Journal of Radioanalytical and Nuclear Chemistry最新文献

{"title":"Characterizing microscale signatures in uranium ore concentrates using electron probe microanalyzer","authors":"Christine F. Chan,&nbsp;Joseph R. Boro,&nbsp;Amy M. Gaffney,&nbsp;Naomi E. Marks,&nbsp;Rachel E. Lindvall,&nbsp;Joseph R. Swider","doi":"10.1007/s10967-026-10814-2","DOIUrl":"10.1007/s10967-026-10814-2","url":null,"abstract":"<div><p>Impurities in uranium ore concentrates (UOCs) serve as forensic signatures of processing history and origin. This study utilizes Electron Probe Microanalyzer (EPMA) to characterize microscale compositional and textural features in individual UOC particles from both commercial and bench-scale production. At the particle scale, multiple internal phases with distinct morphologies, chemical signatures, and stoichiometries are documented. Our data shows that chemical impurities are heterogeneously distributed within single particles and among particles within a sample. These microscale heterogeneities correlate with known processing histories, indicating that microscale signatures of early fuel cycle materials can provide valuable information for nuclear forensic material analysis.</p></div>","PeriodicalId":661,"journal":{"name":"Journal of Radioanalytical and Nuclear Chemistry","volume":"335 4","pages":"2895 - 2914"},"PeriodicalIF":1.6,"publicationDate":"2026-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147734901","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":"Validation of the estimation of 192Ir production rates in wires from natural iridium-platinum in research reactors","authors":"P. Tataje,&nbsp;B. Ticona,&nbsp;S. Daza,&nbsp;Anais Adauto","doi":"10.1007/s10967-026-10783-6","DOIUrl":"10.1007/s10967-026-10783-6","url":null,"abstract":"<div><p>Iridium-192 is a crucial radionuclide, extensively used in brachytherapy for cancer treatment. The accurate estimation of the production rate of ¹⁹²Ir is critical for optimizing the manufacture of brachytherapy sources in nuclear reactors and ensuring their dosimetric quality. A rigorous calculation of this rate makes it possible to define irradiation times, guarantee the activity required at the clinical moment, and reduce variations in production, all of which have a direct impact on therapeutic efficacy. This study evaluates the production rate of ¹⁹²Ir in wires composed of natural iridium-platinum alloys when irradiated in research reactors. The methodology incorporates the Hϕgdhal convention, taking into account neutron flux distribution, cross-section data, self-shielding factor, and resonance integral estimations. Experimental validation is carried out through neutron activation analysis and gamma spectroscopy using a HPGe detector. The results demonstrate a strong correlation between theoretical calculations and experimental measurements, providing a reliable framework for optimizing ¹⁹²Ir production.</p></div>","PeriodicalId":661,"journal":{"name":"Journal of Radioanalytical and Nuclear Chemistry","volume":"335 4","pages":"2915 - 2922"},"PeriodicalIF":1.6,"publicationDate":"2026-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147734904","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 qualification protocols for a coaxial high-purity germanium gamma spectrometer in radiopharmaceutical quality control. Part II: Operational and performance qualification","authors":"Ayoub EL Kamel,&nbsp;Naoual Bentaleb,&nbsp;Kaddour Ben Hamou","doi":"10.1007/s10967-026-10766-7","DOIUrl":"10.1007/s10967-026-10766-7","url":null,"abstract":"<div><p>This study outlines a systematic approach for the operational and performance qualification of a coaxial high-purity germanium (HPGe) gamma spectrometer. Operational qualification (OQ) includes checking the storage tank gauge, restoring the detector’s vacuum, verifying alarms, calibrating the liquid nitrogen level system, and performing energy resolution, peak shape, peak-to-Compton ratio, and relative efficiency. For performance qualification (PQ), identification by energy and period calculation, minimum detectable activity (MDA), and robustness were tested using a sample of an appropriate radiopharmaceutical (¹³¹I). All results complied with manufacturer specifications and international standards, confirming the instrument qualification.</p></div>","PeriodicalId":661,"journal":{"name":"Journal of Radioanalytical and Nuclear Chemistry","volume":"335 4","pages":"2455 - 2469"},"PeriodicalIF":1.6,"publicationDate":"2026-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147734967","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":"Application of quadrupole-inductively coupled plasma-mass spectrometry in the analysis of plutonium content of fast critical assembly fuel disposition","authors":"H. J. Bonilla,&nbsp;T. L. White,&nbsp;D. M. Odell,&nbsp;M. E. Morales-Arteaga,&nbsp;N. G. Wyeth,&nbsp;M. A. Jones","doi":"10.1007/s10967-026-10769-4","DOIUrl":"10.1007/s10967-026-10769-4","url":null,"abstract":"<div><p>In 2014, the United States Department of Energy and the Japan Atomic Energy Agency (JAEA) reached an agreement to have all separated plutonium and highly enriched uranium removed from Japan’s Fast Critical Assembly (FCA) reactor at Tokai. Dissolution of the spent nuclear fuel for waste treatment and disposal successfully began in early 2024 at the Savannah River Site (SRS). Monitoring of plutonium concentration throughout the FCA dissolution process was supported by methodology developed at the Savannah River National Laboratory (SRNL) utilizing a radiologically-contained quadrupole-inductively coupled plasma-mass spectrometer (Q-ICP-MS). As an alternative to multicollector mass spectrometry, a plutonium Isotope Dilution Mass Spectrometry (IDMS) protocol was developed on the Q-ICP-MS and implemented to quantify plutonium in process grab-samples for high throughput material analysis support. The final method uncertainty for plutonium concentration was determined to be ± 0.456% (1-sigma).</p></div>","PeriodicalId":661,"journal":{"name":"Journal of Radioanalytical and Nuclear Chemistry","volume":"335 3","pages":"2317 - 2323"},"PeriodicalIF":1.6,"publicationDate":"2026-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147631623","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":"Planar donor–acceptor conjugated microporous polymer enhancing the removal of TcO\u0000 −4\u0000 \u0000 /ReO\u0000 −4","authors":"Yufei Yue,&nbsp;Jinyang Kang,&nbsp;Jiahui Hang,&nbsp;Lang Chen,&nbsp;Fenglei Wang,&nbsp;Tian Huang,&nbsp;Yuanhua Wang,&nbsp;Yongdong Jin,&nbsp;Chuanqin Xia","doi":"10.1007/s10967-026-10822-2","DOIUrl":"10.1007/s10967-026-10822-2","url":null,"abstract":"<div><p>Photocatalytic reduction has been applied for the removal of TcO<span>\u0000 ⁻₄\u0000 \u0000 </span>/ReO<span>\u0000 ⁻₄\u0000 \u0000 </span> due to the green and eco-friendly advantages, but reports on photocatalytic reduction for TcO<span>\u0000 ⁻₄\u0000 \u0000 </span>/ReO<span>\u0000 ⁻₄\u0000 \u0000 </span> were few, owing to the limited availability of suitable photocatalytic materials. Herein, two different Conjugated Microporous Polymers (CMPs) were constructed between triazine and thienothiophene using vinyl (Vi-TMT-TT) and phenyl (Ph-TBT-TT) groups as linker and were firstly used for the removal of ReO<span>\u0000 ⁻₄\u0000 \u0000 </span>, respectively. Vi-TMT-TT was rich in triazine units with higher density and greater electronegativity, which was more likely to generate more protonation sites and was conducive to the adsorption of ReO<span>\u0000 ⁻₄\u0000 \u0000 </span>. After light exposure, the completely planar framework enhanced the photocatalytic activity of Vi-TMT-TT, achieving photo-enhanced rhenium recovery (92 ± 1)% removal in 100 ppm solutions, pH = 3). By the characterizations such as XPS, pH-zeta, EPR, and combined with DFT calculations, the mechanism was that ReO<span>\u0000 ⁻₄\u0000 \u0000 </span> was firstly adsorbed on the triazine unit and reduced to insoluble Re(IV) by photogenerated single electrons in nitrogen atmosphere. The findings provide new insights into the design of materials for TcO<span>\u0000 ⁻₄\u0000 \u0000 </span>/ReO<span>\u0000 ⁻₄\u0000 \u0000 </span> removal.</p></div>","PeriodicalId":661,"journal":{"name":"Journal of Radioanalytical and Nuclear Chemistry","volume":"335 4","pages":"2923 - 2936"},"PeriodicalIF":1.6,"publicationDate":"2026-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147734905","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":"Investigation of amide-functionalized ZIF-8 for rapid, selective, and efficient uranium extraction","authors":"Fuqiu Ma,&nbsp;Xiaoli Su,&nbsp;Yunyang Gui,&nbsp;Shupeng Ma,&nbsp;Kang Yang,&nbsp;Qizi Wu,&nbsp;Mingbo Ji,&nbsp;Guixiang Wang,&nbsp;Sheng Wu","doi":"10.1007/s10967-026-10835-x","DOIUrl":"10.1007/s10967-026-10835-x","url":null,"abstract":"<div><p>This work explores novel ZIF-8 adsorbents functionalized with -COOH and -NH₂ groups to achieve efficient U(VI) separation. The morphology and other characteristics of the adsorption materials were characterized. The material demonstrated a high equilibrium capacity of 1043 mg/g within 5 min at pH = 4 and an initial uranium concentration of 100 ppm, along with excellent selectivity. The adsorption process was spontaneous and entropy-driven via chemisorption. X-ray photoelectron spectroscopy and Density Functional Theory revealed amide bond formation as the main adsorption mechanism. These findings highlight the potential of this material for U(VI) recovery from waste solutions, offering promising environmental applications.</p></div>","PeriodicalId":661,"journal":{"name":"Journal of Radioanalytical and Nuclear Chemistry","volume":"335 4","pages":"2945 - 2953"},"PeriodicalIF":1.6,"publicationDate":"2026-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147734964","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 comparative study of the gross alpha and beta sample preparation method with a liquid scintillation counter","authors":"Leja Rovan Stiplošek,&nbsp;Sian Patterson","doi":"10.1007/s10967-026-10832-0","DOIUrl":"10.1007/s10967-026-10832-0","url":null,"abstract":"<div><p>Gross alpha and beta (GAB) measurements provide a rapid screening tool for assessing radionuclide contamination in water. This study aimed to establish a sensitive, simple method for low-level GAB detection using a liquid scintillation counter (LSC). Different sample preparation approaches (direct, co-precipitation with Fe(OH)₃, Ca₃(PO₄)₂, MnO₂, and evaporation) were tested on four water samples containing natural and anthropogenic radionuclides from the IAEA 2022 proficiency test. Results, evaluated by recoveries and Zeta-scores, showed preparation methods influence recovery and quenching. Co-precipitation with Ca₃(PO₄)₂ and evaporation performed best, though GAB remains a complementary rather than absolute analytical method, as not all radionuclides can be detected simultaneously.</p></div>","PeriodicalId":661,"journal":{"name":"Journal of Radioanalytical and Nuclear Chemistry","volume":"335 4","pages":"3021 - 3035"},"PeriodicalIF":1.6,"publicationDate":"2026-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10967-026-10832-0.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147734959","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}

{"title":"Measuring the fission yield of Xe-135 for applications","authors":"Nader M. A. Mohamed,&nbsp;D. H. Daher","doi":"10.1007/s10967-026-10794-3","DOIUrl":"10.1007/s10967-026-10794-3","url":null,"abstract":"<div><p>Accurate evaluation of the independent fission yields of mass chain A = 135 isobars is crucial for reactor kinetics, control, and fuel burnup calculations, as these nuclides contribute to the buildup of Xe-135, one of the most dominant neutron poisons in thermal reactors. Significant discrepancies are observed among the evaluated independent fission yields for A = 135 isobars in major nuclear data libraries, including ENDF/B-VIII.1, JEFF-3.3, and JENDL-5. This, in turn, highlights the continuing need for improved evaluation and validation of the A = 135 isobar family. In this study, the independent and cumulative fission yields of the A = 135 isobars, which contribute to the formation of Xe-135, were measured for thermal fission of U-235. This work was carried out within the framework of the Coordinated Research Project (CRP) entitled <i>“Updating Fission Yield Data for Applications”</i>, organized by the International Atomic Energy Agency (IAEA). The measurements were performed using gamma-ray spectrometry of the induced radioactivity in natural UO₂ samples following irradiation in a well-thermalized neutron flux position at the ETRR-2 research reactor. The experimental results were compared with evaluated data from the ENDF/B-VIII.1, JEFF-3.3, and JENDL-5 nuclear data libraries. In addition, the decay branching of I-135 to Xe-135m and Xe-135 was evaluated and discussed.</p></div>","PeriodicalId":661,"journal":{"name":"Journal of Radioanalytical and Nuclear Chemistry","volume":"335 4","pages":"2603 - 2611"},"PeriodicalIF":1.6,"publicationDate":"2026-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147734880","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":"Efficient extraction of radium by DtBuCH18C6: performance and coordination study","authors":"Bingqian Li,&nbsp;Chengyun Fu,&nbsp;Yufang Yan,&nbsp;Mark Julian Henderson,&nbsp;Xinyue Chen,&nbsp;Shan Zhu,&nbsp;Minhao Yan","doi":"10.1007/s10967-026-10827-x","DOIUrl":"10.1007/s10967-026-10827-x","url":null,"abstract":"<div><p>This study proposes a rapid and effective extraction system for the separation of Ba²⁺ from various coexisting ions. Di-tert-butyldicyclohexano-18-crown-6/ dichloromethane (DtBuCH18C6/CH₂Cl₂) rapidly separated 90% of Ba²⁺ (1 M nitric acid solution) by a single-stage extraction step. Furthermore, Barium (Ba) often serves as a non-radioactive surrogate for Radium (Ra), but our findings show that Ra²⁺ chemistry cannot always be predicted using Ba²⁺. Probably because the ionic radius of Ra²⁺ is a little bigger than Ba²⁺, the Ra-DtBuCH18C6 complex retains the coordinated water molecules. Consequently, the (H2O)_<i>x</i>-Ra-DtBuCH18C6 complex is poorly transferred (20%) into the organic solvent.</p><h3>Graphic abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture><span>The alternative text for this image may have been generated using AI.</span></div></div></figure></div></div>","PeriodicalId":661,"journal":{"name":"Journal of Radioanalytical and Nuclear Chemistry","volume":"335 4","pages":"3009 - 3020"},"PeriodicalIF":1.6,"publicationDate":"2026-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147735084","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":"Feature, transfer and radiological risk assessment of natural radionuclides from soil to plants at high background radiation area: a case study ambient of the rare earth mine, Muong Hum, Northern Vietnam","authors":"Van-Loat Bui,&nbsp;Van-Hao Duong,&nbsp;Thi Hong Bui,&nbsp;Duc-Thang Duong,&nbsp;Vu Ngoc Ba,&nbsp;Anh-Hung Vu,&nbsp;Viet-Hoang Tran,&nbsp;Thi Mai Pham,&nbsp;Somsavath Leuangtakoun,&nbsp;Hue Nguyen Thanh Kim","doi":"10.1007/s10967-026-10839-7","DOIUrl":"10.1007/s10967-026-10839-7","url":null,"abstract":"<div><p>This study investigates natural radionuclide contamination in soils and edible plants from the high-background radiation area of Muong Hum, Northern Vietnam. ²²⁶Ra, ²²⁸Ra, and ⁴⁰K activity concentrations in both soils and plants were significantly elevated, with strong species-dependent differences reflecting distinct physiological uptake mechanisms and the predominance of thorium-series isotopes. Total annual effective doses reached 0.46–3.15 mSv y⁻¹ and 35.29% of sites exceeded the 1 mSv y⁻¹. These results indicate that elevated environmental baselines, rather than transfer factors alone, drive total exposure. Further monitoring, species-specific risk assessments, and targeted management strategies are recommended to safeguard food safety and public health.</p></div>","PeriodicalId":661,"journal":{"name":"Journal of Radioanalytical and Nuclear Chemistry","volume":"335 4","pages":"2955 - 2967"},"PeriodicalIF":1.6,"publicationDate":"2026-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147734906","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}