m-3 for single-family buildings and 31 Bq/m-3 for many-story sectional and brick buildings. The maximum concentrations were recorded in one-story adobe houses in the Zaporozhye and Kirovograd Regions (about 500 Bq/m-3), which corresponds to the effective equivalent dose about 40 m3b per year.