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Determination of stability constants of fluoride complexes of Th(IV) and Al(III) by potentiometry with ion selective electrode 离子选择电极电位法测定Th（IV）和Al（III）氟配合物的稳定性常数
IF 1.6 3区 化学
Journal of Radioanalytical and Nuclear Chemistry Pub Date : 2025-08-28 DOI: 10.1007/s10967-025-10338-1
Jiaai Chen, Junxin Liu, Daqian Liu, Min Huang, Taoyuan Xiu, Zhirong Liu
{"title":"Determination of stability constants of fluoride complexes of Th(IV) and Al(III) by potentiometry with ion selective electrode","authors":"Jiaai Chen,&nbsp;Junxin Liu,&nbsp;Daqian Liu,&nbsp;Min Huang,&nbsp;Taoyuan Xiu,&nbsp;Zhirong Liu","doi":"10.1007/s10967-025-10338-1","DOIUrl":"10.1007/s10967-025-10338-1","url":null,"abstract":"<div><p>Using a fluoride ion selective electrode and multivariate regression analysis conducted with Matlab or Excel, the stability constants of Th(IV) and Al(III) fluorides were determined at 25 °C and 0.01 mol L<sup>−1</sup> (NH<sub>4</sub>)<sub>2</sub>SO<sub>4</sub> ionic strength. The results indicate that the overall stability constants for hydrogen fluoride complexes were <i>β</i><sub>1</sub> = 621.45 and <i>β</i><sub>2</sub> = 6.34 × 10<sup>3</sup>. For thorium fluoride complexes, they were <i>β</i><sub>1</sub> = 3.59 × 10<sup>5</sup>, <i>β</i><sub>2</sub> = 1.89 × 10<sup>10</sup>, <i>β</i><sub>3</sub> = 6.58 × 10<sup>14</sup>, and <i>β</i><sub>4</sub> = 1.42 × 10<sup>19</sup>, respectively. For aluminum fluoride complexes, they were <i>β</i><sub>1</sub> = 3.27 × 10<sup>5</sup>, <i>β</i><sub>2</sub> = 6.53 × 10<sup>10</sup>, <i>β</i><sub>3</sub> = 5.16 × 10<sup>14</sup>, <i>β</i><sub>4</sub> = 5.00 × 10<sup>17</sup>, and <i>β</i><sub>5</sub> = 2.18 × 10<sup>19</sup>, respectively.</p></div>","PeriodicalId":661,"journal":{"name":"Journal of Radioanalytical and Nuclear Chemistry","volume":"334 9","pages":"6387 - 6394"},"PeriodicalIF":1.6,"publicationDate":"2025-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145210727","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}
引用次数: 0
Assessment of heavy metal contamination and associated health risks in soil and food crops of Babban Tsauni gold mines, Gwagwalada, Nigeria 尼日利亚瓜瓦拉达Babban Tsauni金矿土壤和粮食作物重金属污染及相关健康风险评估
IF 1.6 3区 化学
Journal of Radioanalytical and Nuclear Chemistry Pub Date : 2025-08-28 DOI: 10.1007/s10967-025-10344-3
K. A. Odelami, M. O. A. Oladipo, Y. Musa, M. A. Onoja, H. Nasiru
{"title":"Assessment of heavy metal contamination and associated health risks in soil and food crops of Babban Tsauni gold mines, Gwagwalada, Nigeria","authors":"K. A. Odelami,&nbsp;M. O. A. Oladipo,&nbsp;Y. Musa,&nbsp;M. A. Onoja,&nbsp;H. Nasiru","doi":"10.1007/s10967-025-10344-3","DOIUrl":"10.1007/s10967-025-10344-3","url":null,"abstract":"<div><p>The present study assessed the level of heavy metals in soil and food crops near Babban Tsauni gold mines and associated ecological and health risks. Concentrations of metals such as As, Mn, Cr, Zn, Co, Cu, and Fe (in ppm) were determined using Instrumental Neutron activation analysis, while Pb and Ni (ppm) were analyzed using X-ray fluorescence spectrometry. Results revealed that the soil was contaminated with Pb, Mn, and Fe exceeding WHO limits, with tubers having higher metal concentrations than grains. Pb, Ni, Cr, and Zn levels in all crops exceeded FAO limits. Hence, pollution indices indicated varying degrees of contamination, from low to very high, and the populations, especially children, are likely to experience adverse non-carcinogenic risks due to exposure to soil around the mines.</p></div>","PeriodicalId":661,"journal":{"name":"Journal of Radioanalytical and Nuclear Chemistry","volume":"334 9","pages":"5869 - 5885"},"PeriodicalIF":1.6,"publicationDate":"2025-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145210807","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}
引用次数: 0
Radiological risk assessment and hazard indices of rhyolite volcano: a case study based on natural radionuclide concentrations and dose evaluation parameters 流纹岩火山辐射风险评价与危害指数：基于天然放射性核素浓度和剂量评价参数的个案研究
IF 1.6 3区 化学
Journal of Radioanalytical and Nuclear Chemistry Pub Date : 2025-08-28 DOI: 10.1007/s10967-025-10321-w
Mohamed Y. Hanfi, Mohammad W. Marashdeh, Ahmed E. Abdel Gawad
{"title":"Radiological risk assessment and hazard indices of rhyolite volcano: a case study based on natural radionuclide concentrations and dose evaluation parameters","authors":"Mohamed Y. Hanfi,&nbsp;Mohammad W. Marashdeh,&nbsp;Ahmed E. Abdel Gawad","doi":"10.1007/s10967-025-10321-w","DOIUrl":"10.1007/s10967-025-10321-w","url":null,"abstract":"<div><p>The present investigation looks at the radiological risks posed by rhyolite volcano through an evaluation of petrographic characteristics, natural radioactivity in 35 samples through laboratory gamma-ray spectrometry. The dominant components of rhyolite are quartz, K-feldspar, and plagioclase; however, accessory minerals present were zircon, thorite, and cassiterite. Activity concentrations of <sup>238</sup>U, <sup>232</sup>Th, and <sup>40</sup>K ranged from 275 to 833 Bq kg<sup>−1</sup>, 2477 to 4976 Bq kg<sup>−1</sup>, and 698 to 1714 Bq kg<sup>−1</sup>, respectively. Radiological indices were computed from the activity concentration results, which also identified <sup>232</sup>Th and <sup>238</sup>U as the principle radiological risk contributors. Statistical analyses found strong associations between <sup>232</sup>Th and the radiological indices. The results of this investigation demonstrate the utility of combining petrographic integrating with radiological measurements for the assessment of health and environmental risks.</p></div>","PeriodicalId":661,"journal":{"name":"Journal of Radioanalytical and Nuclear Chemistry","volume":"334 9","pages":"6229 - 6242"},"PeriodicalIF":1.6,"publicationDate":"2025-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145210810","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}
引用次数: 0
Health risk study of groundwater uranium and terrestrial gamma radiation in Sawai Madhopur, Rajasthan (India) 印度拉贾斯坦邦Sawai Madhopur地下水铀和地面伽马辐射健康风险研究
IF 1.6 3区 化学
Journal of Radioanalytical and Nuclear Chemistry Pub Date : 2025-08-28 DOI: 10.1007/s10967-025-10340-7
Avinash Kumar Bairwa, Kalawati Saini, S. K. Sahoo, S. N. Tiwari, Tejpal Menaria, Kalpana Gupta
{"title":"Health risk study of groundwater uranium and terrestrial gamma radiation in Sawai Madhopur, Rajasthan (India)","authors":"Avinash Kumar Bairwa,&nbsp;Kalawati Saini,&nbsp;S. K. Sahoo,&nbsp;S. N. Tiwari,&nbsp;Tejpal Menaria,&nbsp;Kalpana Gupta","doi":"10.1007/s10967-025-10340-7","DOIUrl":"10.1007/s10967-025-10340-7","url":null,"abstract":"<div><p>This study evaluates uranium concentrations in groundwater from Sawai Madhopur district, Rajasthan, India. Uranium activity ranged from 0.01 to 9.7 Bq L<sup>−1</sup> pre-monsoon and 0.003 to 7.5 Bq L<sup>−1</sup> post-monsoon. Chemical and radiological risks were assessed using hazard quotient, lifetime average daily dose, and excess cancer risk across age groups. At some sites, ingestion doses exceeded the WHO guidance value of 100 μSv year<sup>−1</sup>, and hazard quotients surpassed unity, indicating potential chemical toxicity. However, lifetime cancer risk and annual effective dose remained below thresholds limits. Spatial and seasonal variability highlight localized health risks, emphasizing the need for regular monitoring and targeted water safety management.</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":"334 9","pages":"6077 - 6089"},"PeriodicalIF":1.6,"publicationDate":"2025-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145210811","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}
引用次数: 0
Radiological and ecological consequences of a hypothetical nuclear submarine accident in the Eastern Mediterranean 东地中海假想核潜艇事故的辐射和生态后果
IF 1.6 3区 化学
Journal of Radioanalytical and Nuclear Chemistry Pub Date : 2025-08-28 DOI: 10.1007/s10967-025-10350-5
Akbar Abbasi, Fatemeh Mirekhtiary, Mayeen Uddin Khandaker, Serap Maden, Ahmed H. Ali
{"title":"Radiological and ecological consequences of a hypothetical nuclear submarine accident in the Eastern Mediterranean","authors":"Akbar Abbasi,&nbsp;Fatemeh Mirekhtiary,&nbsp;Mayeen Uddin Khandaker,&nbsp;Serap Maden,&nbsp;Ahmed H. Ali","doi":"10.1007/s10967-025-10350-5","DOIUrl":"10.1007/s10967-025-10350-5","url":null,"abstract":"<div><p>A hypothetical accident involving a nuclear power submarine (NPS) in the Eastern Mediterranean Sea was described. The dispersion model used for simulating the dispersal of man-made radionuclides was the hybrid single-particle Lagrangian integrated trajectory (HYSPLIT) code. “Environmental Risk from Ionising Contaminants: Assessment and Management” (ERICA) tools were employed to evaluate issues related to sea health and potential hazards in the event of an accident. The distribution models for radionuclides <sup>137</sup>Cs, <sup>134</sup>Cs, <sup>90</sup>Sr, and <sup>131</sup>I were simulated, and their results were used in ERICA tools to predict radiation risks to marine biota. Among these species, the highest internal dose rates were observed in macroalgae (1.67 × 10<sup>5</sup> µGy h<sup>−1</sup>) and the highest external dose rates in polychaete worms (2.79 × 10<sup>4</sup> µGy h<sup>−1</sup>). Dose accumulation in all organisms exceeded the screening value.</p></div>","PeriodicalId":661,"journal":{"name":"Journal of Radioanalytical and Nuclear Chemistry","volume":"334 9","pages":"6169 - 6177"},"PeriodicalIF":1.6,"publicationDate":"2025-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10967-025-10350-5.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145210812","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}
引用次数: 0
Automated synthesis of [64Cu]Cu-NOTA-JR11 using a solid target medical cyclotron and its preclinical evaluation for SSTR imaging 固体靶医用回旋加速器自动合成[64Cu]Cu-NOTA-JR11及其用于SSTR成像的临床前评价
IF 1.6 3区 化学
Journal of Radioanalytical and Nuclear Chemistry Pub Date : 2025-08-28 DOI: 10.1007/s10967-025-10323-8
Fanhui Yang, Yousheng Zhan, Fei Luo, Lingzhi Cao, Fei Chen, Hao Zhang, Suping Li, Hao Xu
{"title":"Automated synthesis of [64Cu]Cu-NOTA-JR11 using a solid target medical cyclotron and its preclinical evaluation for SSTR imaging","authors":"Fanhui Yang,&nbsp;Yousheng Zhan,&nbsp;Fei Luo,&nbsp;Lingzhi Cao,&nbsp;Fei Chen,&nbsp;Hao Zhang,&nbsp;Suping Li,&nbsp;Hao Xu","doi":"10.1007/s10967-025-10323-8","DOIUrl":"10.1007/s10967-025-10323-8","url":null,"abstract":"<div><p>[<sup>64</sup>Cu]Cu-NOTA-JR11 was successfully prepared using a low-energy medical cyclotron and a fully automated solid target purification and synthesis platform. The tracer exhibited excellent radiochemical purity, in vitro stability, and PET imaging properties in preliminary animal studies. The method supports scalable production of <sup>64</sup>Cu-labeled SSTR antagonists and provides a basis for further preclinical development and clinical translation.</p></div>","PeriodicalId":661,"journal":{"name":"Journal of Radioanalytical and Nuclear Chemistry","volume":"334 9","pages":"6043 - 6054"},"PeriodicalIF":1.6,"publicationDate":"2025-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145210813","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}
引用次数: 0
Two-stage chromatographic separation of americium and curium using NaBiO3-Celite and DGA column prior to α-spectrometry analysis α-光谱分析前，采用NaBiO3-Celite和DGA柱对镅和锔进行两级色谱分离
IF 1.6 3区 化学
Journal of Radioanalytical and Nuclear Chemistry Pub Date : 2025-08-28 DOI: 10.1007/s10967-025-10355-0
Yufeng Wang, Jinlong Fan, Mao Fan, Yihua Dai, Qingjiang Yu, Xukang Zhao, Xiufang Zhai, Yaowen Hu, Tai Kang, Zhichao Liu, Zhiming Li
{"title":"Two-stage chromatographic separation of americium and curium using NaBiO3-Celite and DGA column prior to α-spectrometry analysis","authors":"Yufeng Wang,&nbsp;Jinlong Fan,&nbsp;Mao Fan,&nbsp;Yihua Dai,&nbsp;Qingjiang Yu,&nbsp;Xukang Zhao,&nbsp;Xiufang Zhai,&nbsp;Yaowen Hu,&nbsp;Tai Kang,&nbsp;Zhichao Liu,&nbsp;Zhiming Li","doi":"10.1007/s10967-025-10355-0","DOIUrl":"10.1007/s10967-025-10355-0","url":null,"abstract":"<div><p>In this study, NaBiO<sub>3</sub>-Celite column was used to separate Cm from Am based on the oxidition and adsorption ability of NaBiO<sub>3</sub>. However, the dissolved Bi affects α-spectral measurement of Am and Cm. So, DGA resin was used to remove Bi based on the adsorption properties in HNO<sub>3</sub> and HCl mediums. Finally, the two-stage chromatographic separation method was developed and achieved high recoveries (&gt; 80% for both Am and Cm) with high decontamination factors (DF) (&gt; 4 × 10<sup>4</sup> of <i>DF</i><sub>Cm/Am</sub>, 2 × 10<sup>2</sup> of <i>DF</i><sub>Am/Cm</sub>). It was promising as the final purification step prior to the α analysis of Am and Cm.</p></div>","PeriodicalId":661,"journal":{"name":"Journal of Radioanalytical and Nuclear Chemistry","volume":"334 9","pages":"6219 - 6228"},"PeriodicalIF":1.6,"publicationDate":"2025-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145210728","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}
引用次数: 0
Primordial radionuclide measurements and elemental concentrations in some vegetables grown in agricultural fields and under greenhouse conditions in the Kurdistan region 库尔德斯坦地区在农田和温室条件下种植的一些蔬菜的原始放射性核素测量和元素浓度
IF 1.6 3区 化学
Journal of Radioanalytical and Nuclear Chemistry Pub Date : 2025-08-28 DOI: 10.1007/s10967-025-10333-6
Adeeb O. Jafir, Barzan N. Sabr, Hallo M. Abdullah, Hawbash Hamadamin Karim, Faten Adel Ismael Chaqmaqchee, Ali H. Ahmed
{"title":"Primordial radionuclide measurements and elemental concentrations in some vegetables grown in agricultural fields and under greenhouse conditions in the Kurdistan region","authors":"Adeeb O. Jafir,&nbsp;Barzan N. Sabr,&nbsp;Hallo M. Abdullah,&nbsp;Hawbash Hamadamin Karim,&nbsp;Faten Adel Ismael Chaqmaqchee,&nbsp;Ali H. Ahmed","doi":"10.1007/s10967-025-10333-6","DOIUrl":"10.1007/s10967-025-10333-6","url":null,"abstract":"<div><p>This study measured natural radioactive materials using NaI(Tl) gamma ray spectrometry and elements using X-ray fluorescence. It was obtained from vegetables, virgin soil, and fertilized soil in seventeen farming regions, nine of which were greenhouse fields in Kurdistan. Considering radiation hazard indices, the perspective of safety indicates that consuming vegetables over a lifetime poses no potential harm to human health. The statistical analysis showed that <sup>226</sup>Ra positively correlates with <sup>232</sup>Th and somewhat with silicon and aluminum. <sup>232</sup>Th correlated moderately with silicon and weakly with calcium and aluminum. <sup>40</sup>K inversely correlates with <sup>226</sup>Ra and <sup>232</sup>Th, implying different geological origins.</p></div>","PeriodicalId":661,"journal":{"name":"Journal of Radioanalytical and Nuclear Chemistry","volume":"334 9","pages":"6063 - 6075"},"PeriodicalIF":1.6,"publicationDate":"2025-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145210809","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}
引用次数: 0
Direct electrochemical analysis of iodide anions in an off-gas condensate simulant 烟气冷凝模拟剂中碘离子阴离子的直接电化学分析
IF 1.6 3区 化学
Journal of Radioanalytical and Nuclear Chemistry Pub Date : 2025-08-28 DOI: 10.1007/s10967-025-10337-2
Junhua Jiang, Kathryn Taylor-Pashow, Corey Martin
{"title":"Direct electrochemical analysis of iodide anions in an off-gas condensate simulant","authors":"Junhua Jiang,&nbsp;Kathryn Taylor-Pashow,&nbsp;Corey Martin","doi":"10.1007/s10967-025-10337-2","DOIUrl":"10.1007/s10967-025-10337-2","url":null,"abstract":"<div><p>Direct electrochemical analysis of iodide anions in a Hanford off-gas condensate simulant has been studied by the cyclic voltammetry and chronoamperometry method. Well-developed cyclic voltammograms displaying distinguishable oxidation and reduction peaks have been obtained on gold and glassy carbon disc electrodes. The chronoamperograms are characteristic of fast current decays at short times and slow current decays at longer times. Both the cyclic voltammograms and the chronoamperograms are strongly dependent upon the concentration of iodide ions. Moreover, the voltametric peak currents and the sampled slow-decay currents exhibit good linear relationship with the concentrations. The lower detection limit of approximately 0.9 ppm iodide has been obtained on the gold electrode from the cyclic voltametric measurements. These results suggest that it is prospective to develop the electroanalytical method to measure the concentration of iodide ions in a complicated environment such as contaminated underground water and radioactive liquid wastes.</p><h3>Graphical Abstract</h3><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":"334 9","pages":"5951 - 5957"},"PeriodicalIF":1.6,"publicationDate":"2025-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145210808","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}
引用次数: 0
Precipitation of meta-autunite from Ca(II)-U(VI)-PO43− system with inorganic pH regulator for uranium immobilization 用无机pH调节剂从Ca(II)-U(VI)-PO43−体系中沉淀中超钙钛矿用于铀固定化
IF 1.6 3区 化学
Journal of Radioanalytical and Nuclear Chemistry Pub Date : 2025-08-25 DOI: 10.1007/s10967-025-10349-y
Jiamei Rao, Pingchao Ke, Kunkun Wang, Tiannan Wu, Tingting Zhong, Jiale Li, Huichun Gong, Lingling Xu, Yipeng Zhou, Zhanxue Sun
{"title":"Precipitation of meta-autunite from Ca(II)-U(VI)-PO43− system with inorganic pH regulator for uranium immobilization","authors":"Jiamei Rao,&nbsp;Pingchao Ke,&nbsp;Kunkun Wang,&nbsp;Tiannan Wu,&nbsp;Tingting Zhong,&nbsp;Jiale Li,&nbsp;Huichun Gong,&nbsp;Lingling Xu,&nbsp;Yipeng Zhou,&nbsp;Zhanxue Sun","doi":"10.1007/s10967-025-10349-y","DOIUrl":"10.1007/s10967-025-10349-y","url":null,"abstract":"<div><p>This study explored U immobilization via meta-autunite precipitation in a Ca(II)-U(VI)-PO<sub>4</sub><sup>3−</sup> system using NaOH/HNO<sub>3</sub> as inorganic pH regulators. Results demonstrated inorganic regulators achieved comparable U immobilization efficiency (98%) to organic ones under optimal conditions: 4 h reaction, 60–100 mg/L U, 25 °C, pH 6.0, and Ca:U:P = 50:1:10. XRD, SEM, and FT-IR analyses revealed no significant differences in product composition/structure between inorganic and organic regulators. However, inorganic-regulated products exhibited higher crystallinity and lamellar stacked grains. Despite NaOH usage, Na was absent in products due to meta-autunite’s superior stability over Na-autunite, favoring its preferential precipitation and inhibiting Na-autunite formation.</p></div>","PeriodicalId":661,"journal":{"name":"Journal of Radioanalytical and Nuclear Chemistry","volume":"334 9","pages":"6001 - 6014"},"PeriodicalIF":1.6,"publicationDate":"2025-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145210480","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}
引用次数: 0
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