On the radiotoxic Po in coffee beans worldwide and the impact of roasting and brewing on its extraction into beverages: from the experiments to Po content prediction.

We determined radiotoxic Po in roasted coffee beans from different regions worldwide, the beverages, and tried to create the prediction model of Po content based on its growth location. Additionally, the experiments on Po losses and extraction were performed to describe the actual exposure to Po. Po concentrations in coffee beans and brews tuned out low (maximally of 0.

On the use of dated sediments to investigate historical nuclear discharges.

Studsvik, a Swedish nuclear research facility, has been releasing aquatic radioactive discharges in the Baltic Sea, through the bay Tvären, since 1959. The permissible discharge levels are regulated by the Swedish Radiation Safety Authority (SSM) but only information about Co, Cs, Eu, total alpha and beta activities were reported up to 2002. Since then, the reports cover most a more comprehensive set of radionuclides.

Plutonium Signatures in a Dated Sediment Core as a Tool to Reveal Nuclear Sources in the Baltic Sea.

Plutonium distribution was studied in an undisturbed sediment core sampled from the Tvären bay in the vicinity of the Studsvik nuclear facility in Sweden. The complete analysis, including minor isotopes, of the Pu isotope composition (Pu, Pu, Pu, Pu, Pu, and Pu) allowed us to establish the Pu origin in this area of the Baltic Sea and to reconstruct the Studsvik aquatic release history. The results show highly enriched Pu, probably originating from the Swedish nuclear program in the 1960s and 1970s and the handling of high burn-up nuclear fuel in the later years.

On Po and Pb in algae diet supplements - The assessed radiation hazard of aquatic superfoods.

Algae are believed to give health benefits. However, the studies showed they contain toxic elements, including radionuclides, and may affect human health. The study presents the values of activity concentrations of Po and Pb in the algae supplements available worldwide for adults.

Estimation of plutonium Pu budget in the Gulf of Gdańsk and the Gdańsk Basin (the southern Baltic Sea).

Presented have been the results of inventory estimation of anthropogenic beta-emitting Pu, in different components in the southern Baltic Sea ecosystem. The total Pu activity present in the Gulf of Gdańsk and the Gdańsk Basin for 2021 was estimated at 1.99 TBq and 7.