Article
A sequential determination of Sr-90 and Po-210 in food samples
Author/s | Hurtado Bermúdez, Santiago José
Más Balbuena, José Luis Villa Alfageme, María |
Department | Universidad de Sevilla. Departamento de Física Aplicada I |
Publication Date | 2017 |
Deposit Date | 2024-04-16 |
Published in |
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Abstract | The latest EU Council Regulation 2016/52/Euratom updates the emergency limits on radionuclides in foods including 210Po and 90Sr, two of the most important radionuclides for radiological dose from the ingestion pathway. A ... The latest EU Council Regulation 2016/52/Euratom updates the emergency limits on radionuclides in foods including 210Po and 90Sr, two of the most important radionuclides for radiological dose from the ingestion pathway. A novel and straightforward method has been developed for sequential determination of 90Sr and 210Po in food samples using ultra low-level liquid scintillation counting and alpha-particle spectrometry. For 90Sr analysis, the method makes use of stable strontium as yield tracer, and 210Po is determined through self-deposition using 209Po as a yield tracer. The quantification limit for this method is 25.0 and 2.0 Bq kg−1 for 90Sr and 210Po, respectively. The proposed radiochemical separation can be completed within 2 days for a batch of 12 samples. The radiochemical procedure was validated by its application for the measurement of IAEA certified reference materials, and through participation in a national intercomparison exercise. Results are also presented in seafood from the Mediterranean coast. |
Citation | Hurtado Bermúdez, S.J., Más Balbuena, J.L. y Villa Alfageme, M. (2017). A sequential determination of Sr-90 and Po-210 in food samples. FOOD CHEMISTRY, 229, 159-164. https://doi.org/10.1016/j.foodchem.2017.02.077. |
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