Activity concentrations of 238U, 232Th, 226Ra 137Cs and 40K radionuclides in honey samples from Romania. Lifetime cancer risk estimated

Bulubașa, Gheorghe; Costinel, Diana; Miu, Alina Florentina; Ene, Mihaela Roxana

doi:10.1016/j.jenvrad.2021.106626

Cited by 3 publications

(2 citation statements)

References 8 publications

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“…The lifetime risk of fatal cancer is related to the likelihood of developing lifetime cancer at a certain exposure [ 28 ]. Excess lifetime cancer risk (ELCR) estimates the probability that a human population will develop cancer from exposure to naturally occurring radionuclides during a given lifetime.…”

Section: Methodsmentioning

confidence: 99%

“…The activity of 226 Ra was determined by those of its decay products: 214 Bi (609 keV) and 214 Pb (352 keV). The activity of 232 Th was determined by the 232 Th decay series of 228 Ac (338 keV and 911 keV), 208 Tl (583.2 keV), and 212 Pb (238.6 keV) [27][28][29]. The activity of 40 K was directly measured based on the gamma-ray energy peak at 1460 keV.…”

Section: Sample Collection and Analysismentioning

confidence: 99%

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Geochemical Distribution and Environmental Risks of Radionuclides in Soils and Sediments Runoff of a Uranium Mining Area in South China

Li,

Wang,

Zhang

et al. 2024

Toxics

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Uranium mining activities have contributed to the distribution and uptake of radionuclides, which have increased the active concentrations of natural radionuclides in environmental media, causing elevated human health risks. The present study aims to assess the spatial distribution characteristics of natural radionuclides in the surface soils and river sediments of the typical granite uranium mining area in South China, as well as investigate the geochemical features of natural radionuclides in the soil and sediments to understand their migration processes. The activity concentrations for 238U, 226Ra, 232Th, and 40K ranged from 17–3925 Bq/kg, 50–1180 Bq/kg, 29–459 Bq/kg, and 240–1890 Bq/kg, respectively. The open-pit mining areas and tailings pond locations exhibited the highest concentrations of activity for all these radionuclides. This distribution points to an elevated potential health risk due to radiological exposure in these specific areas. Additionally, the values of radium equivalent activity (Raeq) and annual gonadal dose equivalent (AGDE) in those areas were higher than the limits recommended by ICRP (2021). 238U and 226Ra have a significant correlation (0.724), and the cluster analysis was showing a statistically meaningful cluster below 5 indicated that they have similar behavior during parent rock weathering and watershed erosion, and the distribution of 232Th and 40K were influenced by the addition of rock types. The activity ratios of 226Ra/238U, 226Ra/232Th, 238U/40K, and 226Ra/40K variation indicated that 40K more mobile than 226Ra and 238U, U(VI) was reduced to U(IV) by organic matter in the downstream area and re-entered into the sediment during the sediment surface runoff in the small watershed of the uranium ore open-pit mining area. Therefore, it is necessary to further seal up and repair the tailings landfill area.

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Section: Methodsmentioning

confidence: 99%