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A study on the adsorption properties of illite for radioactive cesium and strontium for the treatment of contaminated water in nuclear power plant
This study was conducted to confirm the Cs-137 and Sr-90 adsorption properties of illite. In the experimental method, illite was added to Cs-137 and Sr-90 solutions and stirred. And Following the completion of the adsorption reaction, the solid/liquid phase was separated using a centrifuge, and the adsorption rate was calculated by measuring the radioactivity concentration of the separated liquid phase using a gamma nuclide analyzer, Liquid Scintillation Count (LSC). As a result of the experiment, after reacting for 30  min, 94% of Cs-137 was adsorbed. And 84.26% of Sr-90 was adsorbed. (Source: Journal of Radioanalytical ...
Source: Journal of Radioanalytical and Nuclear Chemistry - November 2, 2023 Category: Nuclear Medicine Source Type: research

Assessment of radionuclides activity and radiation level in banana samples collected from Kerala and Delhi NCR
AbstractBanana, a staple food, could be consumed daily for its nutritional value. In the present study, banana samples were collected from Kerala and Delhi NCR and gross beta-gamma activities (Bq  kg−1) were estimated in order to understand the contribution of radiation levels to human body due to consumption of banana. Activities of radionuclides such as40K and232Th in banana samples were measured using gamma ray spectrometry. Effective dose rate by ingestion to an individual from banana consumption was determined and results were compared with the effective dose rate to general public by International Commission on Ra...
Source: Journal of Radioanalytical and Nuclear Chemistry - November 2, 2023 Category: Nuclear Medicine Source Type: research

Study on the radon adsorption capability of low-background activated carbon
In this study, using self-developed devices, we screened and identified a new kind of low-background AC from Qingdao Inaf Technology Company that has very high Radon adsorption capacity. By adjusting the average pore size to 2.3  nm, this AC demonstrates a radon adsorption capacity of 2.6 or 4.7 times higher than Saratech or Carboact activated carbon under the same conditions. (Source: Journal of Radioanalytical and Nuclear Chemistry)
Source: Journal of Radioanalytical and Nuclear Chemistry - November 1, 2023 Category: Nuclear Medicine Source Type: research

A new fast screening method for estimating building materials hazard indices with correlated inputs
AbstractIn this work we investigate a new fast screening method for estimation of chosen hazard indices (HI) using correlated inputs dedicated for small 3.00  g samples using a novel μDOSE. The system detects α and β particles separately, along with220Rn/216Po,219Rn/215Po,212Bi/212Po and214Bi/214Po decay pairs. Four separate decay pairs along with α and β particle count rates are used to quantify decay chains. The excess β count rates is used to quantify the40K radioactivity. This provides radionuclide estimates that are correlated —and this correlation is taken into account in calculating hazard indices with thei...
Source: Journal of Radioanalytical and Nuclear Chemistry - November 1, 2023 Category: Nuclear Medicine Source Type: research

Effect of wildfire on soil element concentrations in Mediterranean T ürkiye
AbstractThe effect of the North Adrasan, Kumluca wildfire in 2016 on soil element concentrations has been evaluated. Samples were analyzed by neutron activation analysis for As, Ca, Co, Cr, Fe, K, Mg, Mn, Ni, V, and Zn. The main findings of this study were as follows: (1) Co, Cr, Fe, Mg, Mn, Ni, and Zn were higher in burned soils, (2) Cr (up to 9000  mg kg−1) and Ni (up to 3440  mg kg−1) were the elements that increased the most noticeably in burned soils. The results proposed that wildfires could potentially operate as a source of environmental contamination. (Source: Journal of Radioanalytical and Nuclear Chemistry)
Source: Journal of Radioanalytical and Nuclear Chemistry - October 31, 2023 Category: Nuclear Medicine Source Type: research

Variation of soil gas 222Rn/220Rn concentration ratios along the P ınarbaşı segment of İzmir fault
This study also discusses the usability of the222Rn/220Rn ratio as a geodynamic precursor. (Source: Journal of Radioanalytical and Nuclear Chemistry)
Source: Journal of Radioanalytical and Nuclear Chemistry - October 31, 2023 Category: Nuclear Medicine Source Type: research

Sampling, characterization, method validation, and lessons learned in analysis of highly activated stainless steel from reactor decommissioning
AbstractCharacterisation of activated reactor components is a multifaceted effort, which include both experimental work and activation calculations which together form a comprehensive characterisation approach. However, both the experimental work and activation calculations have their constraints and uncertainties. This work presents the characterisation of a highly activated stainless steel pipe including sampling planning, sampling, sub-sampling, elemental and radionuclide analyses, and activation calculations.55Fe,63Ni and60Co analyses were carried out in a trilateral intercomparison exercise and the results were compar...
Source: Journal of Radioanalytical and Nuclear Chemistry - October 30, 2023 Category: Nuclear Medicine Source Type: research

99mTc generator using molybdenum nanoparticles
AbstractA novel99mTc generator was proposed herein using nanoparticles consisting of natural Mo and an alumina column for99mTc scintigraphy.99mTc was obtained from99Mo decay produced via the irradiation of nanoparticles consisting of natural Mo with bremsstrahlung γ-rays using a 30 MeV electron beam. The irradiated nanoparticles were placed in an alumina column, and the99mTc daughter from99Mo decay was separated by the removal of the ion-exchanged water or saline. This separation procedure was repeated at regular intervals for one week. The maximum separation yield of99mTc was 14.4  ± 0.7%, which is sufficiently hig...
Source: Journal of Radioanalytical and Nuclear Chemistry - October 28, 2023 Category: Nuclear Medicine Source Type: research

Determination of age, isotopic ratios, and elemental impurities in nuclear materials by single quadrupole ICP-MS
AbstractIn the context of the Collaborative Materials Exercise CMX-7 organized by the Nuclear Forensics International Technical Working Group (ITWG), four sample of uranium materials were analysed by IFIN-HH, Romania. The presented work is focused on presenting the analytical process of adapting a SQ ICP-MS such that to be used for determining fingerprints of the nuclear materials of interest. The “in-house” protocol developed made possible the determination of the uranium isotopic ratio of the samples without the use of chemical separation and also to determine the concentration of the trace elements. The age determin...
Source: Journal of Radioanalytical and Nuclear Chemistry - October 26, 2023 Category: Nuclear Medicine Source Type: research

The effect of face masks on the filtration rate of Radon (222Rn) gas and its progeny in breathing air
AbstractThe blocking effect of222Rn gas and its progeny by various face masks has been determined using a measurement system with a parallel AlphaGUARD detector. The theoretical approach of diffusion rate for different particle sizes was calculated. The filtering effect of the different masks followed the order N99  >  surgical >  N95 >  double cloth >  double cellulose >  cloth >  cellulose masks, respectively. Overall the blocking effect percentage ranged between 7.65 and 22.66%. The study indicated that the effect of a mask with high quality in filtering the gas of222Rn and its ...
Source: Journal of Radioanalytical and Nuclear Chemistry - October 26, 2023 Category: Nuclear Medicine Source Type: research

Assessment of human health risk due to heavy metals accumulation through marine fish consumption in Andhra Pradesh
AbstractFor the present study, two marine fish speciesAriomma indica andDasyatus bleekeri were collected from Visakhapatnam and Kakinada harbours, Pudimadaka, and Bheemili that lie along the Andhra Pradesh coast. The concentrations of As, Cd, Cu, Fe, Mn, Se, and Zn in the muscle tissues were determined by using EDXRF. The Estimated daily intake of those metals was evaluated and found to be higher than the reference dose levels. The calculated values of Target hazard quotient and Hazard index of those metals indicate no potential risk. Target cancer risk due to accumulation of As and Cd was determined and found to be in the...
Source: Journal of Radioanalytical and Nuclear Chemistry - October 26, 2023 Category: Nuclear Medicine Source Type: research

Phase investigation of uranium –vanadium alloy using multiple techniques
AbstractThe Israeli National Nuclear Forensics Laboratory (INNFL) investigated four unknown samples during the Collaborative Material Exercise 7 (CMX-7). The samples, identified as depleted uranium, were marked ES-1 to ES-4. ES-2 isotopic composition (0.200  ± 0.004% U-235) was different from the other samples (0.300 ± 0.003% U-235). ES-2 phase exhibited characteristics similar to metallic crystalline uranium with its appearance and assay. However, its density (16.9 ± 1.7 g/cm3) deviated significantly from metallic uranium (19.1  g/cm3). A series of analyses indicated that vanadium was present (app. 3000 ...
Source: Journal of Radioanalytical and Nuclear Chemistry - October 25, 2023 Category: Nuclear Medicine Source Type: research

Ultrathin nickel hydroxide nanosheets decorated carbon nanotubes for electrochemical detection of uranyl ion
AbstractThe rapid detection of uranium in water environment is of great significance for water purification and uranium recovery. In this work, ultrathin nickel hydroxide (Ni(OH)2) nanosheets was in-situ growth on carbon nanotubes (CNTs) to form Ni(OH)2@CNTs electrode for uranyl ion (UO22+) detection. The as-prepared Ni(OH)2@CNTs shows good sensitivity in the electrolyte containing UO22+ with the limit of detection of about 8.603  ppb. Moreover, the Ni(OH)2@CNTs also exhibits significant selectivity for UO22+ in complex wastewater with several interfering cations and anions. This work provides a novel Ni(OH)2@CNTs electr...
Source: Journal of Radioanalytical and Nuclear Chemistry - October 25, 2023 Category: Nuclear Medicine Source Type: research

Assessment of natural radioactivity in soil and water in the upper Himalayas region along the Manali –Leh highway, India
This study represents the findings of the measurement of natural radioactivity in soil and water samples collected from the upper Himalayas region along the Manali –Leh Highway. The activity concentration values of terrestrial radionuclides in soil samples are measured using an n-type HPGe detector. The radiological hazards are also estimated through the evaluation of radium equivalent activity (Req), external and internal hazard index (Hex, Hin), alpha index (Iα), gamma index (Iγ), air absorbed dose, and indoor and outdoor effective dose. The level of Uranium in surface and ground water samples collected from the regi...
Source: Journal of Radioanalytical and Nuclear Chemistry - October 24, 2023 Category: Nuclear Medicine Source Type: research

Considerations on premises of recent ( & lt;  120 years) sedimentation rate models with unsupported 210Pb: a study case of sediment cores from mud shelf depocenters
This study examines the impact of the constant sedimentation —CS premise on sedimentation rates, mass accumulation rates and age-depth results obtained from unsupported210Pb models. The investigation is based on vertical profiles of210Pb,226Ra,228Ra,40K, and137Cs measured through gamma spectrometry from seven sediment cores collected from the coastal region of southern Brazil. This region is known for harboring mud shelf depocenters. The mean sedimentation rate in the study area was estimated to be between 0.33 and 0.58  cm yr−1. The geographical disposition of the sampling sites allowed the identification of distinc...
Source: Journal of Radioanalytical and Nuclear Chemistry - October 24, 2023 Category: Nuclear Medicine Source Type: research