Journal of Radioanalytical and Nuclear Chemistry最新文献

{"title":"Occupational exposure assessment following a 99mTc radiopharmaceutical incident","authors":"Akbar Abbasi,&nbsp;Serap Maden,&nbsp;Fatemeh Mirekhtiary","doi":"10.1007/s10967-026-10823-1","DOIUrl":"10.1007/s10967-026-10823-1","url":null,"abstract":"<div><p>Technetium-99 m (^99mTc) is a cornerstone isotope in nuclear medicine diagnostics, utilized globally for over four decades in clinics worldwide. However, accidental spills during handling pose risks of substantial occupational radiation exposure. This study modeled a simulated incident involving vial breakage and footwear contamination using the SkinDose simulator (v 1.3, developed by Renaissance Code Development -RCD). It evaluated both beta and gamma radiation pathways, calculating equivalent dose equivalents and probabilistic risks over exposure durations. Findings revealed that occupational skin dose limits are exceeded within 1–3 h, emphasizing the critical importance of immediate decontamination procedures. Moreover, the results underscore the often-overlooked contribution of gamma radiation in such scenarios. These insights challenge traditional dosimetry models, including VARSKIN, and strongly advocate for the adoption of advanced computational tools to refine and strengthen radioprotection frameworks in nuclear medicine practices.</p></div>","PeriodicalId":661,"journal":{"name":"Journal of Radioanalytical and Nuclear Chemistry","volume":"335 4","pages":"2875 - 2882"},"PeriodicalIF":1.6,"publicationDate":"2026-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147734883","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Leaching characteristics of cementitious matrices containing B-10 enriched boric acid and caesium","authors":"Emanuel Nkotya,&nbsp;Aldo Kitalika,&nbsp;Mojtaba Rostamiparsa,&nbsp;Gabriel Iklaga,&nbsp;Csaba Szabó,&nbsp;Péter Völgyesi,&nbsp;Zsuzsanna Szabó-Krausz","doi":"10.1007/s10967-026-10804-4","DOIUrl":"10.1007/s10967-026-10804-4","url":null,"abstract":"<div><p>This study investigated the development of a new cementitious waste form for stabilizing the radioactive liquid waste containing boric acid enriched in ¹⁰B isotope (¹⁰B-EBA), an advanced neutron-absorbing material used to control nuclear fission reactions in nuclear power plants (NPPs). This was compared with natural boric acid (¹¹B-NBA). Cementitious specimens were prepared using Portland cement (PC), boric acid (BA), and caesium chloride (CsCl). Leachability tests followed the ASTM C1308-08_2017 protocol. The elemental composition of the leachates was determined by inductively coupled plasma atomic emission spectroscopy (ICP-AES), and the mineralogical analysis of the solidified matrices was conducted by X-ray diffraction (XRD). The mineral phase development was also examined using scanning electron microscopy (SEM). The findings show that both caesium incorporation and boron enrichment significantly influence the mineralogy and leaching characteristics of cementitious waste forms. Cement specimens made with NBA showed higher leachability of the main cementitious elements (Ca, Si, S) and B than those made with ¹⁰B-EBA.</p></div>","PeriodicalId":661,"journal":{"name":"Journal of Radioanalytical and Nuclear Chemistry","volume":"335 4","pages":"2743 - 2760"},"PeriodicalIF":1.6,"publicationDate":"2026-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147735007","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Low-temperature gamma irradiation dosimetry for the development of Streptococcus agalactiae Group B vaccine candidate against bovine subclinical mastitis","authors":"Muhamad Yasin Yunus,&nbsp;Adam Tirta Kusuma,&nbsp;Boky Jeanne Tuasikal,&nbsp;Irawan Sugoro,&nbsp;Farah Nurlidar,&nbsp;Totti Tjiptosumirat,&nbsp;Darmawan Darwis","doi":"10.1007/s10967-026-10810-6","DOIUrl":"10.1007/s10967-026-10810-6","url":null,"abstract":"<div><p>Gamma irradiation is a promising method for microbial inactivation in vaccine production, especially for heat-sensitive microorganisms, as it can preserve antigenic structures while ensuring pathogen safety. Because heat-sensitive microorganisms are prone to damage at room or elevated temperatures, low-temperature irradiation is essential to maintain protein integrity. A major challenge in this process is accurate dose measurement, as routine dosimeter calibration is typically performed at room-temperature, which can lead to inaccuracies under freezing conditions. In this study, polymethyl methacrylate (PMMA) dosimeters were calibrated under low-temperature environments maintained by dry ice (solid state of carbon dioxide; − 70 to – 30 °C). The influence of medium density on the absorbed dose was examined by comparing dry ice with wood pellets as a density-equivalent dummy. Dose–response data obtained at room-temperature using wood pellets were interpolated with the low-temperature data (using dry ice) to correct for temperature-dependent variations in dosimeter sensitivity. Results showed a polynomial relationship between dose and absorbance (R² = 0.9996), with sensitivity decreasing above 10 kGy and saturation occurring near 50 kGy. At low-temperatures, dosimeter responses deviated from room-temperature calibration due to effects of dry ice and altered density. Correction was achieved by interpolating absorbance responses between dry ice (low-temperature) and wood pellets (room-temperature density-equivalent medium), and irradiator dose setting must be approximately 17.70% higher than the target dose to compensate for attenuation and achieve the desired absorbed dose. Dose uniformity ratios (DUR) across target doses (2–25 kGy) remained &lt; 1.1, confirming the homogeneity of irradiation and met the requirements of ISO 11137. This method provides a reliable dosimetric framework for low-temperature gamma irradiation, supporting its application in the development of vaccines against heat-sensitive microorganisms such as Group B <i>Streptococcus agalactiae</i>.</p></div>","PeriodicalId":661,"journal":{"name":"Journal of Radioanalytical and Nuclear Chemistry","volume":"335 4","pages":"2797 - 2810"},"PeriodicalIF":1.6,"publicationDate":"2026-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147734961","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Development of 68Ga labeled silver nanoparticles based multimodal formulation for in-vivo diagnosis of Staphylococcus aureus infection in Wistar rats","authors":"Prasad P. Phadnis,&nbsp;Shishu Kant Suman,&nbsp;Chandan Kumar,&nbsp;Lalrinawma Zote,&nbsp;Asheesh Kumar,&nbsp;Jitendra Bahadur,&nbsp;Sutapa Rakshit,&nbsp;Avik Chakraborty","doi":"10.1007/s10967-026-10816-0","DOIUrl":"10.1007/s10967-026-10816-0","url":null,"abstract":"<div><p>We have synthesized ⁶⁸Ga labeled citrate capped silver (Ag) nanoparticles (NPs) based formulation for the diagnosis of <i>Staphylococcus aureus</i> (<i>S</i>. <i>aureus</i>) bacterial infection induced in Wistar rats by employing PET/CT imaging. Initially, citrtate capped Ag NPs were synthesized and characterized by powder XRD, SEM, EDS and TEM analyses as well as by FT-IR and UV–Vis spectroscopy. The TEM analyses revealed their average particle size of ~ 6 nm. The SAED pattern indicated crystallinity of Ag NPs. The DLS mesurements revealed the hydrodynamic size of ~ 30–35 nm and zeta potential of − 26.72 mV ± 1.56 was found. Later, the ⁶⁸Ga labeling was performed through <i>in-situ</i> chelation of ⁶⁸GaCl₃ with carboxylate groups of trisodium citrate, which were capped on Ag NPs. The radiolabeling yield was found to be ~ 80% and the stability evaluation revealed ~ 90% stability in saline and ~ 78% stability in plasma. The <i>in-vivo</i> PET/CT imaging by ⁶⁸Ga labeled Ag NPs formulation could detect inflammation induced by <i>S. aureus</i> infection in Wistar rats which was compared with PET/CT image after administering ¹⁸F-FDG, a clinical probe and it reveled that the presented Ag NPs based formulation is appropriate for PET/CT imaging. Aditionally, the synthesis of the presented test formulation was facile also.</p></div>","PeriodicalId":661,"journal":{"name":"Journal of Radioanalytical and Nuclear Chemistry","volume":"335 4","pages":"2491 - 2504"},"PeriodicalIF":1.6,"publicationDate":"2026-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147734994","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A theoretical study on complexation behaviors and selective separation of Th/U ions with four novel diamide ligands based on 4,5-diazafluorene framework","authors":"Canran Wu,&nbsp;Yun Wang,&nbsp;Xianghe Kong,&nbsp;Xilin Xiao,&nbsp;Changming Nie,&nbsp;Guowen Peng","doi":"10.1007/s10967-026-10801-7","DOIUrl":"10.1007/s10967-026-10801-7","url":null,"abstract":"<div><p>Designing proper ligands for selective and effective separating Th/U is vital for achieving efficient utilization of nuclear fuel in the thorium molten salt reactors (TMSRs). Four novel diamide ligands L_H, L_α, L_β and L_γ were designed based on the pyrazole-substituted 4,5-diazafluorene framework, and the scalar relativistic density functional theory (DFT) calculations were performed to elucidate the complexation behavior and separation selectivity of Th⁴⁺/UO₂²⁺. The results revealed that the interactions between the metal centers and the donor atoms were coordination bonds and dominated by electrostatic and orbital interactions. Thermodynamic calculations indicated that the complexation strength and the coordination reactivity were both enhanced in solvents with higher polarity. Moreover, the β- and γ-substituted hydroxyl groups could improve the coordination ability of the ligands, and all studied ligands exhibited excellent selectivity for Th⁴⁺ over UO₂²⁺, with selectivity coefficient exceeding 99%. These findings may provide a theoretical strategy for the design of high-performance ligands applied to the nuclear fuel cycle of TMSRs.</p></div>","PeriodicalId":661,"journal":{"name":"Journal of Radioanalytical and Nuclear Chemistry","volume":"335 4","pages":"2691 - 2706"},"PeriodicalIF":1.6,"publicationDate":"2026-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147735080","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"61Ni Mössbauer Spectroscopy on Hofmann-type complex {Fe(Ethyl isonicotinate)2[Ni(CN)4]}, {Fe(Allyl isonicotinate)2 [Ni(CN)4]}","authors":"Kosuke Kitase,&nbsp;Takafumi Kitazawa,&nbsp;Shinji Kitao,&nbsp;Takumi Kubota,&nbsp;Yasuhiro Kobayashi,&nbsp;Makoto Seto","doi":"10.1007/s10967-026-10820-4","DOIUrl":"10.1007/s10967-026-10820-4","url":null,"abstract":"<div><p>Spin crossover (SCO) is a reversible transition between high-spin (HS) and low-spin (LS) states. Hofmann-type complexes represent an important class of coordination polymers exhibiting this phenomenon. Mössbauer spectroscopy is a valuable tool for elucidating the local electronic and structural environments of specific elements. However, studies of Hofmann-type complexes using Mössbauer spectroscopy have primarily focused on ⁵⁷Fe, whereas investigations involving other elements remain limited. Herein, we synthesized two complexes, {Fe(Ethyl isonicotinate)₂[Ni(CN)₄]} and {Fe(Allyl isonicotinate)₂[Ni(CN)₄]}, and investigated them using ⁶¹Ni Mössbauer spectroscopy. The Mössbauer spectra suggest a square-planar coordination geometry for the Ni sites and reveal structural flexibility around the Ni centers.</p></div>","PeriodicalId":661,"journal":{"name":"Journal of Radioanalytical and Nuclear Chemistry","volume":"335 4","pages":"2869 - 2874"},"PeriodicalIF":1.6,"publicationDate":"2026-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147734899","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Bioleaching versus chemical leaching of low-grade carbonaceous-siliceous-argillaceous uranium ore in column reactors","authors":"Xuegang Wang,&nbsp;Shuo Sun,&nbsp;Xuefan Wang,&nbsp;Jian Wang,&nbsp;Zhongkui Zhou,&nbsp;Zhanxue Sun","doi":"10.1007/s10967-026-10812-4","DOIUrl":"10.1007/s10967-026-10812-4","url":null,"abstract":"<div><p>As the demand for nuclear energy grows, developing efficient and eco-friendly uranium extraction technologies for complex low-grade ores has increasingly important. This comparative study shows that bioleaching outperforms sodium chlorate-based chemical leaching in column leaching of low-grade carbonaceous-siliceous-argillaceous uranium ore. Under identical experimental conditions (58 kg of − 30 mm ore, 72-day leaching duration), bioleaching achieved a higher uranium leaching rate (67.71% vs. 59.15%) and lower acid consumption (0.35% vs. 0.58%). Leaching kinetics of both systems are controlled by product layer diffusion. These results demonstrate the efficiency and economic viability of bioleaching, offering guidance for the sustainable processing of such uranium ores.</p></div>","PeriodicalId":661,"journal":{"name":"Journal of Radioanalytical and Nuclear Chemistry","volume":"335 4","pages":"2845 - 2853"},"PeriodicalIF":1.6,"publicationDate":"2026-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147734963","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Release behavior of fluoride ions during the leaching of uranium and thorium from Ta–Nb slag with sulfuric acid and aluminum salts","authors":"Junxin Liu,&nbsp;Jiaai Chen,&nbsp;Daqian Liu,&nbsp;Min Huang,&nbsp;Taoyuan Xiu,&nbsp;Zhirong Liu","doi":"10.1007/s10967-026-10818-y","DOIUrl":"10.1007/s10967-026-10818-y","url":null,"abstract":"<div><p>Tantalum-niobium slags contain high levels of fluorine, particularly in the form of uranium–thorium fluorides. Improper disposal can lead to radioactive environmental hazards. This study investigated the effects of aluminum salt dosage, sulfuric acid concentration, liquid-to-solid ratio, temperature, and leaching time on fluoride release from the slags. Results show that adding aluminum salt promotes fluoride dissolution from uranium–thorium fluorides. However, excess aluminum forms stable fluorine-aluminum complexes, reducing the concentration of free fluoride ions in solution. Kinetic analysis revealed that fluoride release from tantalum slag follows the shrinking core model controlled by internal diffusion. Fluoride release from niobium slag fits a mixed-control model. According to Arrhenius plots, the apparent activation energies were 22.65 kJ/mol for tantalum slag and 37.44 kJ/mol for niobium slag. Furthermore, valuable cryolite was successfully synthesized from the fluorine-containing leachate using aluminum compounds as precipitating agents. This study provides technical guidance for controlling fluorine migration in industrial solid wastes and suggests a potential pathway for resource recovery.</p></div>","PeriodicalId":661,"journal":{"name":"Journal of Radioanalytical and Nuclear Chemistry","volume":"335 4","pages":"2855 - 2867"},"PeriodicalIF":1.6,"publicationDate":"2026-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147734960","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Research on efficient wastewater recycling treatment technology for a leach mining uranium mine in Inner Mongolia","authors":"Qi Xu,&nbsp;Baoan Ren,&nbsp;Bo Cui,&nbsp;Peng Li,&nbsp;Rong Hua","doi":"10.1007/s10967-026-10817-z","DOIUrl":"10.1007/s10967-026-10817-z","url":null,"abstract":"<div><p>In response to the problem of large amount of process wastewater and storage space demand in a uranium mining mine in Inner Mongolia, the Nalinggou expansion test project was taken as the research object. By conducting impurity concentrations in various process water, well washing water, evaporation pool water, and other wastewater, the concentration range of each impurity was determined, and a wastewater classification and classification treatment plan for each process was developed. We have developed a classification and reuse process for resin backwash water, transformation water, and well flushing water, which has increased the wastewater reuse efficiency from 66.4 to 81.6% and reduced the wastewater discharge from the evaporation tank by 81.6%. By calculating the wastewater generated during the operation of industrial projects and adopting a combination of wastewater classification storage, classification reuse, and classification treatment, the efficiency of wastewater reuse can be increased to 85.00%, achieving the goal of efficient wastewater reuse.</p></div>","PeriodicalId":661,"journal":{"name":"Journal of Radioanalytical and Nuclear Chemistry","volume":"335 4","pages":"2883 - 2894"},"PeriodicalIF":1.6,"publicationDate":"2026-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147734884","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sample preparation method for low-level total 129I measurements by ICP-MS","authors":"Christopher J. Thompson,&nbsp;Ji-Hye Seo,&nbsp;Steven R. Baum,&nbsp;Ian I. Leavy,&nbsp;Hansell Gonzalez-Raymat,&nbsp;Holly VerMeulen","doi":"10.1007/s10967-025-10540-1","DOIUrl":"10.1007/s10967-025-10540-1","url":null,"abstract":"<div><p>Trace-level (ng/L) measurements of iodine’s isotopic (¹²⁹I and ¹²⁷I) and chemical species distributions are needed for an accurate understanding of subsurface radioiodine migration at former plutonium production complexes such as the Hanford and Savannah River sites. A previously developed method that uses ion chromatography coupled to inductively coupled plasma mass spectrometry (ICP-MS) can measure speciated forms of ¹²⁹I at levels below the drinking water standard (~ 5.6 ng/L), but an interference from molybdenum (Mo) prevents the assay from quantifying the total ¹²⁹I concentration in many relevant sample matrices. In this work, a preparative cation exchange method was developed to eliminate the Mo interference. The method requires little sample volume, is simple and fast to perform, and was shown to recover 96–99% of ¹²⁹I in test solutions containing approximately 20 µg/L Mo and 2–4 µg/L of either ¹²⁹I⁻ or ¹²⁹IO₃⁻. Method efficacy was further demonstrated by processing 11 groundwater and surface water samples with interfering levels of Mo from the Hanford and Savannah River sites. Total ¹²⁹I concentrations in the processed samples ranged from approximately 20–1175 ng/L and generally agreed well with values independently obtained by radiochemistry methods. The sample preparation method enables quantification of total ¹²⁹I by ICP-MS in complex samples and provides a convenient approach for characterizing radioiodine distributions at contaminated nuclear waste sites.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":661,"journal":{"name":"Journal of Radioanalytical and Nuclear Chemistry","volume":"335 3","pages":"1787 - 1795"},"PeriodicalIF":1.6,"publicationDate":"2026-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10967-025-10540-1.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147631644","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}