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

IF 1.5 3区化学 Q3 CHEMISTRY, ANALYTICAL

Journal of Radioanalytical and Nuclear Chemistry Pub Date : 2024-09-12 DOI:10.1007/s10967-024-09742-w

Rafaella Menezes Ayllon, Jefferson Koyaishi Torrecilla, Cátia Rosignoli Saueia, Marcelo Bessa Nisti, Guilherme Soares Zahn, Horácio Marconi da Silva Matias Dantas Linhares, Thammiris Mohamad El Hajj, Marcos Roberto Furlan, Paulo Sergio Cardoso da Silva

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Abstract

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 ²³²Th 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 ²²⁸Ra and ²²⁶Ra were found independently when using either the control or carbonate amended soil.

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在铌尾矿改良土壤中种植的莴苣中天然放射性核素（238U、226Ra、232Th、228Ra 和 40K）的活性浓度

本研究评估了从铌提取物中提取的碳酸钙在农业上的可能应用。这种碳酸钙储存在水坝中，富含 232Th 系列放射性核素，因此其使用受到限制。在耕种莴苣（Lactuca sativa L.）之前，对土壤中的放射性浓度进行了评估，并确定了土壤-植物转移因子。结果表明，对土壤中的碳酸盐施加稀释因子会导致土壤活性浓度显著增加。在栽培的莴苣中，无论是使用对照土壤还是碳酸盐改良土壤，都分别发现了 228Ra 和 226Ra 的高活性浓度。

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来源期刊

Journal of Radioanalytical and Nuclear Chemistry 化学-分析化学

CiteScore

2.80

自引率

18.80%

发文量

504

审稿时长

2.2 months

期刊介绍： An international periodical publishing original papers, letters, review papers and short communications on nuclear chemistry. The subjects covered include: Nuclear chemistry, Radiochemistry, Radiation chemistry, Radiobiological chemistry, Environmental radiochemistry, Production and control of radioisotopes and labelled compounds, Nuclear power plant chemistry, Nuclear fuel chemistry, Radioanalytical chemistry, Radiation detection and measurement, Nuclear instrumentation and automation, etc.