A sequential determination of 90 Sr and 210 Po in food samples

The latest EU Council Regulation 2016/52/Euratom updates the emergency limits on radionuclides in foods including Po and Sr, 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...

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Bibliographic Details
Published inFood chemistry Vol. 229; p. 159
Main Authors Hurtado-Bermudez, S, Mas, J L, Villa-Alfageme, M
Format Journal Article
LanguageEnglish
Published England 15.08.2017
Subjects
Food Quality
Radioisotopes
Spectrum Analysis - methods
Strontium Radioisotopes - chemistry
Sequential determination
Seafood
LSC
Po
Sr
Alpha-particle spectrometry
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Summary:The latest EU Council Regulation 2016/52/Euratom updates the emergency limits on radionuclides in foods including Po and Sr, 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 Sr and Po in food samples using ultra low-level liquid scintillation counting and alpha-particle spectrometry. For Sr analysis, the method makes use of stable strontium as yield tracer, and Po is determined through self-deposition using Po as a yield tracer. The quantification limit for this method is 25.0 and 2.0Bqkg for Sr and Po, respectively. The proposed radiochemical separation can be completed within 2days 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.
ISSN:0308-8146