About the transuranium elements and fission products content in the biological samples taken in the 30-km ChNPP zone

Key Points

• The radioactivity ratio of 241Am to 239+240Pu is significantly higher in plants than in soil, highlighting the transfer process.
• Biological samples taken from the 30-km ChNPP zone show diverse concentrations of radionuclides.
• Transfer of 137Cs and 90Sr in soil-to-mushroom and soil-to-plant interactions is discussed.
• Long-lived transuranium radionuclides were measured using radiochemical determination methods.