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Unexpected uncertainty in the use of simple sample machining technique for gamma-spectrometry.
Radiat Prot Dosimetry
November 2024
Fukushima Environmental Measurements and Radioactivity Monitoring Association, Fukushima-c, Fukushima 960-8132, Japan.
Elementary processing techniques such as cutting or grinding of foodstuffs are deemed adequate, particularly in the context of post-nuclear accidental situations, ensuring expeditious and effective testing for the gamma-ray spectrometry. Nevertheless, it is worth acknowledging that this straightforward procedure may predispose itself to appreciable variances in the detection efficiency of gamma-ray spectrometry, primarily attributable to the heterogeneity of the radioactivity distribution within the sample container, thereby incurring unexpected discrepancies or uncertainties. To investigate this impact, the precision of the actual sample measurements was scrutinised through statistical analysis.
View Article and Find Full Text PDFQuantitative risk assessment of radiocesium associated with Japanese foods imported into the United Kingdom.
Risk Anal
September 2024
Food Standards Agency, London, UK.
Damage to a nuclear power station resulted in radioactive contamination of certain areas of Japan in 2011. Legislation was put in place in Europe to establish controls on the import of certain types of food and feed, including a limit of 100 radioactive decays (becquerel, Bq) per second of radiocesium per kg. This legislation was retained in the United Kingdom after leaving the EU and then reviewed in 2021.
View Article and Find Full Text PDFAdaptation of FDMT to include process-based models and consider regional aspects following radionuclide deposition events.
Sci Total Environ
November 2024
DSA - Norwegian Radiation and Nuclear Safety Authority, Grini Næringspark 13, 1361 Østerås, Norway; Centre for Environmental Radioactivity (CERAD) CoE, Norwegian University of Life Sciences, P.O. Box 5003, N-1432 Ås, Norway.
Experience from earlier nuclear accidents has clearly shown the need for maintaining and developing appropriate modelling capabilities. Dealing with complex issues such as human exposure following a nuclear accident necessitates the implementation of a set of interconnected models such as FDMT. FDMT is an integrated module within the two main European decision support systems for radiological emergency preparedness, ARGOS and JRODOS, to simulate the transfer of radionuclides along terrestrial food chains and to predict their activity concentrations in foodstuffs.
View Article and Find Full Text PDFRadionuclides transfer from soil-to-tea leaves and concomitant doses to the Malaysian populace.
Appl Radiat Isot
October 2024
Nuclear Materials Authority, P.O. Box 530 El-Maadi, Cairo, Egypt; Ural Federal University, St. Mira, 19, 620002, Yekaterinburg, Russia.
One of the most well-liked energizing drinks is now tea, which is primarily used in Malaysia. The natural radioactivity in the associated soils where tea plants are cultivated plays a major role in determining the presence of radionuclides in tea leaves. The present study assesses the transfer of radionuclides from soil-to-tea leaves and then estimates the committed effective doses through tea consumption.
View Article and Find Full Text PDFAssessment of natural and artificial radioactivity concentrations in infant powdered milk consumed in Albania and estimation of the annual effective dose.
Appl Radiat Isot
September 2024
Institute of Applied Nuclear Physics, University of Tirana, Str. Th. Filipeu, P. O. Box 85, Tirana, Albania.
This study evaluates the radiological risk associated with the consumption of infant powdered milk in Albania. Infant powdered milk is the basic foodstuff for their growth and development in many countries around the world. The activity concentration of radionuclides (K, Ra, Th and Cs) was measured in fourteen types by using the gamma-ray technique.
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