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A rapid method for screening 90Sr activity in water and milk samples using Cherenkov radiation

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Hellenic Nuclear Physics Society   

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A rapid method for screening 90Sr activity in water and milk samples using Cherenkov radiation (EN)
Ioannides, K. G.
Karamanis, D. T.
Patiris, D. C.
Stamoulis, K. C.
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
2019-12-05
Strontium-90 is one of the most dangerous fission products that enter the food chain. Because of its similar chemistry to calcium, it is deposited to bones posing a high risk for human health. 90Sr is a pure ^-emitter and decays to 90Y also a /3-emitter. The fast moving electrons emitted by the 90Y decay, produce Cherenkov radiation, which can be detected by a Liquid Scintillation Counter (LSC). Water and milk samples spiked with various concentrations of 9 0Sr/90Y in equilibrium were measured in a LSC (Tricarb 3170 TR/SL). The derived efficiencies were 50% for water samples and 13 % for milk samples. The minimum detectable activities (MDA) for measuring 90Sr in water and milk samples, without any pretreatment were calculated 240 mBq/L and 1 Bq/L respectively. The intervention levels for 90Sr contamination in water and milk samples, established by the European Union are 125 Bq/L and 75-125 Bq/L depending on age, respectively. The interference of 40K, which is present in milk due to its natural potassium content,was also investigated. (EN)
Annual Symposium of the Hellenic Nuclear Physics Society
English
Hellenic Nuclear Physics Society (HNPS) (EN)
2654-0088
2654-007X
Annual Symposium of the Hellenic Nuclear Physics Society; Τόμ. 14 (2005): HNPS2005; 113-118 (EL)
HNPS Advances in Nuclear Physics; Vol. 14 (2005): HNPS2005; 113-118 (EN)
Πνευματική ιδιοκτησία (c) 2019 K. C. Stamoulis, K. G. Ioannides, D. T. Karamanis, D. C. Patiris (EL)
Hellenic Nuclear Physics Society
Annual Symposium of the Hellenic Nuclear Physics Society



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