Journal of Radioanalytical and Nuclear Chemistry This is an RSS file. You can use it to subscribe to this data in your favourite RSS reader or to display this data on your own website or blog.

Densification study of sodium zirconium phosphate-type ceramic for immobilizing radionuclides of Sr prepared with microwave sintering from uranium tailing sand
In this study, a novel SrZr4(PO4)6 ceramic was synthesized using microwave sintering of uranium tailings. This method features shorter sintering times and efficient energy use. Sr replaces Na in sodium zirconium phosphate (NaZr2(PO4)3) due to similar ionic radii, transforming it into SrZr4(PO4)6 ceramics. The results showed that the sintered samples prepared by holding at 1200  °C for 50 min, which the density of the solidified body reached up to 3.2 g/cm3.The ceramics showcase outstanding leach resistance, with Sr leaching rates far below the nuclear industry standard (1  × 10−2 g m−2 d−1). Similarly, th...
Source: Journal of Radioanalytical and Nuclear Chemistry - February 24, 2024 Category: Nuclear Medicine Source Type: research

Sorption behavior of fission products (Tc, I) in marine and freshwater bottom sediments
AbstractThe study investigated the sorption behaviour of99Tc and125I on bottom sediments from the Japan Sea, Khanka Lake and commercially available sapropel. It was determined that organic matter can have an impact on the iodine sorption process. After a 20-day period, sapropel reached an equilibrium state with a sorption value of up to 100%. In real systems of bottom sediment –water in the Far East region, iodine sorption was found to be superior on marine bottom sediments with a sorption value reaching 85% within 20 days, as opposed to freshwater sediments which only reached up to 35% within the same period. Tc(VII) i...
Source: Journal of Radioanalytical and Nuclear Chemistry - February 24, 2024 Category: Nuclear Medicine Source Type: research

Preliminary investigation of radon-222 flux density in the soil surface: a case study of campus, China
AbstractRadon-222 (222Rn) is a global indoor health issue. A total of 74 points were measured in the woodland and grassland with the RAD7 device on the Hongxiang Campus of the University of South China. The results showed that the222Rn flux (RF) was 39.0 ± 30.3 mBq m−2 s−1 and 39.7 ± 29.3 mBq m−2 s−1 in the woodland and grassland, respectively. The value of RF map was lower than 50 mBq m−2 s−1 in most campus areas. The results serve as essential reference data for future222Rn risk-health assessment and management strategies on the campus. (Source: Journal of Radioanalytical and Nuclear Chemistry)
Source: Journal of Radioanalytical and Nuclear Chemistry - February 24, 2024 Category: Nuclear Medicine Source Type: research

A study on the relationship between the radiation detection quantity of NORM-containing products in Taiwan
This article compiles test results of 105 NORM-containing products categorized into bedding, clothing, and accessories for analysis using correlation coefficient from 2019 to 2022. Relationships between measurement quantities, external doses, internal doses and specific activities are investigated. Internal dose is predominantly related to the radon activity concentration for bedding products, with correlation coefficients exceeding 0.8. The coefficients decreases to 0.7 and 0.6 for clothing and accessory products, respectively. Regarding products exceed the regulatory limits, it is challenging to discern correlations betw...
Source: Journal of Radioanalytical and Nuclear Chemistry - February 24, 2024 Category: Nuclear Medicine Source Type: research

Insight into adsorption behavior of activated ZrO2 prepared by solution combustion for the removal of chromium and barium ions from aqueous solutions
AbstractThe prepared activated zirconium oxide was characterized using different analytic techniques and investigated as a new inorganic sorbent to get rid of the chromium and barium ions from the waste stream. Several experiments have been performed, including the impact of contact time, pH, initial ion concentration, temperature, desorption, and the effect of interfering ions. Different isotherm kinetic models were investigated. The outcomes demonstrated that, the second-order kinetic model was appropriate, and the monolayer capacities for the chromium and barium ions were 35.9 and 33.9  mg/g, respectively. Finally, zir...
Source: Journal of Radioanalytical and Nuclear Chemistry - February 24, 2024 Category: Nuclear Medicine Source Type: research

Synergistic aqueous biphasic separation of 90Nb and 89Zr from natY using green tea derived catechins
AbstractEnvironmentally benign aqueous biphasic separation (ABS) methods for separation of no-carrier added (NCA)90Nb and89Zr from alpha particle irradiatednatY target have been developed using nature resourced chemical, catechins, which is the most abundant polyphenol in green tea.90Nb was preferentially extracted in the catechins-PEG 6000 phase with a separation factor of 1.04  × 103 where the salt phase was NaHSO3. Similarly,89Zr was also preferentially extracted in the catechins-PEG 6000 phase with a separation factor of 1.92  × 104, where the salt phase was Na2SO4. (Source: Journal of Radioanalytical and Nuclear Chemistry)
Source: Journal of Radioanalytical and Nuclear Chemistry - February 23, 2024 Category: Nuclear Medicine Source Type: research

Investigation of defects formation in ZrN thin film by proton and swift heavy ion irradiations
AbstractZrN films were irradiated with 2  MeV proton and 91.3 MeV Xe ion. Our aim is to demonstrate the radiation damage tolerance of nanostructured ZrN. Uv–visible spectroscopy revealed localized surface plasmon resonance (LSPR) band at 650 nm of ZrN nanoparticles. After irradiation the LSPR band intensity increases and become larger . The band gap decreases, while Urbach energy increases indicating defect formation. It is found a better crystallinity and no swelling or contraction in the studied fluence range. Therefore, nanostructured ZrN can be used in harsh irradiation environments such as neutron reactors and ae...
Source: Journal of Radioanalytical and Nuclear Chemistry - February 22, 2024 Category: Nuclear Medicine Source Type: research

Enhancing artificial radionuclides monitoring: a Bayesian statistical approach combined with the multi time-interval analysis method
AbstractThis paper propose a binomial distribution model based on Bayesian statistics in the field of monitoring artificial radionuclides. A multi time-interval analysis method is adopted to extract the214Bi –214Po correlated events counts in the222Rn decay series. Then the model evaluates natural background using the ratio of correlated events counts to total α counts. The Beta distribution is used as the prior distribution of this model. We detailed discussed the process of posterior estimation, and compared the new approach with the conventional approaches. The results show the new approach has a more sensitive respo...
Source: Journal of Radioanalytical and Nuclear Chemistry - February 20, 2024 Category: Nuclear Medicine Source Type: research

Optimization of a new radiochemical method based on extraction chromatographic resins and plastic scintillation for measurement of 90Sr in nuclear waste
AbstractA purification method is developed to determine90Sr in radioactive waste. A separation based on Sr-resin ® with a pretreatment using TRU-resin® provides satisfactory Sr recovery yields before the90Sr measurement by liquid scintillation counting (LSC) regardless the analyzed samples with low or high activity level. The selectivity of the procedure is checked by measuring the90Y ingrowth after different days of separation without waiting for secular equilibrium. In order to obtain a REACH compliant method without scintillation cocktails, a plastic scintillation resin selective for Sr is implemented on the basis of ...
Source: Journal of Radioanalytical and Nuclear Chemistry - February 20, 2024 Category: Nuclear Medicine Source Type: research

Use of silver-containing sorbents in anionic species of radioactive iodine management in nuclear industry and the methods of obtaining them
AbstractSorbents for anionic species of iodine are required at every stage of129I management. Development of iodine adsorbing material suitable for usage as engineered safety barriers (ESB) component in deep geological repository (DGR) sites or geological disposal facilities (GDF) is a particularly important concern due to the final of disposal iodine-containing radioactive waste is one of the most challenging problem in nuclear industry nowadays. This literature review discusses data on silver-containing materials, which are characterized with the highest sorption properties towards anionic iodine species and high fixatio...
Source: Journal of Radioanalytical and Nuclear Chemistry - February 20, 2024 Category: Nuclear Medicine Source Type: research

Evaluation of 18F-AlF-labeled IF7 dimer as a promising molecular probe for tumor targeting PET imaging in mice
AbstractMolecular imaging technologies, such as PET imaging, have evolved into powerful tools for tumor diagnosis. Radiolabeled dimeric molecular probes have emerged as a promising strategy in PET imaging due to their outstanding characteristics. IF7, a peptide targeting Anxa1 overexpressed in endothelial cells of various tumor blood vessels, serves as an excellent tumor-targeting agent. This research aims to prepare IF7 dimer and evaluate its imaging performance and biological characteristics. The biological properties of the tracer were evaluated through in vitro experiments using U87 cells. MicroPET imaging and biodistr...
Source: Journal of Radioanalytical and Nuclear Chemistry - February 20, 2024 Category: Nuclear Medicine Source Type: research

Effect of alpha-particle irradiation on microwave-sintered actinide-contaminated soil glass waste
AbstractTo investigate the irradiation resistance of the microwave sintered contaminated soil samples, the samples were irradiated with 0.5  MeV He2+ ions. The property changes of the irradiated samples were investigated. After irradiation, the Vickers hardness values of the samples showed a relatively low degree of decrease, with a maximum reduction of 1.36%. The magnitude ofNLCe of samples before and after irradiation was in the order of 1  × 10–5 g·m−2·d−1. This result will provide a useful reference for the treatment of the contaminated soil.Graphical Abstract (Source: Journal of Radioanalytical and Nuclear Chemistry)
Source: Journal of Radioanalytical and Nuclear Chemistry - February 20, 2024 Category: Nuclear Medicine Source Type: research

The influence of sugar molecule type on the stability of lyophilized human serum albumin (HSA) nanocolloid kit
AbstractUsing sugar molecules as lyophilization protectants in HSA nanocolloid kit formulations is critical to obtaining kits with excellent stability. A thermal gelation method with no sugar treatment and variations in sugar (glucose, maltose, and lactose) was applied to produce these kits. The particle size and radiochemical purity results showed that HSA nanocolloid kits with sugar excipients are more stable than those without sugar. The addition of lactose as an excipient (HSA: lactose 1:10) results in a stable nanocolloid system, allowing for the development of novel lyophilized HSA nanocolloid kit formulations.Graphi...
Source: Journal of Radioanalytical and Nuclear Chemistry - February 16, 2024 Category: Nuclear Medicine Source Type: research

Preliminary study on the application of fluorescence intensity ratio method in fast neutron energy measurement
AbstractA new method for estimating fast neutron energy, based on in situ X-ray fluorescence analysis technology, has been proposed. According to the simulation results, the fluorescence mainly originates from the interactions of intermediate particles protons, electrons, and X/gamma-rays with target atoms. The contribution of fluorescence excited by each type of particle to the overall fluorescence intensity presents distinct characteristics as neutron energy varies. Finally, by analyzing the fluorescence intensity ratios of Ag, Mo, W to Bi as examples, a power function relationship between neutron energy and the fluoresc...
Source: Journal of Radioanalytical and Nuclear Chemistry - February 16, 2024 Category: Nuclear Medicine Source Type: research

Study of phosphate sorption on rendzina soil by heterogeneous isotopic exchange: a biexponential kinetic model
AbstractPhosphate sorption on rendzina soil was studied by P-32 heterogeneous isotopic exchange under a steady-state. There are two types of sorbed phosphate, namely strongly and weakly bonded phosphate, the latter being able to exchange with phosphate (H232PO4−) ions in the soil solution. The experimental kinetic data was not fitted by the one exponential kinetic model. Starting from this observation, a new kinetic model is established by assuming two types of weakly bonded phosphate, which take part in the two parallel exchange processes. A biexponential kinetic equation is obtained, which fits the experimental data mu...
Source: Journal of Radioanalytical and Nuclear Chemistry - February 15, 2024 Category: Nuclear Medicine Source Type: research