Journal of Radioanalytical and Nuclear Chemistry最新文献

{"title":"Determination of 93Mo, 93mNb, 94Nb and 93Zr radionuclides in radioactive steel samples: extension of the method for determination of actinides and 93Zr","authors":"István Papp,&nbsp;Nóra Vajda,&nbsp;Szabolcs Osváth,&nbsp;Zsuzsa Molnár,&nbsp;Edit Bokori","doi":"10.1007/s10967-026-11020-w","DOIUrl":"10.1007/s10967-026-11020-w","url":null,"abstract":"<div><p>A novel radiochemical method has been obtained for the simultaneous determination of difficult-to-measure (DTM) nuclides ⁹³Mo, ^93mNb, ⁹⁴Nb and ⁹³Zr in irradiated steel by extending the method that had been developed for the determination of actinides (U, Np, Th, Am, Cm) and ⁹³Zr. The basic separation is performed on a DGA resin® (containing N,N,N’,N’-tetra-n-octyl diglycolamide) column which retains all actinides as well as Mo and Zr species from 4 M HCl solution. Nb gets in the effluent, Mo is stripped together with Fe, and Th, Np, Zr are stripped together. Nb is separated on a TEVA resin® (containing Aliquat 336) column after retaining it from 11 M HF solution. Mo is purified on an Alumina column loaded from 1 M HNO₃ solution. Zr, Np and Th are separated on another TEVA column after retaining them from 11 M HCl solution. ^93mNb and ⁹⁴Nb are measured by X-ray and gamma spectrometry, respectively. The concentrations of ⁹³Zr and ²³⁷Np are determined by ICP-MS, ⁹³Mo is measured by LSC. For the analysis of steel samples, a cation exchange pre-separation procedure was added to remove the steel matrix. Acceptable high chemical recoveries and decontamination factors depending on the demands of the given measuring technique were obtained for all radionuclides. The method was successfully applied for the determination of ⁹³Mo, ⁹³Zr, ^93mNb and ⁹⁴Nb nuclides in steel sample in an international proficiency test. </p></div>","PeriodicalId":661,"journal":{"name":"Journal of Radioanalytical and Nuclear Chemistry","volume":"335 8","pages":"5229 - 5245"},"PeriodicalIF":1.7,"publicationDate":"2026-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148816353","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":"Radiation-induced synthesis of poly(β-pinene) (PβP) an optically active polymer in presence of olivine","authors":"Franco Cataldo,&nbsp;Ransel Barzaga,&nbsp;D. Aníbal García-Hernández,&nbsp;Arturo Manchado,&nbsp;Ilaria Di Sarcina,&nbsp;Alessia Cemmi","doi":"10.1007/s10967-026-10959-0","DOIUrl":"10.1007/s10967-026-10959-0","url":null,"abstract":"<div><p>The radiation-induced polymerization of the optically active monomer (1S,5S)(−)-β-pinene was studied in presence of olivine (composition of the selected sample: (Mg_0.91<span>(cdot)</span>Fe_0.09)₂SiO₄), which is a ubiquitous rock-forming mineral in terrestrial, planetary, meteoritic, interstellar and circumstellar dust and astronomical geominerals. A reference study was also conducted on the radiation-induced polymerization of (1S,5S)(−)-β-pinene under inert atmosphere and without any additive. The polymerization kinetics rate constants and the radiation chemical yield were determined for both series of samples (without and with olivine) using thermogravimetry (TGA), gravimetry and polarimetry as analytical techniques. Olivine plays an evident role in triggering a higher radiation chemical yield (G_p) in the synthesis of poly(β-pinene) (PβP) at initial and at lower doses with respect to the reference pure (1S,5S)(−)-β-pinene polymerization. The PβP undergoes a grafing reaction on olivine and the maximum grafted amount was reached at 1000 kGy with 6.12% by weight over olivine. The chemisobed PβP fraction on olivine was found at 34.5%, while the remaining 65.5% of PβP loaded on olivine was found toluene soluble and extractable. The spectropolarimetry of the PβP extracted from the olivine surface suggests considerably lower molecular weight than that observed on the PβP synthesized in the bulk monomer.</p></div>","PeriodicalId":661,"journal":{"name":"Journal of Radioanalytical and Nuclear Chemistry","volume":"335 8","pages":"5281 - 5293"},"PeriodicalIF":1.7,"publicationDate":"2026-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148816355","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":"Physicochemical behavior of thorium in sediments from water bodies (marshes)","authors":"Marcos J. Solache-Ríos,&nbsp;Jaime Jiménez-Becerril,&nbsp;Melania Jiménez-Reyes,&nbsp;Perla Tatiana Almazán-Sánchez","doi":"10.1007/s10967-026-11010-y","DOIUrl":"10.1007/s10967-026-11010-y","url":null,"abstract":"<div><p>The physicochemical behavior of thorium in the presence of a natural marsh sediment (SPT) and its mineral composition (SPT-Ox) was studied by adsorption; both sediments were characterized. Thorium is efficiently adsorbed by both sediments (SPT and SPT-Ox); the maximum adsorption capacities were 12.79 and 14.84 mg g⁻¹ for SPT and SPT-Ox; the sediments are heterogeneous materials and the organic matter does not favor the adsorption of thorium. The adsorption processes are spontaneous and exothermic. The desorption studies indicate that complexing agents can decontaminate the sediments. This study provides knowledge on the contamination, decontamination, and remediation of sediments.</p></div>","PeriodicalId":661,"journal":{"name":"Journal of Radioanalytical and Nuclear Chemistry","volume":"335 8","pages":"5177 - 5187"},"PeriodicalIF":1.7,"publicationDate":"2026-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148816297","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":"Radionuclide distribution in Mediterranean and Marmara Sea sediments: influence of geochemistry and sediment texture","authors":"Anil Orta,&nbsp;Ayse Nur Esen","doi":"10.1007/s10967-026-11021-9","DOIUrl":"10.1007/s10967-026-11021-9","url":null,"abstract":"<div><p>This study investigated the activity concentrations of natural radionuclides (²²⁶Ra, ²³²Th, ⁴⁰K, ²¹⁰Pb) and the anthropogenic radionuclide (¹³⁷Cs) in marine sediments from the Mediterranean and Marmara Seas, Türkiye. The study further evaluated their relationships with sediment texture and geochemical composition. Activity concentrations were determined by high-purity germanium (HPGe) gamma spectrometry, while grain-size distribution and chemical composition were analyzed using standardized geotechnical tests and X-ray fluorescence spectroscopy. Mean activity concentrations for all samples were 6.8 Bq kg⁻¹ (²²⁶Ra), 13.6 Bq kg⁻¹ (²³²Th), 210.5 Bq kg⁻¹ (⁴⁰K), 56 Bq kg⁻¹ (²¹⁰Pb), and 3.9 Bq kg⁻¹ (¹³⁷Cs). Correlation and principal component analyses suggest positive relationships between radionuclide activities and clay content and negative relationships with sand content. The results suggest that bulk geochemical composition, sediment texture and basin setting may contribute to radionuclide variability in Turkish coastal sediments.</p></div>","PeriodicalId":661,"journal":{"name":"Journal of Radioanalytical and Nuclear Chemistry","volume":"335 8","pages":"5295 - 5306"},"PeriodicalIF":1.7,"publicationDate":"2026-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148816320","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":"Quantifying dissolved radon in drinking water using an augmented method","authors":"Maine K. Wau,&nbsp;Henao Willie,&nbsp;David Kolkoma,&nbsp;Felix Beslin Pereira,&nbsp;Jojo Panakal John","doi":"10.1007/s10967-026-11019-3","DOIUrl":"10.1007/s10967-026-11019-3","url":null,"abstract":"<div><p>Measurements of dissolved radon in water and resluting doses were assessed in 53 samples from the city of Lae in Papua New Guinea. The dissolved radon concentrations in the water samples ranged from 9 ± 1 to 44 ± 5 Bq l⁻¹, with a mean 24 ± 7 Bq l⁻¹. The annual average inhalation dose was 616 ± 162 μSv, and the ingestion dose contributed 52 ± 14 μSv resulting total annual effective dose of 0.67 ± 0.18 mSv due to dissolved radon in water. The results indicate no potential radiological concern to the public in the region.</p></div>","PeriodicalId":661,"journal":{"name":"Journal of Radioanalytical and Nuclear Chemistry","volume":"335 8","pages":"5263 - 5269"},"PeriodicalIF":1.7,"publicationDate":"2026-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148816354","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":"Study of coincidence spectrum analysis techniques for coincidence measurements","authors":"Xingyu Zhao,&nbsp;Qiankun Shao,&nbsp;Jia Li,&nbsp;Peng Lu,&nbsp;Qingjun Zhu","doi":"10.1007/s10967-026-11014-8","DOIUrl":"10.1007/s10967-026-11014-8","url":null,"abstract":"<div><p>This paper presents a Python-based spectral data processing system for γ–γ coincidence spectroscopy. The system adopts a modular architecture integrating data preprocessing, peak detection, peak boundary determination, and peak quantification. For peak quantification, it implements both a direct summation method and a Gaussian–exponential tail fitting method, and incorporates the statistics-sensitive nonlinear iterative peak-clipping (SNIP) algorithm for two-dimensional background estimation. The framework was evaluated using spectra acquired with a NaI(Tl) detector system from a standard ⁶⁰Co source, a ¹³⁷Cs/⁶⁰Co mixed source, and a ¹⁵²Eu source. Activity calculations were performed for selected validated coincidence pairs based on the Shao relation. In these selected cases, the relative deviations from the reference activities were below 7.5%. The ⁶⁰Co and ¹³⁷Cs/⁶⁰Co cases showed good consistency between the two peak-quantification methods. The ¹⁵²Eu case was used as a representative complex-spectrum test, rather than as a complete pair-by-pair benchmark of the full ¹⁵²Eu spectrum. The results indicate that the proposed framework provides a useful workflow for selected γ–γ coincidence-spectrum analysis and activity-estimation tasks under the tested conditions. Further validation is required before the method can be extended to general weak-peak quantification, low-activity samples, and broad multi-nuclide identification applications.</p></div>","PeriodicalId":661,"journal":{"name":"Journal of Radioanalytical and Nuclear Chemistry","volume":"335 8","pages":"5205 - 5228"},"PeriodicalIF":1.7,"publicationDate":"2026-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148816352","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":"Use of the Termoxid-3K sorbent for the removal of 90Sr from high-salinity liquid radioactive waste","authors":"Nadezhda V. Belokonova,&nbsp;Anna V. Voronina","doi":"10.1007/s10967-026-11016-6","DOIUrl":"10.1007/s10967-026-11016-6","url":null,"abstract":"<div><p>An assessment was carried out of the efficiency of removing the radionuclide ⁹⁰Sr from model solutions simulating liquid radioactive wastes of various origins and salt compositions using the inorganic sorbent Termoxid-3 K. The highest distribution coefficients for strontium were obtained in low-salinity neutral media and reach 1.4 × 10⁵ mL/g. Increasing the boric acid concentration in the solution to 0.5 mol/L has little effect on the sorption properties of T-3 K: the distribution coefficient for strontium remains at least 1.4 × 10⁴ mL/g. Increasing the sodium concentration in the solution above 0.1 mol/L leads to a tenfold decrease in the distribution coefficient. A decontamination of alkaline high-level radioactive waste (HLW) from spent nuclear fuel (SNF) reprocessing for ⁹⁰Sr was performed under dynamic (flow-through) conditions. The influence of sorbent mass and of the filtration rate of the liquid radioactive waste on removal efficiencies was established. At a flow rate of the simulated HLW solution of 60 mL/h, the volume of filtrate processed before reaching 1% breakthrough amounted to 127 bed volumes (BV); at 10 mL/h it was 200 BV which indicates a significant effect of filtration rate on the overall purification efficiency. Based on the results of the dynamic experiments, a sorption method for extracting ⁹⁰Sr from alkaline HLW using the Termoxid-3 K sorbent is proposed.</p></div>","PeriodicalId":661,"journal":{"name":"Journal of Radioanalytical and Nuclear Chemistry","volume":"335 8","pages":"5197 - 5204"},"PeriodicalIF":1.7,"publicationDate":"2026-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148816295","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":"Synthesis of amide-functionalized B18C6 extractants and evaluation of their extractability toward Cs(I)","authors":"Yi-Jia Na,&nbsp;Xu-Xin Li,&nbsp;Wen-Jiang Yang,&nbsp;Hong-Yi Wang,&nbsp;Wei-Jia Wang,&nbsp;Ze-Yu Ren,&nbsp;Yujin Wang,&nbsp;Ze-Yi Yan","doi":"10.1007/s10967-026-11018-4","DOIUrl":"10.1007/s10967-026-11018-4","url":null,"abstract":"<div><p>In this study, three aromatic amide-functionalized benzo-18-crown-6 (B18C6) derivatives (AmPh, AmPhOPh and AmPhtBu) were rationally synthesized via a three-step reaction route. The comprehensive extraction experiments were implemented to assess their extraction behaviors toward Cs(I). The influencing factors of contacting time, temperature, diluent, nitric acid concentration and concentration of extractant were analyzed in detail. Notably, the AmPhtBu derivative exhibited the prominent extraction ability and superior Cs(I) selectivity relative to the original B18C6. Furthermore, FT-IR and ESI-MS characterizations were utilized to elucidate the interaction mechanism and confirm the stoichiometry of extracted complexes. This research offers a feasible strategy for optimizing the structural design of B18C6 derivatives and improving the separation efficiency of Cs(I).</p></div>","PeriodicalId":661,"journal":{"name":"Journal of Radioanalytical and Nuclear Chemistry","volume":"335 8","pages":"5271 - 5280"},"PeriodicalIF":1.7,"publicationDate":"2026-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148816185","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":"Simple automated radiosynthesis of [18F]AlF-NOTA-melittin and biodistribution in normal mice","authors":"Chuanyin Sun,&nbsp;Guolin Wang,&nbsp;Chengjun Yao,&nbsp;Ahmad Alhaskawi,&nbsp;Yanzhao Dong,&nbsp;Xiangping Chen,&nbsp;Xinhui Su,&nbsp;Hui Lu,&nbsp;Zhenfeng Liu","doi":"10.1007/s10967-026-11015-7","DOIUrl":"10.1007/s10967-026-11015-7","url":null,"abstract":"<div><p>This study employed a solid-phase synthesis method to modify melittin, obtaining the labeled precursor NOTA-melittin. The aluminum fluoride method was used for the automated radiosynthesis of [¹⁸F]AlF-NOTA-melittin via an AllinOne module, achieving a radiochemical yield (RCY) of over 30%, with a synthesis time of approximately 30 min and a radiochemical purity surpassing 97%. Biodistribution studies in both normal mice and small animal PET experiments revealed that the drug exhibited significant uptake in the blood, with the liver showing the highest accumulation followed by the kidneys. This suggests that the primary site of drug metabolism is the liver, with subsequent metabolism occurring in the kidneys.</p></div>","PeriodicalId":661,"journal":{"name":"Journal of Radioanalytical and Nuclear Chemistry","volume":"335 8","pages":"5189 - 5196"},"PeriodicalIF":1.7,"publicationDate":"2026-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10967-026-11015-7.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148816350","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":"Integrated assessment of natural radioactivity, radiological health hazard, and crystalline quality in river sediments from Sicily, Southern Italy","authors":"Francesco Caridi,&nbsp;Antonio Francesco Mottese,&nbsp;Giuseppe Paladini,&nbsp;Lorenzo Pistorino,&nbsp;Francesco Gregorio,&nbsp;Giuliana Faggio,&nbsp;Giacomo Messina,&nbsp;Domenico Majolino,&nbsp;Valentina Venuti","doi":"10.1007/s10967-026-11011-x","DOIUrl":"10.1007/s10967-026-11011-x","url":null,"abstract":"<div><p>This study was designed to conduct a comprehensive investigation of natural radioactivity levels, radiological hazard to human health, and crystalline quality in river sediments from the Gulf of Patti (Sicily, Southern Italy), which was selected as a representative case study. A total of forty sediment samples were collected from eight coastal locations, with five samples obtained at each site. The sampling sites were chosen to adequately represent the study area, as they correspond to the mouths of the eight principal rivers discharging into the Gulf of Patti. Radionuclide activity concentrations were measured by gamma-ray spectrometry with a High-Purity Germanium (HPGe) detector. ²²⁶Ra (11.8–21.9 Bq kg⁻¹) and ²³²Th (18.3–33.1 Bq kg⁻¹) levels were generally below global averages, while ⁴⁰K (439–873 Bq kg⁻¹) exceeded the worldwide mean. Several hazard indices, including the absorbed dose rate (<i>D</i>), annual effective dose equivalent (AEDE), radium equivalent activity (Ra_eq), radioactivity representative level index (I_α), and excess lifetime cancer risk (ELCR), were calculated to evaluate potential radiological health implications. They all remain below internationally recommended reference limits, indicating no significant radiological health hazard. Furthermore, multivariate statistical methods were employed to explore possible relationships among radionuclide concentrations, radiological indices, and crystalline quality. The latter was assessed through the full width at half maximum (FWHM) of the quartz (101) diffraction peak, determined by X-ray diffraction (XRD) analysis and used as an indicator of crystal lattice defects. Specifically, Principal Component Analysis (PCA) and Hierarchical Cluster Analysis (HCA) revealed strong correlations and well-defined clustering patterns, while successfully identifying the site ID3 as a statistical outlier. Moreover, while the positive correlation between quartz FWHM and radioactivity was not statistically significant (<i>p</i> &gt; 0.05), a noticeable positive trend was observed, suggesting that crystalline disorder could mineralogically influence radionuclide incorporation. This integrated approach enabled a clear differentiation of sediment samples by both radiometric and microstructural features.</p></div>","PeriodicalId":661,"journal":{"name":"Journal of Radioanalytical and Nuclear Chemistry","volume":"335 8","pages":"5065 - 5078"},"PeriodicalIF":1.7,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148816302","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}