In October 2017, most European countries reported unique atmospheric detections of
aerosol-bound radioruthenium (106Ru). The range of concentrations varied from some …

In October 2017 unusual 106Ru detections across most of Europe prompted the Institut de
Radioprotection et de Sûreté Nucléaire (IRSN) to analyze the event in order to locate the …

Understanding the circumstances of the undeclared 2017 nuclear release of ruthenium that
led to widespread detections of the radioisotope 106Ru in the Eurasian region, and whether …

Abstract 222 Rn is a noble radioactive gas produced along the 238 U decay chain, which is
present in the majority of soils and rocks. As 222 Rn is the most relevant source of natural …

From early April 2020, wildfires raged in the highly contaminated areas around the
Chernobyl nuclear power plant (CNPP), Ukraine. For about 4 weeks, the fires spread around …

The eighteen years (1993–2010) of continuous observations of the activity concentrations of
Radon (222Rn) and Thoron (220Rn) progenies within the atmosphere as recorded twice a …

Due to the short half-life of Rn-220, a primary standard for activity concentration of Rn-220
(thoron) in air (ie a homogeneous reference atmosphere consisting of a certified activity in a …

After the Chernobyl accident highly radioactive Ru particles, more than 100 kBq in activity
and more than 10 µm in diameter, were found hundreds of kilometres away from the plant …

Measurements of airborne radioactive aerosol concentration were carried out on the basis of
1–3 days samples after the Chernobyl disaster and during the period of 1992–2003 …

Our recent attempt to determine ultratrace-level 236U and 233U in small-volume seawater
samples was challenged by high and unstable procedure blanks in our environmental …