Chernobyl's Hidden Danger: Americium Overtakes Plutonium

Researchers have identified americium-241 as the primary long-term radioactive threat stemming from the Chernobyl nuclear accident, superseding plutonium. This radionuclide is a daughter product of plutonium-241 decay and is notably more hazardous due to its alpha radiation emission and extended active lifespan of over 4,300 years.

Unlike plutonium, americium compounds are water-soluble, facilitating their easier spread through soil into plant root systems and water sources. This mobility makes americium-241 a significant radioecological hazard, capable of entering food chains and posing a severe risk when ingested.

By 2056, plutonium-241's prevalence is projected to decrease significantly, while americium-241's abundance will increase. In heavily contaminated soils, americium-241 levels already matched total plutonium isotopes by 2000-2001 and are expected to double their prevalence by 2060.

These findings suggest that areas affected by Chernobyl contamination could remain unsuitable for agricultural activities for thousands of years. While mathematical models provide these projections, scientists acknowledge that natural factors and future rehabilitation efforts might influence these outcomes. Research results are to be presented at a seminar in Sevastopol.