Article
Pharmacology & Pharmacy
Xiao Wu, Ruoning Yan, Rong Guan, Yi Du, Yuexin Liu, Shanhu Wu, Song Zhu, Min Song, Taijun Hang
Summary: This study conducted an arsenic-related health risk assessment of a realgar-containing traditional Chinese medicine called NiuHuangJieDu tablets (NHJDT) in healthy volunteers. The results showed that NHJDT was relatively safe in a single therapeutic dose, but long-term medication may lead to the accumulation of arsenic in blood and its slow excretion rate, posing health risks. Therefore, careful monitoring of arsenic exposure is important during the use of realgar-containing TCMs.
FRONTIERS IN PHARMACOLOGY
(2022)
Article
Environmental Sciences
Sarah Guy, Sally Gaw, Sarah Beaven, Andrew J. Pearson
Summary: The study evaluated the ionising radiation dose for New Zealanders from Po-210 in shellfish, finding that the majority did not exceed the reference level of 1000 mu Sv, indicating no cause for concern. However, over half of high shellfish consumers in areas with elevated Po-210 activity concentrations were exposed to ionising radiation higher than 1000 mu Sv annually. Exposure assessments for various demographic groups showed that higher shellfish consumption rates among those identifying as Maori led to higher doses of ionising radiation for this group.
JOURNAL OF ENVIRONMENTAL RADIOACTIVITY
(2022)
Article
Chemistry, Analytical
Dimitrios C. Xarchoulakos, Emmanouil Manoutsoglou, Nikolaos G. Kallithrakas-Kontos
Summary: A research on U-238, U-234, Pb-210, and Po-210 of groundwaters in Crete island in southern Greece was conducted, revealing the disequilibrium between these specific radionuclides. Uranium isotopes were separated and measured using alpha-particle spectrometry, while Po-210 and Pb-210 were deposited on plates for determination. The measured activities were found to be significantly lower than the reference values established by the E.U. and the W.H.O. for drinking water.
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
(2022)
Article
Environmental Sciences
Nurgul Hafizoglu, Latife Sahin, Ela Ganioglu, Benin Toklu Alicli
Summary: This study presents the concentrations of Po-210 radionuclide in various marine organisms from the northern part of the Sea of Marmara in 2019. The deposition of Po-210 in different species on different metal discs was investigated, and the disc with the highest deposition yield was determined. The specific activity and ingestion doses from consuming these marine species were also calculated.
WATER AIR AND SOIL POLLUTION
(2022)
Article
Physics, Fluids & Plasmas
P. Chiovaro, A. Quartararo, S. Basile, S. Ciattaglia, P. A. Di Maio, F. Moro, I Moscato, G. A. Spagnuolo
Summary: This paper focuses on the potential safety issue of highly radiotoxic radionuclide Po-210 production in the water-cooled lithium lead (WCLL) breeding blanket design of the nuclear fusion DEMO reactor proposed by the EUROfusion consortium. The Po-210 concentration in the PbLi circuit was assessed using a modified version of Bateman's equations and a one-dimensional convective fluid-dynamic model. Nuclear quantities were evaluated using Monte Carlo neutron transport analyses, and sensitivity analyses were performed to assess uncertainties in radiative-capture cross section and initial concentration of Bi-209 impurity. The results and safety implications of a PbLi accident leak were discussed.
Article
Environmental Sciences
Weifeng Yang, Xiufeng Zhao, Laodong Guo, Bangqin Huang, Min Chen, Ziming Fang, Xiao Zhang, Yusheng Qiu
Summary: The study found that soot in the northeastern South China Sea primarily originates from sediment resuspension on the shelf/slope, with increasing concentrations observed in the twilight zone. Export flux of soot from the euphotic zone was calculated using Po-210 deficits, showing the importance of sediment as a source of soot in the region. Coupling sediment-derived soot and Po-210-derived POC fluxes revealed a Martin Curve-like flux attenuation in the twilight zone, suggesting the potential for soot to constrain in situ POC fluxes and transport.
FRONTIERS IN MARINE SCIENCE
(2021)
Article
Environmental Sciences
Dagmara Struminska-Parulska, Jerzy Falandysz, Aleksandra Moniakowska
Summary: This study aimed to understand the accumulation of radioactivity in the dried sclerotium of Wolfiporia cocos and assess the potential effective dose for consumers. The research found that the intake of W. cocos sclerotia would not significantly change the effective radiation doses, indicating that the consumption appears to be safe from a radiological protection point of view.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Chemistry, Analytical
Josephine T. Kristensen, Xiaolin Hou
Summary: A method for determining the content of Po-210 in soil and sediment samples without the use of hydrofluoric acid has been developed. The method involves fusion of samples with sodium hydroxide and sodium peroxide, followed by extraction and measurement using alpha spectrometry.
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
(2023)
Article
Environmental Sciences
Lyubov M. Shaposhnikova, Natalya G. Rachkova, Tatyana P. Shubina
Summary: The aim of this study was to assess the ability of two moss species, Sphagnum girgensohnii and Pleurozium schreberi, to accumulate and retain Po-210 and Pb-210. The results showed that these moss species are effective biogeochemical barriers and long-term storage for Po-210 and Pb-210.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Chemistry, Analytical
S. Kelemen, C. -F. Savin, A. Timar-Gabor, R. -C. Begy
Summary: This study compares four acid digestion techniques and a control procedure for Po-210 determinations using alpha spectrometry on peat bog samples. The results indicate that method I produced similar results to the reference values with a positive variance of 0.5%, while method II showed a significant positive deviation of 2.1%. Methods III and IV had negative deviations from the reference value. The findings suggest that method II reduces digestion time by 94%, while still providing similar results for Po-210 activity and Po-209 yield to the control method, making it more suitable for rapid determinations.
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
(2023)
Article
Biochemistry & Molecular Biology
Vidya P. Kumar, Shukla Biswas, Gregory P. Holmes-Hampton, Torsten Goesch, William Fahl, Sanchita P. Ghosh
Summary: PrC-210, when administered orally, can effectively protect mice from radiation-induced hematopoietic and intestinal injury by accelerating recovery, reducing oxidative stress, and decreasing mortality.
Article
Materials Science, Multidisciplinary
Haohan Zhang, Tomo Suzuki-Muresan, Stephane Gin, Guillaume Blain, Thierry Sauvage, Olivier Wendling, Johan Vandenborre, Abdesselam Abdelouas
Summary: During the long-term disposal of high-level nuclear waste glass, it may be exposed to a vapor environment before contacting groundwater. The glass also experiences damage from self-irradiation. This study investigates the chemical durability of glass after hydration and irradiation, with a focus on the impact of ionizing effect. Results show that irradiation does not significantly modify chemical durability, but pre-hydrated glass exhibits an increase in the initial release of Si, possibly due to the dissolution of secondary phases. The total dissolution of the hydrated layer is observed, requiring further investigation into the release of radionuclides.
JOURNAL OF NUCLEAR MATERIALS
(2023)
Article
Physics, Nuclear
Chetan Sharma, B. R. Behera, Bharti Rohila, Amninderjeet Kaur, Neha Dhanda, Ashok Kumar, P. Sugathan, A. Jhingan, K. S. Golda, N. Saneesh, Mohit Kumar, H. Arora, Divya Arora, H. P. Sharma
Summary: Neutron multiplicities, folding angle distribution, mass distribution, and mass-energy distribution of the compound nucleus Po-210 produced through the C-12+Pt-198 reaction at 61.6 MeV excitation energy were measured. The measured neutron multiplicities were compared with the statistical model code JOANNE2 to determine the total fission time for the Po-210 compound nucleus. The results showed that the total fission time increased with excitation energy, indicating an increase in dissipation.
Article
Food Science & Technology
F. Pinero-Garcia, R. Thomas, J. Mantero, E. Forssell-Aronsson, M. Isaksson
Summary: Seafood consumption per capita in Sweden is higher than the global and European average. The distribution of 210Po in seafood samples is uneven, with higher concentrations in the digestive and reproductive systems and lower concentrations in seafood muscle. The annual intake of 210Po through seafood consumption in Sweden increases exponentially with age, with slightly higher intake in males than females.
Article
Environmental Sciences
Julian Resch, Kate Wolfer, Alexandre Barth, Markus Kalberer
Summary: In order to understand the sources and processes of organic aerosol particles, it is necessary to characterize their chemical composition. This study used liquid chromatography-mass spectrometry to analyze the effects of storage conditions and time on the composition of secondary organic aerosol. The results showed that low temperature storage conditions preserved the chemical composition, while storage at room temperature led to significant time-dependent changes.
ATMOSPHERIC CHEMISTRY AND PHYSICS
(2023)
