Th-232 Radiological Aspects of Carbonate Niobium Mining Waste Use as Agricultural Amendment

Autor: Rafaella Menezes Ayllon, Marcos R. Furlan, Thammiris Mohamad El Hajj, Paulo Sergio Cardoso Silva
Jazyk: English<br />Portuguese
Rok vydání: 2023
Předmět:
Zdroj: Brazilian Journal of Radiation Sciences, Vol 11, Iss 1A (Suppl.) (2023)
Druh dokumentu: article
ISSN: 2319-0612
DOI: 10.15392/2319-0612.2023.2223
Popis: The use of mining residues in agriculture may be possible, as long as there be previous studies in different areas, one of them being the analysis of the involved radionuclides behavior. This study determined the concentrations of 232Th activity in soil, soil treated with lime, soil with carbonate residue from niobium mining, soil with the mixture of lime and carbonate, in two moments. The transfer factor of 232Th from the soil to the plant was analyzed, in this case, lettuce (n=20), in the different types of treatment and in two moments. The addition of carbonate to the soils did not significantly alter the levels of radioactivity for 232Th radionuclide in lettuce. The effective dose resulting from the lettuce ingestion varied from 0.09 to 0.3 µSv y-1.
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