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Magnetic alginate supported potassium manganese ferrocyanide for the recovery of uranium from acidic wastewater Radiochim. Acta (IF 1.8) Pub Date : 2024-03-17 Tingting Li, Fang Wang, Liangshu Xia
With the rapid development of the atomic energy industry, the demand for nuclear fuel has risen, while the limited resources of uranium mines make it difficult to meet the needs of the future development of nuclear energy. Expanding sources of uranium acquisition is necessary, and the enrichment and recovery of precious uranium from uranium-containing wastewater is invaluable. By synthesizing alginate
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Technetium-99m radiolabeling through conjugation with l,l-ethylene dicysteine chelator of a trimethoxylated flavone and its bioevaluation in rat with induced C6 glioma tumor as a new cancer diagnostic agent Radiochim. Acta (IF 1.8) Pub Date : 2024-03-16 Maryam Ghalbi Ahangari, Mahdi Moridi Farimani, Mostafa Erfani, Mostafa Goudarzi
Xanthomicrol (4′,5-dihydroxy-6,7,8-trimethoxyflavone) is the main active component of Dracocephalum kotschyi Boiss leaf extract. It has showed selective cytotoxic activity against some cancer cell lines and little effect on human fetal foreskin fibroblast cells used as nonmalignant control. This study aimed to develop 99mTc-labeled xanthomicrol and to evaluate its efficiency as a new tumor imaging
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Development of Dy3+ doped lithium magnesium borate glass system for thermoluminescence based neutron dosimetry applications Radiochim. Acta (IF 1.8) Pub Date : 2024-03-11 Meghnath Sen, Rakesh Shukla, Raman K. Mishra, Nimai Pathak, Vilippalil Sathian, Probal Chaudhury
The manuscript reports the synthesis of Dy3+ incorporated lithium magnesium borate glass by melt quenching technique. FTIR study revealed the presence of both BO3 as well as tetrahedral BO4 units through their characteristic frequencies. Photoluminescence (PL) study of unirradiated samples confirmed the presence of Dy dopant in the ‘+3’ oxidation states from the characteristic emissions at 482, 578
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Development of [64Cu]Cu-BPAMD for PET imaging of bone metastases Radiochim. Acta (IF 1.8) Pub Date : 2024-03-06 Samaneh Zolghadri, Fateme Badipa, Hassan Yousefnia, Zahra Shiri-Yekta
In this study, preclinical evaluation and dosimetric estimation of [64Cu]Cu-BPAMD, as a new bone-seeking agent for PET imaging, was studied. [64Cu]Cu-BPAMD was produced with a specific activity of 8.7 GBq/µmol and radiochemical purity (R.P.) of >98 %. The HA binding results showed the binding of nearly all [64Cu]Cu-BPAMD complex to HA at about 15 mg. Biodistribution studies in the male Syrian rats
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Investigation of the dose-response linearity of guar gum for gamma-ray dosimetry at radiation processing levels using Raman spectroscopy Radiochim. Acta (IF 1.8) Pub Date : 2024-02-22 Shahryar Malekie, Amir Veiskarami
In this experimental work, guar gum powder was exposed to gamma radiation from a 60Co source at absorbed doses of 0, 10, 30, 50, 80, 100, 150 kGy at dose rate of 1.62 Gy/s. Raman spectroscopy was applied to measure the intensity of the samples ranging from of 500–4600 cm−1. The intensity versus Raman shift was evaluated at 3800–4000 cm−1. Then the curve was fitted linearly. The slope of the lines was
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A novel method for evaluating the depletion of veterinary pharmaceuticals using radioisotopes Radiochim. Acta (IF 1.8) Pub Date : 2024-02-15 Yousef Fazaeli, Gholamreza Shahhoseini, Alireza Neisi, James Jacob Sasanya, Parviz Ashtari, Shahzad Feizi
Antimicrobial resistance (AMR) as one of the world’s most pressing public health problems needs immediate attention, because it has the ability to affect the human healthcare, agriculture, and veterinary industries. Despite warnings about overuse and their implications, antimicrobials are overprescribed worldwide for humans and animals, which leads to the promotion of resistant microorganisms such
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Non-destructive assay of plutonium in absence of gamma-ray spectrometry Radiochim. Acta (IF 1.8) Pub Date : 2024-02-14 Sanhita Chaudhury, Ashwani Kumar, Sabyasachi Patra, Rahul Tripathi
Gamma-ray spectrometry-based isotopic composition analysis is a prerequisite for absolute non-destructive assay of Pu by neutron counting or calorimetry. However, gamma-ray spectrometry can be complicated in samples that are heavily shielded or have a high 241Am fraction. Herein, for the absolute non-destructive assay of Pu, a simple yet potent empirical methodology combining neutron multiplicity counting
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Catalytic destruction of oxalate in the supernatant stream generated during plutonium reconversion process Radiochim. Acta (IF 1.8) Pub Date : 2024-02-14 Arvind Prasad, Kadukkappilly S. Vijayan, Ravinuthala V. S. Rao, Desigan Narasimhan, Ananthasivan Krishnamoorty
Plutonium oxalate supernatant requires a treatment step for further recovery of the residual Pu. As the oxalate ion present in the solution poses problems during the recovery of Pu, it needs to be destroyed. In the present work, Mn2+ based catalytic destruction of oxalate ion was studied in detail, as it could minimize the generation of secondary radioactive waste compared to the conventional process
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Measurements of 222Rn exhalation rates, effective 226Ra contents, and radiological risks from geological samples of Kopili Fault Zone and gneissic complex of Shillong Plateau, India Radiochim. Acta (IF 1.8) Pub Date : 2024-02-14 Pranjal Protim Gogoi, Sarat Phukan, Debajyoti Barooah
This report unveils the outcomes of measurements of 222Rn exhalation rates, effective 226Ra content, and the annual effective dose for rocks and soil collected in the vicinity and far from the seismically active Kopili Fault Zone, India. LR-115 (II) nuclear track detector has been used to investigate radiation exposure in the seismically active fault zone and gneissic complex of the Shillong Plateau
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Alpha-hydroxyisobutyric acid-assisted solid-liquid chromatography for the separation of lutetium-177 from neutron-irradiated natural ytterbium Radiochim. Acta (IF 1.8) Pub Date : 2024-02-14 Aulia Arivin Billah, Kukuh Eka Prasetya, Fany Triyatna, Daya Agung Sarwono, Abidin Abidin, Fernanto Rindiyantono, Maiyesni Maiyesni, Miftakul Munir, Indra Saptiama, Rien Ritawidya, Agustino Zulys
The production method of no-carrier added Lutetium-177 (177Lu) was developed from a neutron-activated natural ytterbium (Yb) using column chromatography separation method. Dowex W50 X8 resin and a combination of alpha-hydroxyisobutyric acid (α-HIBA) and hydrochloric acid (HCl) were used as column filler and eluent, respectively. HCl increased the desorption and separation between 177Lu and Yb at a
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210Pb dating and neutron activation analysis of the Sundarban mangrove sediments: sedimentation rate and metal contamination history Radiochim. Acta (IF 1.8) Pub Date : 2024-02-14 Mohammad Amirul Islam, Shaiful Kabir, Ali Arman, Untung Sugiharto, M. Moinul Islam, Mohammad Belal Hossen
In this study, alpha spectrometry and neutron activation analysis were applied to assess the mass accumulation rate, contamination history, and ecological risk of the Sundarban mangrove sediments. The mass accumulation rates of sediments using 210Pb dating determined for the first time in this area ranged from 0.068 to 3.20 kg m−2 y−1, with an average of 0.61 kg m−2 y−1. The contamination history of
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Activation cross sections for the formation of 51Cr and 52,54Mn in interactions of deuterons with iron Radiochim. Acta (IF 1.8) Pub Date : 2024-02-14 M. Mehedi Hasan, M. Shuza Uddin, A. Kumer Chakroborty, M. Shamsuzzoha Basunia
Excitation functions for the formation of the radionuclides 51Cr, 52Mn and 54Mn via deuteron-induced activation of natural iron were measured up to deuteron energies of 35 MeV. The available experimental databases of the reaction products 51Cr, 52Mn and 54Mn were extended and compared with the nuclear model calculations using the TALYS code. The model calculations reproduce our measured data after
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Evaluating sustainability of Bhuj aquifer system, Western India using nuclear dating techniques Radiochim. Acta (IF 1.8) Pub Date : 2024-02-14 Annadasankar Roy, Uday Kumar Sinha, Bharatkumar Hathi, Sitangshu Chatterjee, Diksha Pant, Hemant Mohokar, Ajay Jaryal, Harish Jagat Pant, Dipankar Saha, Ratan Jain, Tirumalesh Keesari
Increasing population, food demands and climatic stressors pose an imminent threat to groundwater sustainability in regional aquifer systems globally. Limited availability of surface water and erratic/uncertain rainfall necessitates preservation of groundwater resources, which form reliable fresh water reserves in most of the arid regions. Bhuj Sandstone aquifer is one such fresh groundwater systems
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Nanocrystalline Ce(OH)4-based materials: ruthenium selective adsorbent for highly alkaline radioactive liquid waste Radiochim. Acta (IF 1.8) Pub Date : 2024-02-13 Jayaprakasam Selvakumar, Kumari Anshul, Padala A. Nishad, Bhaskarapillai Anupkumar, Subramanian Srinivasan, Nethapakkam R. Jawahar, Appadurai L. Rufus, Jayantha K. Gayen, Tulasi V. Krishna Mohan
Cerium hydroxide, Ce(OH)4 (Ce), has been synthesised and assessed as a Ru-selective adsorbent for treating alkaline radioactive liquid waste. Infrared spectroscopy, thermal analysis, scanning electron microscopy, and energy-dispersive X-ray spectroscopy investigations confirmed the successful formation of nanocrystalline Ce from Ce(NO3)3·6H2O. Selective removal of 106Ru from the ion-exchange effluent
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Radiochemical and chemical characterization of fuel, salt, and deposit from the electrorefining of irradiated U-6 wt% Zr in hot cells Radiochim. Acta (IF 1.8) Pub Date : 2024-02-13 Dwarapudi Bola Sankar, Rajeswari Seshadri, Kalaiyarasu Thirunavukkarasu, Gurudas Pakhui, Jakkula Siva Brahmaji Rao, Suranjan Bera, Balija Sreenivasulu, Kumaresan Radhakrishnan, Periasamy Manoravi, Venkataraman Jayaraman
Metal fuels are considered as the promising candidates for future fast breeder reactors. Pyro-chemical reprocessing is the ideal method for reprocessing spent metallic fuels due to the inherent process advantages. Electrorefining run was demonstrated in a hot cell facility with irradiated U-6 wt% Zr alloy at 500 °C using LiCl–KCl eutectic melt. In order to understand the behavior of the actinides and
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Preparation of [64Cu]Cu–NOTA complex as a potential renal PET imaging agent using 64Cu produced via the direct activation route Radiochim. Acta (IF 1.8) Pub Date : 2024-02-13 Sourav Patra, Sachin Jadhav, Priyalata Shetty, Khajan Singh, Ardhi Rajeswari, K. V. Vimalnath, Avik Chakraborty, Rubel Chakravarty, Sudipta Chakraborty
Glomerular filtration rate (GFR) could be determined more accurately using renal positron emission tomography (PET) than conventional gamma imaging. Copper-64 [T ½ = 12.7 h, E β+ (max) = 653 keV, β+ branching ratio = 17.8 %, 1346 keV γ-photon (0.54 %), EC (43.8 %), β− emission (38.4 %)] in the form of its hydrophilic complex with 1,4,7-triazacyclononane-1,4,7-triacetic acid (NOTA) is proposed as a
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Excitation functions of alpha-particle induced nuclear reactions on nat Sn Radiochim. Acta (IF 1.8) Pub Date : 2024-02-13 Mahesh Choudhary, Namrata Singh, Aman Sharma, Aman Gandhi, Mahima Upadhyay, Rebecca Pachuau, Sandipan Dasgupta, Jagannath Datta, Ajay Kumar
Excitation functions of alpha-particle induced nuclear reactions on nat Sn have been presented in the 11–40 MeV energy range. In the present study, the stacked-foil activation technique followed by offline gamma-ray spectrometry was used to measure the production of 119Te, 121Te, 122Sb and 126Sb from alpha-particle induced reactions on nat Sn. The TALYS nuclear code was used to calculate the theoretical
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Zirconium sponge production: an integrated approach for chemical characterization of process intermediates using ICP-OES Radiochim. Acta (IF 1.8) Pub Date : 2024-02-13 Yarasi Balaji Rao, Sirivella N. V. M. S. Gupta, Putta V. Nagendra Kumar, Dinesh Srivastava
The present paper discusses about the method developed for complete chemical characterization of Zirconium Washed and Dried Frit (WDF) and Reactor Grade ZrO2 powder which includes nonmetallic element sulphur using Inductively Coupled Plasma Optical Emission Spectrometer (ICP-OES). Studies have been carried-out on several important aspects of method development such as effect of matrix on determination
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Reverse phase liquid chromatographic method for the measurement of uranium in process stream solutions from uranium extraction facility Radiochim. Acta (IF 1.8) Pub Date : 2024-02-13 Yarasi Balaji Rao, Shehanaz Bano, Putta V. Nagendra Kumar, Dinesh Srivastava
The present paper describes a simple method for the determination of uranium in uranium process stream solutions by reversed-phase liquid chromatographic method using C18 column, mixture of α-hydroxy isobutyric acid and methanol as eluent and flow-through spectrophotometer detector. This method has an advantage that interfering elements like rare-earth elements do not retain on the column and elute
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Total chemical synthesis of PSMA-617: an API for prostate cancer endotherapeutic applications Radiochim. Acta (IF 1.8) Pub Date : 2024-02-13 Kalangattu Sundaran Ajish Kumar, Anupam Mathur
Synthesis of PSMA-617, a peptide based ligand used in the preparation of nuclear medicine, 177Lu-PSMA-617, for the treatment of prostate cancer, is demonstrated in 6 steps, starting from appropriately protected amino acid building blocks. A solution phase Boc-strategy was adopted for the synthesis of peptide, wherein deprotection of carbamate group using HCl (g), was employed as the key step. The synthesis
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Theoretical analysis of light and heavy-ion induced reactions: production of medically relevant 97Ru Radiochim. Acta (IF 1.8) Pub Date : 2024-02-13 Malvika Sagwal, Moumita Maiti
97Ru is a key radionuclide sought for diagnostic imaging due to its low-energy and intense γ-rays of 215.7 keV and 324.5 keV. New reaction routes to produce this radionuclide are constantly being investigated. A crucial step in carrying out such reactions is a reliable beforehand estimate of the production cross section of radionuclide and optimization conditions through robust theoretical frameworks
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An LSC approach for tritium determination in gaseous mixtures optimized with respect to handling, reaction parameters and miniaturization towards microfluidic analysis Radiochim. Acta (IF 1.8) Pub Date : 2024-02-12 Alexandra Becker, Holger Lippold, Jantje Pauline Bäcker, Detlev Belder, Cornelius Fischer
The handling and analysis of gaseous tritium is of interest for hydrogen isotope separation experiments. In this work, we present an easy-to-handle setup for catalytic oxidation to HTO, recovering all of the initially dosed gaseous tritium as determined by LSC, using CuO as a catalyst at a reaction temperature of 900 °C. Aiming to reduce cocktail waste, the LSC determination was downscaled to a microfluidic
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Application of thin boron deposit by electrophoresis as neutron detectors Radiochim. Acta (IF 1.8) Pub Date : 2024-02-12 Mohamed Fares, Mohammed Messaoudi, Mohamed Yacine Debili, Kassida Negara
Detecting nuclear radiation presents a distinctive challenge, particularly with neutrons, which are neutral particles. The method of direct detection involves the utilization of a converter material, acting as an intermediary. Boron plays a pivotal role in this process, reacting with thermal neutrons to generate alpha particles and lithium, with a notable energy release of 2.314 MeV during the 10B
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Observations regarding the synthesis and redox chemistry of heterobimetallic uranyl complexes containing Group 10 metals Radiochim. Acta (IF 1.8) Pub Date : 2024-02-09 Emily R. Mikeska, Natalie M. Lind, Alexander C. Ervin, Celine Khalife, Joseph P. Karnes, James D. Blakemore
Literature reports have demonstrated that Schiff-base-type ligands can serve as robust platforms for the synthesis of heterobimetallic complexes containing transition metals and the uranyl dication (UO2 2+). However, efforts have not advanced to include either synthesis of complexes containing second- or third-row transition metals or measurement of the redox properties of the corresponding heterobimetallic
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Incorporation of phytic acid into reed straw-derived hydrochar for highly efficient and selective adsorption of uranium(VI) Radiochim. Acta (IF 1.8) Pub Date : 2024-02-08 Hongtao Xia, Yuting Liu, Yang Wang, Zihao Feng, Qi Ren, Jianqi Lv, Yang Li, Yanjun Du, Yun Wang
An innovative phytic acid modified reed straw-derived hydrochar composite (PA-C-RBC) was prepared by using inexpensive reed straw and non-toxic phytic acid for the removal of uranium(VI) from aqueous environment. Several characterization results showed that PA-C-RBC was rough and porous with a large number of hydroxyl, carboxyl, and phosphate groups. The uranium(VI) adsorption process by PA-C-RBC conformed
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Characterization of glass composite material by pressureless sintering of soil and its application to uranium contaminated soil as a waste form Radiochim. Acta (IF 1.8) Pub Date : 2024-01-24 Jaewoong Hwang, Jaseung Koo, Kenyoung Lee
When operating and dismantling a nuclear facility that handles uranium, the surrounding soil may be contaminated, emphasizing the need for appropriate treatment and disposal methods for soil waste. This study assessed high-temperature sintering technology for uranium contaminated soil waste to overcome limitations in existing decontamination methods and the volume increase associated with current solidification
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Determination of natural radionuclides and heavy metal concentrations in the groundwater and adjacent areas of the Kattakurgan reservoir, Uzbekistan Radiochim. Acta (IF 1.8) Pub Date : 2024-01-11 Ulugbek Tukhtaev, Shakhboz Khasanov, Jaloliddin Fayzullayev, Akmal Safarov, Bayramali Togaev, Seyedkarim Afsharipour
We conducted a comprehensive assessment of the Kattakurgan reservoir, alongside adjacent wells and boreholes, to measure the concentrations of natural radionuclides, heavy metals, and associated radiological hazards. Using NaI(Tl) crystal scintillation gamma spectrometers, we determined radionuclide levels in water and sediment. Inductively coupled plasma mass spectrometry (ICP-MS) was employed for
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CaO-enhanced polyester for safety: experimental study on fabrication, characterization, and gamma-ray attenuation Radiochim. Acta (IF 1.8) Pub Date : 2024-01-11 Mohammad W. Marashdeh, Karem A. Mahmoud
The current work deals with studying the influence of cheap, widespread CaO on improving the γ ray-protection capacity of the lightweight, sealing polyester. Therefore, polyester composites were filled with different concentrations of CaO fillers. The fabricated CaO-reinforced polyester composites’ density ranged between 1.177 g/cm3 and 1.377 g/cm3, when CaO filler concentrations increased between
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Overcoming the obstacle of excess acetonitrile content in the final fluorine-18 radiotracers Radiochim. Acta (IF 1.8) Pub Date : 2024-01-08 Mohammed Al-Qahtani
Acetonitrile is widely used as a solvent in synthesizing various fluorine-18 positron emission tomography (PET) radiotracers. Acetonitrile is classified as a Class II residual solvent, and due to its inherent toxic properties, the quantity of residual acetonitrile in drug products has to be limited. When working under Good Manufacturing Practices (GMP) during the radiosynthesis of a radiotracer, the
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Morphology of uranium oxides reduced from magnesium and sodium diuranate Radiochim. Acta (IF 1.8) Pub Date : 2023-12-26 Aaron M. Chalifoux, Logan Gibb, Kimberly N. Wurth, Travis Tenner, Tolga Tasdizen, Luther W. McDonald
Morphological analysis of uranium materials has proven to be a key signature for nuclear forensic purposes. This study examines the morphological changes to magnesium diuranate (MDU) and sodium diuranate (SDU) during reduction in a 10 % hydrogen atmosphere with and without steam present. Impurity concentrations of the materials were also examined pre and post reduction using energy dispersive X-ray
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Radioactivity of 226Ra, 232Th and 40K in soil in Northwest part of Turkey: assessment of radiological impacts Radiochim. Acta (IF 1.8) Pub Date : 2023-12-13 Selin Özden
The surface soil samples were collected from Northwest Turkey. The activity concentrations of 226Ra, 232Th, and 40K were measured using an HPGe gamma-spectroscopy system. The activity concentrations of 226Ra, 232Th, and 40K in the soils were found to be in the range of 11.78 ± 1.12–43.89 ± 14.94, 3.19 ± 2.01–88.22 ± 0.92, 362.81 ± 5.94–829.27 ± 12.38 Bq kg−1 d.w., respectively. The Surfer program was
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HR GRS-HPGe as NDT method for quantification of uranium and U235 content in process stream samples from UO2 fuel production facilities Radiochim. Acta (IF 1.8) Pub Date : 2023-12-11 Yarasi Balaji Rao, Vinod K. Ray, Putta V. Nagendra Kumar, Dinesh Srivastava
Uranium concentration and uranium isotopic content are two important and critical parameters for any nuclear fuel fabrication facilities. In the present study emphasis has been given on the usage of high resolution gamma ray spectrometric (HR-GRS) technique with HPGe detector for the determination of uranium and 235U content in uranium process stream samples. The work has been carried out with an aim
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Gamma-radiation levels along the main Karakorum thrust area of Northern Pakistan Radiochim. Acta (IF 1.8) Pub Date : 2023-12-07 Mohammad Wasim, Arfan Tariq, Manzoor Ali
In this contribution, the distribution of naturally occurring radionuclides in the area around Main Karakoram Thrust (MKT) in Karakoram Range, North Pakistan is documented. Three natural radionuclides (226Ra, 232Th, and 40K) and one anthropogenic radionuclide (137Cs) were studied for their specific activities in 30 samples. The measurements were made by high resolution gamma-ray spectrometry. The sampling
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Determination of natural and artificial radioactivity levels and radiation hazard indices for soil samples in Kırşehir Radiochim. Acta (IF 1.8) Pub Date : 2023-12-04 Sümeyra Yamçıçıer, Doğan Yaşar
The aim of this study is to create a radiological map of Kırşehir province in Turkey by analyzing the radioactivity levels of soil samples and environmental radiation measurements. 226Ra, 232Th, 40K and 137Cs radionuclides were analysed in soil samples collected from 47 locations using gamma spectrometry with an HPGe detector. According to the results obtained, gamma radioactivity concentration ranges
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Recycling waste polymer packaging materials as effective active carbon porous materials for uranium removal from commercial phosphoric acid Radiochim. Acta (IF 1.8) Pub Date : 2023-11-30 Saber Ibrahim, Ahmed M. Masoud, Mahmoud M. El-Maadawy, Hager Fahmy, Mohamed Taha
Plastic packaging waste is considered a serious threat to the environment due to its non-biodegradable nature. Transforming plastic waste into active carbons using pyrolysis methods could be a valuable option to solve the challenge of plastic waste. Synthesized active carbon was differentiated using zeta potential, particle size, SEM, BET, and DSC. This study also investigates the use of obtained active
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Inorganic composites based on carboxymethyl cellulose: preparation, characterization, sorption, and selectivity behavior for some radionuclides from radioactive solutions Radiochim. Acta (IF 1.8) Pub Date : 2023-11-24 Mohamed Ragab Abass, Maha Ali Youssef, Marwa Ahmed Eid
This work is interested in the sorption and separation of 131Ba, 109Cd, 152+154Eu, and 97Zr from radioactive solutions onto barium molybdenum titanate loaded on carboxy methyl cellulose (BaMoTi@CMC) composites. In this work, different samples of BaMoTi@CMC composites were fabricated by the co-precipitation method and characterized using different analytical tools such as X-ray diffraction (XRD), attenuated
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Production of Auger-electron-emitting 103mRh via a 103Pd/103mRh generator using an anion-exchange resin Radiochim. Acta (IF 1.8) Pub Date : 2023-11-22 Tomoyuki Ohya, Jun Ichinose, Kotaro Nagatsu, Yumi Sugo, Noriko Ishioka, Hiroshi Watabe, Masatoshi Itoh, Katsuyuki Minegishi, Ming-Rong Zhang
Rhodium-103m is one of the most attractive Auger electron emitters for internal radiotherapy. The half-life of 103mRh is relatively short (56.114 min). Therefore, it needs to be produced using a generator for clinical use. Most studies of 103Pd/103mRh generators using anion-exchange resins were carried out over 50 years ago. However, these resins are no longer commercially available. In the present
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Efficient removal of U(VI) from aqueous solution by hydroxyapatite/graphene oxide composite microspheres Radiochim. Acta (IF 1.8) Pub Date : 2023-11-17 Wenjun Wu, Jianlong Wang
Effective treatment of uranium-containing wastewater is of great significance to the sustainable development of nuclear power and the protection of ecological environment. In this study, a highly efficient uranium adsorbent, graphene oxide (GO)/nano-hydroxyapatite (nHA) composite microspheres (nHA@rGO) was synthesized, which could effectively remove uranium from aqueous solution. Under the condition
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Efficient extraction of 68Ge from irradiated Ga–Ni alloy via a novel organic-solvent-free separation procedure Radiochim. Acta (IF 1.8) Pub Date : 2023-11-15 Lingting Xia, Han Wu, Jing Gao, Tianzhen Ye, Long Qiu, Feize Li, Tu Lan, Jijun Yang, Jiali Liao, Ning Liu, Yuanyou Yang
In this work, a gallium–nickel alloy target with a weight percentage ratio of 7:3 was successfully prepared on Cu substrate in a chloride system at room temperature. A novel organic-solvent-free separation procedure based on two columns for extracting 68Ge from irradiated Ga–Ni alloy target with high radionuclidic purity (99.99 %) was developed. By this separation procedure, the recovery of 68Ge is
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Determination of rare earth elements in Algerian bentonites using k 0-NAA method Radiochim. Acta (IF 1.8) Pub Date : 2023-11-06 Lylia Hamidatou, Fahd Arbaoui, Radji Chahra, Hocine Slamene, Kamel Djebli, Mohamed Nadir Boucherit
This work focused the determination of the rare earth elements (REE) in Algerian bentonites named Mos and Mag using k 0-NAA method. Eleven rare earth elements such as Ce, Nd, La, Sc, Sm, Yb, Tm, Ho, Tb, Eu and Lu were determined. Results revealed that the total light REE (LREE) in Mos (168 ppm) is higher than in Mag (68.5 ppm). In addition, the ratio of total LREE (LREE) to the total heavy rare earth
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Sorption behaviour of 137Cs and 152+154Eu onto bentonite phosphate modified with nickel: kinetics, isotherms, and chromatographic column application Radiochim. Acta (IF 1.8) Pub Date : 2023-11-02 Mohamed R. Abass, Sara S. Mahrous, Muhammad S. Mansy
Using batch and column procedures, the present work investigated the sorption behaviour of 137Cs and 152+154Eu by bentonite phosphate modified with nickel (BPN) sorbent. The kinetic data obey pseudo-1st-order for 137Cs and follow pseudo-2nd-order for 152+154Eu. Various sorption isotherm models were used to analyze equilibrium data. The thermodynamic functions reflect an endothermic and spontaneous
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238Pu production: a State-of-the-Art review of NpO2 target fabrication technologies and processing of irradiated targets Radiochim. Acta (IF 1.8) Pub Date : 2023-10-19 Beatriz Acevedo, Karen Van Hecke, Thomas Cardinaels, Marc Verwerft
Space mission beyond the solar system cannot rely on photovoltaic (PV) cells as primary power source, and combinations of PV cells and batteries. For such purpose, Radioisotope Power Systems powered with 238Pu have served well for all flagship space exploration missions since the early Apollo missions until today’s Mars Exploration Program and continue to be the preferred primary energy source for
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Use of gamma radiation for the antioxidant improvement of saffron [Crocus sativus] petal extract Radiochim. Acta (IF 1.8) Pub Date : 2023-10-12 Marzieh Heidarieh, Mahnoosh Parsaeimehr, Najmeh Sheikhzadeh
This in vitro study was conducted to evaluate the impact of gamma-irradiation on the antioxidant activity of the methanolic extracts of Crocus sativus petals. After gamma-irradiation at 5, 10, and 35 kGy doses, Folin-Ciocalteu, aluminum chloride colorimetric methods, Fourier transform infrared spectroscopy (FTIR), and high performance liquid chromatography (HPLC) techniques were deployed to analyze
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Sorption of U(VI) on dolomite in a dilute carbonate solution: behavior investigation and mechanism probe Radiochim. Acta (IF 1.8) Pub Date : 2023-10-12 Xiaoyu Yin, Peng Wu, Yufan Zhao, Shilong Shi, Jun Liu, Feize Li, Jiali Liao, Ning Liu, Yuanyou Yang, Tu Lan
The U(VI) sorption behavior on dolomite was systematically investigated in a dilute carbonate solution using batch technique. The distribution coefficients (K d) increased with the increasing time and temperature, but decreased with the increase of initial U(VI) concentration and ionic strength. As the initial pH increased from 2.0 to 10.5, the K d values first increased and then decreased, mainly
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Dissolution of high burn-up spent nuclear fuel at high-pH Radiochim. Acta (IF 1.8) Pub Date : 2023-10-09 Luis Iglesias, Jakub Kokinda, Daniel Serrano-Purroy, Albert Martínez-Torrents, Ignasi Casas, Joan de Pablo, Frederic Clarens, Javier Giménez
The release of radionuclides from high-burnup spent nuclear fuel (SNF) segments was studied at pH = 13.2 as well as the effect of the presence of calcium and silicon. The aim was to ascertain the dissolution of SNF in solutions corresponding to a high-level nuclear waste repository including concrete in different structural parts. The release of uranium at pH = 13.2 was higher than at pH = 8.4 in bicarbonate
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Extraction of some univalent and divalent cations into nitrobenzene in the presence of calcium ionophore I Radiochim. Acta (IF 1.8) Pub Date : 2023-10-05 Petr Vaňura, Emanuel Makrlík
The stability constants of the Calcium ionophore I (i.e., N,N´ – di[(11′- ethoxycarbonyl) undecyl] – N,N′,4,5 -tetramethyl – 3,6 – dioxaoctane diamide) complexes with Mn+ (Mn+ = Li+, H3O+, Na+, NH4 +, Ag+, K+, Rb+, Tl+, Cs+, Ca2+, Sr2+, Ba2+. Pb2+, Cu2+, Zn2+) in nitrobenzene saturated with water were determined by the extraction method. These constants were found to increase in the series of Cs+ <
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Fabrication, swift heavy ion irradiation, and damage analysis of lanthanide targets Radiochim. Acta (IF 1.8) Pub Date : 2023-10-02 Carl-Christian Meyer, Ernst Artes, Markus Bender, Joachim Brötz, Christoph E. Düllmann, Constantin Haese, Egon Jäger, Birgit Kindler, Bettina Lommel, Marton Major, Maximilian Rapps, Dennis Renisch, Christina Trautmann, Alexander Yakushev
One limiting factor in progress in the discovery and study of new superheavy elements (SHE) is the maximum achievable thickness and irradiation stability of current generation actinide targets. The desired thickness of targets, using full excitation function widths, cannot be achieved with current target technology, especially the widely used molecular plating (MP). The aim of this study was to transfer
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Independent isomeric yield ratios of fission products in the epi-cadmium neutron induced fission of 241Pu Radiochim. Acta (IF 1.8) Pub Date : 2023-09-25 Haladhara Naik, Ram Janam Singh, Srikant Pandurang Dange, Wooyoung Jang
Independent isomeric yield ratios (IR) of 130,132Sb, 131,133Te, 134,136I, 135Xe and 138Cs have been measured in the epi-cadmium neutron induced fission of 241Pu by using an off-line gamma-ray spectrometric technique. The average neutron energy () of the epi-cadmium reactor neutron spectrum is 1.9 MeV. From the IR values, root mean square fragment angular momenta (J RMS) were deduced by using spin dependent
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Experimental measurements of X-rays emission cross sections induced by photons Radiochim. Acta (IF 1.8) Pub Date : 2023-09-21 Nabila Taïbouni, Arezki Amokrane, Tarek Azli, Ben Amor Mohammed Larbi, Naima Belouadah, Khelifa Boukeffoussa, Camelia Yasmine Medour, Hamza Zouad, Mohammed Messaoudi
The energy-dispersive X-ray fluorescence (ED-XRF) technique has been used for measurements of K α , K β , and total K X-rays emission cross sections induced by photons, as well as K-shell fluorescence yields for pure elements with 22 ⩽ Z ⩽ 49. These metals have been irradiated at 59.54 KeV excitation energy from an 241Am annular radioactive source. The characteristic K X-rays emitted by the targets
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Highly efficient uptake of TcO4 −/ReO4 − by functionalized PAFs Radiochim. Acta (IF 1.8) Pub Date : 2023-09-19 Xupeng Zhi, Xinlong Chen, Yinglin Shen, Xiaomin Li, Suliang Yang, Shengdong Zhang
Selective removal of 99TcO4 − from complex radioactive wastewater is a challenging but meaningful task since it is important for both spent fuel reprocessing and 99TcO4 − leakage handling. Here, we synthesized a series of functionalized PAF-1 framework materials, PAF-1-C-N2, PAF-1-N2-C4, PAF-1-IM and PAF-1-PY, by grafting quaternary ammonium, imidazolium and pyridinium onto the PAF framework as active
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First-principles study of the radiolytic degradation of diglycolamides Radiochim. Acta (IF 1.8) Pub Date : 2023-09-12 Bart Verlinden, Karen Van Hecke, Andreas Wilden, Giuseppe Modolo, Koen Binnemans, Thomas Cardinaels, Piotr M. Kowalski
Understanding the degradation mechanisms of organic compounds in an extreme radiolysis induced environment is important for designing efficient organic extractants for the separation of radionuclides from used nuclear fuel. In this paper, we present an in-depth computational chemistry-based molecular level analysis of the radiolytic degradation of diglycolamides, with a focus on structural and thermodynamic
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Investigation into Na and Cs activity coefficients in high salt solutions to support Cs removal in Hanford tank waste Radiochim. Acta (IF 1.8) Pub Date : 2023-09-07 Emily L. Campbell, Amy M. Westesen, Reid A. Peterson
The treatment of Hanford tank waste is one of the most technically challenging environmental cleanup activities for the U.S. Department of Energy to date. To expedite the processing of liquid waste stored in underground tanks in southeastern Washington state, it is necessary to remove the significant dose contributor, 137Cs. Toward this effort, ion exchange with crystalline silicotitanate (CST) has
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Adsorption of Th(IV) ions from aqueous solutions by ZnO functionalized graphene oxide Radiochim. Acta (IF 1.8) Pub Date : 2023-08-09 Ikbal Gozde Kaptanoglu, Sabriye Yusan
Graphene oxide (GO) and zinc oxide (ZnO) were synthesized via the Tour’ and sol-gel methods, respectively. Adsorption potentials of Th(IV) ions were investigated with the functionalization of GO with ZnO nanoparticles (GO-ZnO) and compared with the GO. Studies concerning factors affecting the adsorption process, kinetics, adsorption isotherms, and thermodynamic properties were carried out. In this
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Production cross-section calculations of some strontium isotopes via (p,x) reactions on natural abundance rubidium using different level density models Radiochim. Acta (IF 1.8) Pub Date : 2023-08-02 Mert Şekerci, Hasan Özdoğan, Abdullah Kaplan
The cross-section, a measure of the probability that a nuclear reaction will occur, needs to be calculated properly. The level density model used in the computations is one of several factors which may affect the theoretical value of the cross-section in a nuclear reaction. In this study, it is aimed to investigate the influence of level density models on the cross-section calculations in the production
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Synthesis of 197m/gHg labelled gold nanoparticles for targeted radionuclide therapy Radiochim. Acta (IF 1.8) Pub Date : 2023-07-26 Philipp Droop, Shaohuang Chen, Melissa J. Radford, Elisabeth Paulssen, Byron D. Gates, Raymond M. Reilly, Valery Radchenko, Cornelia Hoehr
Meitner-Auger-electron emitters have a promising potential for targeted radionuclide therapy of cancer because of their short range and the high linear energy transfer of Meitner-Auger-electrons (MAE). One promising MAE candidate is 197m/gHg with its half-life of 23.8 h and 64.1 h, respectively, and high MAE yield. Gold nanoparticles (AuNPs) that are labelled with 197m/gHg could be a helpful tool for
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[18F]Fluoromisonidazole synthesis method: development and optimization by cartridge purification Radiochim. Acta (IF 1.8) Pub Date : 2023-07-20 Maja Chochevska, Marija Atanasova Lazareva, Katerina Kolevska, Maja Velichkovska, Jacek Koziorowski, Emilija Janevik Ivanovska, Bistra Angelovska, Ana Ugrinska
[18F]Fluoromisonidazole ([18F]FMISO) as nitroimidazole derivative with 18F radioisotope is a widely known and studied hypoxia marker for PET imaging. A number of automated synthesis modules and purification strategies for production of [18F]FMISO have been described in recent years. The goal of this work was to develop [18F]FMISO synthesis process with Synthera module with solid phase extraction (SPE)
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Measurement of spectrum-averaged cross sections of the (n,p) and (n,n′) reactions on strontium by fast neutrons of a TRIGA reactor: comparison with integrated data from excitation functions of various data libraries Radiochim. Acta (IF 1.8) Pub Date : 2023-06-30 M. Shuza Uddin, M. Mezbah Uddin, Rahat Khan, M. Mehedi Hasan, M. Asad Shariff, M. Obaidur Rahman, Syed M. Qaim
Integral cross sections of the reactions 84Sr(n,p)84Rb, 86Sr(n,p)86Rb and 87Sr(n,n′)87mSr, over the fast neutron spectrum of a TRIGA reactor above 0.5 MeV, were measured for the first time. The results were used for integral tests of the evaluated excitation functions in the data libraries, ENDF/B-VIII.0, ROSFOND-2010, JEFF-3.3, JENDL-5 and TENDL-2021. The integral measurements are generally consistent
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Assessment of radioactivity of the Sobirsoy reservoir and adjacent areas of the Nurabad district, Uzbekistan Radiochim. Acta (IF 1.8) Pub Date : 2023-06-26 Ulugbek Tukhtaev, Shakhboz Khasanov, Akmal Safarov, Ram Proshad
Reservoirs and artificial channels are vital sources of water for irrigated areas in arid and semi-arid regions. As such, monitoring the radioecological state of these water bodies is crucial for public health and safety. In this study, we aimed to evaluate the radioecological condition of the Sobirsoy reservoir and surrounding areas. We used gamma-spectrometry to measure natural and anthropogenic
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Separation of 71,72As from alpha-particle induced reaction on gallium oxide target using naturally occurring alkaloid caffeine Radiochim. Acta (IF 1.8) Pub Date : 2023-06-25 Sayantani Mitra, Nabanita Naskar, Puja Samanta, Pujarini Banerjee, Susanta Lahiri, Kalpita Ghosh, Punarbasu Chaudhuri
Gallium oxide target was irradiated with 46 MeV alpha-particle beam, which produced 71,72As and 67Ga radioisotopes in the matrix. Separation of radio-arsenics from the bulk gallium target was carried out by caffeine, a nature-resourced reagent, extracted from black tea leaves. 71,72As radionuclides were preferentially attached with caffeine and precipitated with caffeine in 2 M Na2SO4 solution as caffeine
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Cesium ion removal from low-level radioactive wastewater utilizing synthesized cobalt hexacyanoferrate-sand composite Radiochim. Acta (IF 1.8) Pub Date : 2023-06-25 Krishan Kant Singh, Megha Rawat, Jyoti Rawat, Sanjay K Pathak, Surajit Panja, Priya Dimri, Isha Riyal, Himani Sharma, Charu Dwivedi
Here, a novel method of synthesis of a sand-based adsorbent for radioactive Cs+ ion removal is reported. Natural sand has been modified with cobalt hexacyanoferrate (CoHCF) using a simple and effective approach. The detailed physical–chemical characterization of the synthesized adsorbent is carried out using XRD, XPS, UV-visible, FT-IR, ICP-AES and Raman spectroscopy. Cs+ ion batch adsorption studies