Determination of Characteristic vs Anomalous Cs/Cs Isotopic Ratios in Radioactively Contaminated Environmental Samples.

A contamination with the ubiquitous radioactive fission product Cs cannot be assigned to its source. We used environmental samples with varying contamination levels from various parts of the world to establish their characteristic Cs/Cs isotope ratios and thereby allow their distinction. The samples included biological materials from Chernobyl and Fukushima, historic ashed human lung tissue from the 1960s from Austria, and trinitite from the Trinity Test Site, USA.

Radioactive Games? Radiation Hazard Assessment of the Tokyo Olympic Summer Games.

We conducted a comprehensive radiation hazard assessment of the Tokyo Olympic Games (Tokyo 2020, postponed to 2021). Our combined experimental and literature study focused on both external and internal exposure to ionizing radiation for athletes and visitors of the Games. The effective dose for a visit of 2 weeks ranges from 57 to 310 μSv (including flight dose).

Radionuclides in surface waters around the damaged Fukushima Daiichi NPP one month after the accident: Evidence of significant tritium release into the environment.

Following the Fukushima nuclear accident (2011), radionuclides mostly of volatile elements (e.g., I, Cs, Te) have been investigated frequently for their presence in the atmosphere, pedosphere, biosphere, and the Pacific Ocean.