Journal of Radioanalytical and Nuclear Chemistry最新文献

{"title":"A study on measuring iron ore slurry using a built-in PGNAA device","authors":"Pingkun Cai,&nbsp;Jiatong Li,&nbsp;Zhen Li,&nbsp;Daqian Hei,&nbsp;Wenbao Jia,&nbsp;Dehui Zhang,&nbsp;Lian Chen,&nbsp;Can Cheng","doi":"10.1007/s10967-026-11108-3","DOIUrl":"10.1007/s10967-026-11108-3","url":null,"abstract":"<div><p>Prompt Gamma Neutron Activation Analysis (PGNAA) online analyzers are widely utilized for large-volume industrial materials. In this work, a built-in PGNAA device was used to carry out measurement experiments on iron ore slurry samples. Single-peak analysis and full spectrum analysis were separately adopted to analyze the gamma spectra of iron ore slurry, and the neutron self-shielding correction method with the H peak as internal standard was used for spectral analysis. The library-least-squares (LLS) method combined with leave-one-out cross-validation (LOOCV) method and independent validation dataset were applied for full spectrum analysis. After correction, the mean absolute error (MAE), the mean absolute percentage error (MAPE), the root mean square error (RMSE), relative standard deviation (RSD) and the type A standard relative uncertainties U_r(A) of detection results for elements including Fe, H, Si and Ca were significantly optimized, and elemental analysis data exhibited excellent measurement accuracy and repeatability. The above results verify that the built-in PGNAA device is capable of satisfying the requirements for on-line measurement of iron ore slurry samples.</p></div>","PeriodicalId":661,"journal":{"name":"Journal of Radioanalytical and Nuclear Chemistry","volume":"335 9","pages":"6229 - 6239"},"PeriodicalIF":1.7,"publicationDate":"2026-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149023070","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":"Gamma photon interaction and radiosterilization compatibility of three anticancer drugs: an MCNPX-based assessment with complementary UV photostability screening","authors":"Zehra Üstün,&nbsp;Ümit Kara,&nbsp;Veli Çapali,&nbsp;Abdelmoneim Saleh","doi":"10.1007/s10967-026-11102-9","DOIUrl":"10.1007/s10967-026-11102-9","url":null,"abstract":"<div><p>Gamma photon interaction behaviour of three structurally distinct anticancer drugs (Pemetrexed, Capecitabine, and 6-Mercaptopurine) was computationally characterized using MCNPX Monte Carlo simulation to provide preliminary data relevant to radiosterilization considerations. The effective atomic number (Z_eff), mass attenuation coefficient (μ/ρ), and half-value layer (HVL) were computed across the 0.015–15 MeV range. In the low-energy photon region, 6-Mercaptopurine exhibited the highest gamma interaction potential owing to its high sulfur content, whereas Capecitabine showed the lowest; the interaction parameters of the three compounds converge near the Co-60 sterilization energy range. UV photostability data were examined as a complementary, independent descriptor, reported half lives indicated higher photostability for Capecitabine (t1/2 ≈ 24h) and lower photostability for 6-Mercaptopurine (t1/2 ≈ 5.5h). The two descriptor sets reflect distinct physical mechanisms and are not interpreted as predictive. The proposed MCNPX-based workflow offers a cost-effective computational approach for preliminary radiological characterization of pharmaceutical compounds.</p></div>","PeriodicalId":661,"journal":{"name":"Journal of Radioanalytical and Nuclear Chemistry","volume":"335 9","pages":"6143 - 6154"},"PeriodicalIF":1.7,"publicationDate":"2026-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149023097","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":"Reactor production and recovery of theranostic 64+67Cu radioisotopes from natural zinc target using a newly synthesized Zn@chitosan@diallylamine composite","authors":"Mohamed A. Gizawy,&nbsp;Magdy Khalil,&nbsp;Nader M. A. Mohamed","doi":"10.1007/s10967-026-11101-w","DOIUrl":"10.1007/s10967-026-11101-w","url":null,"abstract":"<div><p>The reactor production of the theranostic radioisotopes ⁶⁴Cu and ⁶⁷Cu from zinc targets was investigated through a combined Monte Carlo and experimental approach. MCNPX simulations showed that the activity of ⁶⁴Cu reaches 10⁴ MBq g⁻¹ for enriched ⁶⁴Zn compared to 10³ MBq g⁻¹ for natural zinc, while ⁶⁷Cu exhibited lower buildup due to its smaller cross section and low natural abundance. The calculated results agreed well with experimental measurements, with deviations within 8–14%. In this work, Zn@chitosan@diallylamine (Zn-CHDA) composite was synthesized and employed for the selective chromatographic recovery of Cu(II) from bulk Zn(II). Under optimized conditions (pH 4), batch studies revealed a strong preference for Zn(II) adsorption with a maximum selectivity factor of 14.1 ± 0.41, enabling effective discrimination between the two ions. Dynamic column experiments confirmed this behavior, where 94.0 ± 0.4% of Cu(II) was directly collected during the loading step with minimal Zn leakage (2.6 ± 0.2%), while 97.3 ± 0.3% of Zn(II) was subsequently recovered using 1 M HCl in a sharp elution band, achieving 98.5 ± 0.7% purity. Quality control of the obtained ⁶⁴⁺⁶⁷Cu fractions demonstrated excellent radionuclidic (99.5 ± 0.2%), radiochemical (98.7 ± 0.4%), and chemical purity, with only 0.35 ± 0.05 ppm residual Zn and no detectable Ni or Ga impurities. These results highlight a simple and efficient separation approach for simultaneous Cu recovery and Zn target recycling in reactor-based production systems.</p></div>","PeriodicalId":661,"journal":{"name":"Journal of Radioanalytical and Nuclear Chemistry","volume":"335 9","pages":"6129 - 6141"},"PeriodicalIF":1.7,"publicationDate":"2026-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149023179","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":"Aminophosphonic acid functionalized silica gel for uranium adsorption from low-concentration weakly alkaline solution: performance and mechanism","authors":"Sirou Wang,&nbsp;Xiaowen Zhang,&nbsp;YuJing Zhao,&nbsp;Siyu Zhang,&nbsp;Dandan Liao,&nbsp;Dekang Qin,&nbsp;Tao Cai,&nbsp;Yilong Hua,&nbsp;Xiaoyan Wu,&nbsp;Mi Li","doi":"10.1007/s10967-026-11105-6","DOIUrl":"10.1007/s10967-026-11105-6","url":null,"abstract":"<div><p>Uranium-contaminated alkaline wastewater poses a threat to the environment. Herein, an aminophosphonic acid functionalized silica gel (APSG) adsorbent was synthesized by grafting aminophosphonic acid groups onto low-cost commercial silica gel (SG). APSG maintained adsorption efficiency above 90% over a pH range of 5.0–9.0. At pH = 9.0 and C₀ = 5 mg L⁻¹, APSG achieved a 99.69% uranium removal rate, representing a 65% increase over SG. The capture of uranium is facilitated by coordination with the oxygen and nitrogen atoms within aminophosphonic acid groups. APSG demonstrated promising potential for low-cost, efficient U(VI) sorption from weakly alkaline solution.</p></div>","PeriodicalId":661,"journal":{"name":"Journal of Radioanalytical and Nuclear Chemistry","volume":"335 9","pages":"6155 - 6168"},"PeriodicalIF":1.7,"publicationDate":"2026-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149023111","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":"Surrogate-assisted prediction of radionuclide inventories for radiochemical characterization of activated CANDU reactor materials","authors":"Seok Jun Hong,&nbsp;Nak Woong Yang,&nbsp;Seung Uk Yoo,&nbsp;Chang Je Park","doi":"10.1007/s10967-026-11081-x","DOIUrl":"10.1007/s10967-026-11081-x","url":null,"abstract":"<div><p>Accurate prediction of nuclide-specific activity is important for radiological characterization of activated structures during nuclear power plant decommissioning. However, repeated calculations become computationally demanding when neutron flux, impurity concentration, and cooling time vary. In addition, a surrogate model that directly predicts final activity must simultaneously represent irradiation-dependent nuclide formation and post-irradiation decay, which can reduce accuracy for decay-chain-dominated radionuclides. This study evaluates three surrogate approaches for activated CANDU structural materials. The three-variable response-surface surrogate (3RSS) directly predicts final activity. The response surface–decay model (RSDM) predicts end-of-irradiation (EOI) activity using a quadratic response surface and subsequently applies physical decay calculations. The hybrid surrogate–decay model (HSDM) replaces the response surface with Gaussian process regression while retaining the same decay module. Performance was evaluated using 2,000 independent Sobol verification cases. The RSDM and HSDM generally outperformed the 3RSS, demonstrating the benefit of separating EOI prediction from cooling-time calculations. The HSDM achieved the lowest errors for most radionuclides and showed lower sensitivity to limited training data. These results indicate that the HSDM provides an accurate and computationally efficient approximation of MCNP–ORIGEN calculations within the predefined input domain.</p></div>","PeriodicalId":661,"journal":{"name":"Journal of Radioanalytical and Nuclear Chemistry","volume":"335 9","pages":"5905 - 5917"},"PeriodicalIF":1.7,"publicationDate":"2026-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149023116","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":"Assessment of rare earth elements, actinides, and radionuclides in nearshore sediments of urban-adjacent coastal zones in Athens (Greece) and Fujairah (UAE)","authors":"A. Santos,&nbsp;Chr. Tsabaris,&nbsp;J. Zavašnik,&nbsp;I. Panagiotopoulos,&nbsp;A. Gondikas,&nbsp;A. Argyraki,&nbsp;A. Godelitsas","doi":"10.1007/s10967-026-11106-5","DOIUrl":"10.1007/s10967-026-11106-5","url":null,"abstract":"<div><p>This study presents the first assessment of REEs, actinides (Th and U), and radionuclides in nearshore sediments from Athens, Greece (Kifissos River discharge into the Saronic Gulf) and Fujairah, UAE (harbor area), using XRD, ICP-MS, electron microscopy, and γ-ray spectrometry. REE concentrations were higher in Athens sediments, reflecting geological and anthropogenic influences as revealed by SEM- and TEM-EDS. Thorium in Athens is associated with minerals such as zircon, whereas U in both areas occurred at low crustal background levels.⁴⁰K activity varied, while¹³⁷Cs activity was higher in Athens and lower in Fujairah, consistent with historical Chernobyl atmospheric deposition.</p></div>","PeriodicalId":661,"journal":{"name":"Journal of Radioanalytical and Nuclear Chemistry","volume":"335 9","pages":"6097 - 6109"},"PeriodicalIF":1.7,"publicationDate":"2026-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149023191","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":"Carboxymethyl cellulose microgels as promising multifunctional carriers of bismuth radionuclides and drugs","authors":"M. A. Orlova,&nbsp;V. V. Spiridonov,&nbsp;T. P. Trofimova,&nbsp;A. A. Evdokimov,&nbsp;A. P. Orlov,&nbsp;A. S. Borodkov,&nbsp;L. S. Zamurueva,&nbsp;A. A. Yaroslavov,&nbsp;S. N. Kalmykov","doi":"10.1007/s10967-026-11094-6","DOIUrl":"10.1007/s10967-026-11094-6","url":null,"abstract":"<div><p>Ternary microgels CMC-Bi(²¹³Bi, ²⁰⁷Bi)-L obtained by crosslinking of bismuth ions with carboxymethylcellulose (CMC) and physicochemically characterized. Here L is AP = 2-aminopyrimidine / L¹ = <i>N</i>-(5,6-dihydro-4<i>H</i>-1,3-thiazin-2-yl)benzamide / L² = <i>N</i>-(4-isopropyl—phenyl)–<i>N</i>-(1 -iminoethyl) piperidine–1-carbothioamide hydrobromide. Ligands L¹ and L² are NO synthase effectors (inhibitor and activator, respectively), possessing antileukemic properties. The sizes of ternary microgels containing L¹ and L² were 160–180 nm in PBS and 110–160 nm in PBS + BSA compared to 400 nm for the native CMC. Cytotoxicity tests revealed the most promising microgel compositions (c TW = 625) for further research for medical purposes. The distribution and elimination of ternary microgels in vivo in the body studied on a mouse model and for most organs it was approximately 24 h.</p></div>","PeriodicalId":661,"journal":{"name":"Journal of Radioanalytical and Nuclear Chemistry","volume":"335 9","pages":"6187 - 6196"},"PeriodicalIF":1.7,"publicationDate":"2026-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149023063","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":"The distribution of radioactive caesium in river water at the Tama River watershed six years after the Fukushima Daiichi Nuclear Power Plant accident","authors":"Satoshi Inose,&nbsp;Masato Akiyama,&nbsp;Kenta Hagiwara,&nbsp;Yuya Koike","doi":"10.1007/s10967-026-11084-8","DOIUrl":"10.1007/s10967-026-11084-8","url":null,"abstract":"<div><p>Following the Fukushima Dai-ichi Nuclear Power Plant accident, radioactive caesium was detected in the Tama River watershed in the Kanto region of Japan. Radioactivity analysis was conducted on river water samples collected in 2017 to determine the distribution of dissolved and suspended radioactive caesium in the Tama River watershed. The activity concentrations of ¹³⁷Cs in the dissolved and suspended phases were below 1.17 mBq L⁻¹ and 3.30 mBq L⁻¹, respectively. A significant correlation was observed between the activity concentration of ¹³⁷Cs in the river water and several water quality parameters. We obtained useful insights into the migration of ¹³⁷Cs in river water within a watershed within urban areas.</p></div>","PeriodicalId":661,"journal":{"name":"Journal of Radioanalytical and Nuclear Chemistry","volume":"335 9","pages":"5919 - 5928"},"PeriodicalIF":1.7,"publicationDate":"2026-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10967-026-11084-8.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149023113","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":"MicroPET imaging and biodistribution of 18F-labeled HER2 mimetic peptide probe","authors":"Donghui Pan,&nbsp;Qiao Zeng,&nbsp;Yu Su,&nbsp;Haifeng Li,&nbsp;Tenghua Yu,&nbsp;Jiali Zou,&nbsp;Zhixue Chen,&nbsp;Zhijun Chen,&nbsp;Yanxing Guan,&nbsp;Jinxiu Zhong","doi":"10.1007/s10967-026-11075-9","DOIUrl":"10.1007/s10967-026-11075-9","url":null,"abstract":"<div><p>HER2 heterogeneity in breast cancer limits the accuracy of traditional detection methods, necessitating molecular imaging probes for dynamic HER2 status assessment. This study developed a novel ¹⁸F-labeled HER2-targeted peptide probe, ¹⁸F-NFP-B2-S22-AFA (hereafter abbreviated as ¹⁸F-NFP-TP1296), and evaluated its imaging efficacy in breast cancer models. The probe was synthesized via a two-step radiosynthesis strategy and assessed in HER2-positive SKBR-3 xenografts using MicroPET/CT. ¹⁸F-NFP-TP1296 exhibited high radiochemical purity (&gt; 95%) and significant tumor uptake (5.63–6.26%ID/g at 30–60 min), with lung metastases also detectable (2.50%ID/g at 60 min). The probe offers rapid synthesis and good targeting specificity, but further optimization is needed to reduce hepatic uptake and improve metastasis detection.</p></div>","PeriodicalId":661,"journal":{"name":"Journal of Radioanalytical and Nuclear Chemistry","volume":"335 9","pages":"6031 - 6043"},"PeriodicalIF":1.7,"publicationDate":"2026-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149023224","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":"Optimization of useful ion yield for uranium particles in LG-SIMS multi-collection mode and preliminary investigation of ThO+ signal characteristics toward age dating","authors":"Ruixuan Hu,&nbsp;Ningjie Zhong,&nbsp;Shenghui Huang,&nbsp;Xiong Zhao,&nbsp;Chen Wang,&nbsp;Xinghong Zhao,&nbsp;Yan Zhang,&nbsp;Fangda Ren,&nbsp;Huan He,&nbsp;Yonggang Zhao,&nbsp;Yan Shen","doi":"10.1007/s10967-026-11099-1","DOIUrl":"10.1007/s10967-026-11099-1","url":null,"abstract":"<div><p>In this study, the useful ion yield of uranium on vitreous carbon planchets was determined using large-geometry secondary ion mass spectrometer (LG-SIMS) in multi-collector mode with IRMM-2329P standard uranium particles. The influences of raster size and primary ion beam current under Gaussian-mode were systematically investigated. Uranium oxide particles fabricated via a hydrothermal method were further adopted to comparatively evaluate the effects of four types of primary ion beams (O₂⁺, O⁻, O₂⁻, O₃⁻) and two substrate materials (vitreous carbon and silicon) on uranium useful ion yield. The measurement results demonstrated that a 20 μm raster size provides a favorable balance between signal collection efficiency, measurement repeatability, and single-particle selectivity, acquiring more than 90% of total ion counts even at a beam current of 50 nA. Under identical primary ion beam conditions, the uranium useful ion yield on vitreous carbon was substantially higher than that on silicon, and negative oxygen ion beams outperformed positive beams in ionization efficiency. Among all tested beams, the O₃⁻ primary beam exhibited the most prominent improvement in yield. The useful ion yield directly determined with IRMM-2329P certified particles under the conventional O₂⁺ beam was 2.03%; scaling by relative total U⁺ ion counts further indicated that the O₃⁻ beam provided the highest estimated yield of 3.27% on vitreous carbon, 61% higher than that of O₂⁺. In addition, using thorium nitrate and CRM U850 powder, we preliminarily investigated the signal characteristics of ThO⁺ ion clusters in view of their potential application to age dating of uranium particles, with ThO₂⁺ evaluated for comparison. The test results indicated that under the conditions of O₂⁺ primary beam and vitreous carbon planchets substrate, ThO⁺ exhibited higher signal intensity and better stability than Th⁺. Additionally, the signal intensity of ThO⁺ could exceed four times that of Th⁺ with the increase of surface oxygen coverage. These findings provide baseline data on ThO⁺ ionization behavior toward the development and optimization of uranium particle age-dating methods.</p></div>","PeriodicalId":661,"journal":{"name":"Journal of Radioanalytical and Nuclear Chemistry","volume":"335 9","pages":"6281 - 6291"},"PeriodicalIF":1.7,"publicationDate":"2026-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149023066","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}