Activity concentration of natural radionuclides (238U, 226Ra, 232Th, 228Ra and 40K) in lettuce cultivated in soil amended with niobium tailings

This study evaluates the possible agricultural application of calcium carbonate derived from niobium extraction. This carbonate is stored in dams, and it is enriched with radionuclides from 232 Th series, which imposes restrictions on its use. Activity concentration evaluation in soil was performed...

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Published in:Journal of radioanalytical and nuclear chemistry 2024-11, Vol.333 (11), p.5493-5501
Main Authors: Ayllon, Rafaella Menezes, Torrecilla, Jefferson Koyaishi, Saueia, Cátia Rosignoli, Nisti, Marcelo Bessa, Zahn, Guilherme Soares, Linhares, Horácio Marconi da Silva Matias Dantas, Hajj, Thammiris Mohamad El, Furlan, Marcos Roberto, da Silva, Paulo Sergio Cardoso
Format: Article
Language:English
Subjects:
Calcium carbonate
Chemistry
Chemistry and Materials Science
Diagnostic Radiology
Dilution
Hadrons
Heavy Ions
Inorganic Chemistry
Niobium
Nuclear Chemistry
Nuclear Physics
Physical Chemistry
Radioisotopes
Radium 226
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Summary:This study evaluates the possible agricultural application of calcium carbonate derived from niobium extraction. This carbonate is stored in dams, and it is enriched with radionuclides from 232 Th series, which imposes restrictions on its use. Activity concentration evaluation in soil was performed before the tillage of lettuce ( Lactuca sativa L. ) and the soil–plant transfer factor was determined. Results showed the dilution factor applied to the carbonate in the soil causes insignificant increments in soil activity concentration. In cultivated lettuce, high activity concentrations of 228 Ra and 226 Ra were found independently when using either the control or carbonate amended soil.
ISSN:0236-5731
1588-2780
DOI:10.1007/s10967-024-09742-w