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Erratum to: Determination of Cleanup Criteria Due to Possible Radiological Hazard in Some Tantalite Mining Sites in Oke-Ogun, Oyo State, Nigeria 确定尼日利亚奥约州奥克-奥贡一些钽矿开采地点可能存在放射性危害的清理标准的勘误
IF 1
Radiochemistry Pub Date : 2026-03-31 DOI: 10.1134/S106636222601011X
A. E. Ajetunmobi, P. E. Biere, A. T. Talabi, W. T. David, S. K. Alausa, O. J. Odogboro, J. T. Majekodunmi, B. Mukeru, K. Anwar
{"title":"Erratum to: Determination of Cleanup Criteria Due to Possible Radiological Hazard in Some Tantalite Mining Sites in Oke-Ogun, Oyo State, Nigeria","authors":"A. E. Ajetunmobi, P. E. Biere, A. T. Talabi, W. T. David, S. K. Alausa, O. J. Odogboro, J. T. Majekodunmi, B. Mukeru, K. Anwar","doi":"10.1134/S106636222601011X","DOIUrl":"10.1134/S106636222601011X","url":null,"abstract":"","PeriodicalId":747,"journal":{"name":"Radiochemistry","volume":"68 1","pages":"98 - 98"},"PeriodicalIF":1.0,"publicationDate":"2026-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147571153","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Colloidal Forms of Migration of Manmade Radionuclides in Surface Waters of the Ob and Yenisei River Systems and the Adjacent Part of the Kara Sea 鄂毕河和叶尼塞河水系及邻近喀拉海表层水中人造放射性核素的胶体迁移形式
IF 1
Radiochemistry Pub Date : 2026-03-31 DOI: 10.1134/S1066362226010066
A. V. Travkina, A. N. Ligaev, G. Yu. Solovieva, A. K. Fedotova, I. E. Kazinskaya, A. P. Novikov
{"title":"Colloidal Forms of Migration of Manmade Radionuclides in Surface Waters of the Ob and Yenisei River Systems and the Adjacent Part of the Kara Sea","authors":"A. V. Travkina,&nbsp;A. N. Ligaev,&nbsp;G. Yu. Solovieva,&nbsp;A. K. Fedotova,&nbsp;I. E. Kazinskaya,&nbsp;A. P. Novikov","doi":"10.1134/S1066362226010066","DOIUrl":"10.1134/S1066362226010066","url":null,"abstract":"<p>The results of long-term studies on the main forms of migration of manmade radionuclides (<sup>90</sup>Sr, <sup>137</sup>Cs, <sup>239,240</sup>Pu) in river and marine ecosystems, performed at the Vernadsky Institute of Geochemistry and Analytical Chemistry, Russian Academy of Sciences, are presented. The data on the relative content of radioisotopes in various size fractions (in suspension, particle size larger than 0.45 μm; in solution, particle size smaller than 15 kDa; and in colloids with intermediate-size particles) reveal the influence of the hydrochemical regime of freshwater and marine ecosystems on the redistribution of radionuclides with respect to the size of particles accumulating them. The transport of radionuclides in the river system can occur in several forms. Cesium-137 migrates mainly in a form firmly fixed on the suspended matter and, to a lesser extent, in a soluble form. Strontium-90, on the contrary, migrates mainly in a soluble form and partly in the form of colloids of various sizes. Plutonium-239,240 is associated with large colloidal particles and suspended matter. In marine ecosystems, <sup>137</sup>Cs, on the contrary, it is mainly in the dissolved state, and <sup>90</sup>Sr is almost equally in the colloidal and dissolved fractions. Plutonium-239,240 is significantly bound to the suspended matter and is also equally distributed between the colloids and the dissolved fraction.</p>","PeriodicalId":747,"journal":{"name":"Radiochemistry","volume":"68 1","pages":"52 - 61"},"PeriodicalIF":1.0,"publicationDate":"2026-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147571096","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Preparative Scale Extraction Chromatographic Separation of Lutetium and Ytterbium Using a Sorbent Based on 2-Ethylhexyl Hydrogen 2-Ethylhexylphosphonate 以2-乙基己基磷酸氢为吸附剂的制备尺度萃取色谱分离镥和镱
IF 1
Radiochemistry Pub Date : 2026-03-31 DOI: 10.1134/S1066362226010029
K. S. Bobrovskaya, R. A. Kuznetsov, M. N. Lisova
{"title":"Preparative Scale Extraction Chromatographic Separation of Lutetium and Ytterbium Using a Sorbent Based on 2-Ethylhexyl Hydrogen 2-Ethylhexylphosphonate","authors":"K. S. Bobrovskaya,&nbsp;R. A. Kuznetsov,&nbsp;M. N. Lisova","doi":"10.1134/S1066362226010029","DOIUrl":"10.1134/S1066362226010029","url":null,"abstract":"<p>The features of preparative extraction-chromatographic separation of microquantities of lutetium and macroquantities of ytterbium have been studied using a sorbent, based on 2-ethylhexyl hydrogen 2-ethylhexylphosphonate (HEH[EHP]). A correlation between the volume of the elution start and the sorbent loading with macro-component has been established for both macro- and micro-components. These correlations allow us to estimate the volume of the column required for preparative processing of macro-quantities target. It has been demonstrated, that effective separation is possible even at high sorbent load, leading to considerable deviations from classical (Gaussian) chromatography dependencies. It was demonstrated, that processing 300 mg of Yb using a 100 cm<sup>3</sup> column (nearly 20% loading) is possible, allowing for separation of more than 95% of the target radionuclide and the content of matrix ytterbium in the lutetium fraction can be reduced by 83% in a single chromatographic cycle.</p>","PeriodicalId":747,"journal":{"name":"Radiochemistry","volume":"68 1","pages":"21 - 29"},"PeriodicalIF":1.0,"publicationDate":"2026-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147571138","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Radiological Assessment and Hazard Evaluation of Natural Radionuclides in Cement Manufactured in Iraq 伊拉克水泥中天然放射性核素的放射性评价和危害评价
IF 1
Radiochemistry Pub Date : 2026-03-31 DOI: 10.1134/S1066362226010108
Y. A. Baqir, M. Abdelmohsen, A. El-Taher
{"title":"Radiological Assessment and Hazard Evaluation of Natural Radionuclides in Cement Manufactured in Iraq","authors":"Y. A. Baqir,&nbsp;M. Abdelmohsen,&nbsp;A. El-Taher","doi":"10.1134/S1066362226010108","DOIUrl":"10.1134/S1066362226010108","url":null,"abstract":"<p>Comprehensive radiological assessment of cement products manufactured and commercially available in different regions of Iraq was made. Eighteen cement samples were collected and analyzed using gamma-ray spectrometry to determine the activity concentrations of the naturally occurring radionuclides <sup>226</sup>Ra, <sup>232</sup>Th, and <sup>40</sup>K. The measured mean activity concentrations were 25 ± 6, 14 ± 5, and 163 ± 70 Bq/kg, respectively, all of which are below the worldwide average values recommended by UNSCEAR. Radiological hazard parameters, including radium equivalent activity (Ra<sub>eq</sub>), absorbed gamma dose rate (<i>D</i><sub>γ</sub>), annual effective dose equivalent (AEDE), external and internal hazard indices (<i>H</i><sub>ex</sub> and <i>H</i><sub>in</sub>), and excess lifetime cancer risk (ELCR), were evaluated to assess potential health risks associated with the use of cement as a building material. The obtained mean Ra<sub>eq</sub> (56.8 Bq/kg) and <i>D</i><sub>γ</sub> (26.6 nGy/h) values are significantly lower than the recommended safety limits, indicating the low level of radiological exposure. The estimated AEDE was 0.28 mSv/year, while ELCR values remained well within acceptable limits. Correlation analysis revealed strong positive relationships between <sup>226</sup>Ra, <sup>232</sup>Th, and <sup>40</sup>K, suggesting a common geochemical origin of these radionuclides in cement raw materials. One sample exhibited relatively elevated <sup>40</sup>K activity, likely attributable to local geological characteristics or raw material composition.</p>","PeriodicalId":747,"journal":{"name":"Radiochemistry","volume":"68 1","pages":"90 - 97"},"PeriodicalIF":1.0,"publicationDate":"2026-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147571152","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Speciation and Bioaccumulation of Neptunium and Plutonium in Floodplain Soils and Sediments 洪泛平原土壤和沉积物中镎和钚的形态和生物积累
IF 1
Radiochemistry Pub Date : 2026-03-31 DOI: 10.1134/S1066362226010091
M. B. Popova, I. E. Kazinskaya, I. Yu. Myasnikov, A. P. Novikov
{"title":"Speciation and Bioaccumulation of Neptunium and Plutonium in Floodplain Soils and Sediments","authors":"M. B. Popova,&nbsp;I. E. Kazinskaya,&nbsp;I. Yu. Myasnikov,&nbsp;A. P. Novikov","doi":"10.1134/S1066362226010091","DOIUrl":"10.1134/S1066362226010091","url":null,"abstract":"<p>The bioconcentration factors and the associated forms of occurrence of neptunium and plutonium in soil and bottom sediment samples collected across a wide interregional geographic range of the Russian Federation were examined. Neptunium was determined using a luminescence method on activated crystal phosphors, with a detection limit of 1.8 × 10<sup>–4</sup> Bq, or 5 × 10<sup>–12</sup> g. Plutonium was determined by alpha spectrometry (10<sup>–3</sup> Bq). The study demonstrates that the specific properties of neptunium lead to higher relative bioconcentration of this element, reaching absolute activity levels comparable to those of plutonium. It should be noted that long-lived <sup>237</sup>Np is becoming one of the main dose-producing radionuclides in radioactive waste over time. Thus, radioecological study of the behavior of neptunium is of particular relevance and requires further development.</p>","PeriodicalId":747,"journal":{"name":"Radiochemistry","volume":"68 1","pages":"69 - 79"},"PeriodicalIF":1.0,"publicationDate":"2026-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147571137","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Britholite Composed Matrices for Immobilization of REE–Minor Actinide Fraction 硼砂组成的基质固定化稀土-微量锕系元素
IF 1
Radiochemistry Pub Date : 2026-03-31 DOI: 10.1134/S1066362226010017
S. V. Yudintsev, M. Yu. Kalenova, I. M. Melnikova
{"title":"Britholite Composed Matrices for Immobilization of REE–Minor Actinide Fraction","authors":"S. V. Yudintsev,&nbsp;M. Yu. Kalenova,&nbsp;I. M. Melnikova","doi":"10.1134/S1066362226010017","DOIUrl":"10.1134/S1066362226010017","url":null,"abstract":"<p>Materials based on Ca–REE silicate with an apatite–britholite structure are candidate matrices for isolating the REE–actinide fraction of nuclear fuel reprocessing waste. Britholite has a simple composition and high capacity for REEs and actinides; it is stable in hot solutions. Leaching rates of REEs (actinide simulants) by water and brine are 10<sup>–7</sup>–10<sup>–9</sup> g/(cm<sup>2</sup> day). Literature data on the properties of ceramics and glass-ceramics containing britholite are analyzed, including composition, behavior in solutions and under irradiation, information on natural mineral analogs, and methods for the industrial production of britholite matrices for immobilization of the REE–actinide fraction.</p>","PeriodicalId":747,"journal":{"name":"Radiochemistry","volume":"68 1","pages":"1 - 20"},"PeriodicalIF":1.0,"publicationDate":"2026-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147571133","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Sorption Recovery of Yttrium-90 from Carbonate Media 碳酸盐介质中钇-90的吸附回收
IF 1
Radiochemistry Pub Date : 2026-03-31 DOI: 10.1134/S1066362226010030
V. V. Milyutin, N. A. Nekrasova, V. O. Kaptakov, A. A. Naumov, T. S. Aleksandrov, Ya. V. Biragova, E. S. Lisovskaya, A. A. Petrov, E. E. Danilova, I. V. Smirnov
{"title":"Sorption Recovery of Yttrium-90 from Carbonate Media","authors":"V. V. Milyutin,&nbsp;N. A. Nekrasova,&nbsp;V. O. Kaptakov,&nbsp;A. A. Naumov,&nbsp;T. S. Aleksandrov,&nbsp;Ya. V. Biragova,&nbsp;E. S. Lisovskaya,&nbsp;A. A. Petrov,&nbsp;E. E. Danilova,&nbsp;I. V. Smirnov","doi":"10.1134/S1066362226010030","DOIUrl":"10.1134/S1066362226010030","url":null,"abstract":"<p>Sorption of stable and radioactive yttrium and strontium from sodium carbonate solutions with 13 commercial organic ion exchangers and 3 inorganic sorbents was studied. Purolite S930 and Amberlite IRC 748 iminodiacetate chelating cation exchangers and Axionit RCs resorcinol–formaldehyde cation exchanger exhibit moderate (2–4 mg/g) static capacity for yttrium. With a decrease in the sodium carbonate concentration, the static capacity of both anion and cation exchangers increases. Termoxid-3K and T-50 inorganic sorbents take up <sup>90</sup>Sr from carbonate media considerably more efficiently than yttrium. Sodium carbonate solutions of concentrations higher than 1 M efficiently desorb yttrium-90 from С100 sulfonic cation exchanger and from Termoxid-3K and T-50 inorganic sorbents with virtually no washout of <sup>90</sup>Sr.</p>","PeriodicalId":747,"journal":{"name":"Radiochemistry","volume":"68 1","pages":"30 - 37"},"PeriodicalIF":1.0,"publicationDate":"2026-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147571139","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Seasonal Variations of Radon in Borewell and Pond Water Samples of Chikkaballapura District, Karnataka, India 印度卡纳塔克邦Chikkaballapura地区井水和池塘水中氡的季节变化
IF 1
Radiochemistry Pub Date : 2026-03-31 DOI: 10.1134/S1066362226010078
T. K. Ganeshprasad, Y. Srilatha, S. Suresh, G. V. Ashok Reddy, C. G. Poojitha, C. S. Kaliprasad
{"title":"Seasonal Variations of Radon in Borewell and Pond Water Samples of Chikkaballapura District, Karnataka, India","authors":"T. K. Ganeshprasad,&nbsp;Y. Srilatha,&nbsp;S. Suresh,&nbsp;G. V. Ashok Reddy,&nbsp;C. G. Poojitha,&nbsp;C. S. Kaliprasad","doi":"10.1134/S1066362226010078","DOIUrl":"10.1134/S1066362226010078","url":null,"abstract":"<p>Borewells, handpumps, and pond water sources are considered to determine the radon in water across multiple locations in the Chikkabalapura district. Water samples were assembled and analyzed using the emanometry method. The activity concentration of radon was found to vary significantly, with maximum concentrations observed in Inaminchenahalli during both monsoon (246.62 ± 1.26 Bq L<sup>–l</sup>) and winter (348.40 ± 1.49 Bq L<sup>–1</sup>) seasons. The pH of the samples was in the range from 6.67 to 8.52, and the electrical conductivity varied from 470 to 3990 µS/cm, peaking notably in certain borewell locations. Approximately 65% of samples exceeded the USEPA’s approved limit of 11.1 Bq L<sup>–1</sup> for radon concentration. Correlation analyses revealed a negative association between radon levels and pH, while no remarkable correlation was revealed with electrical conductivity. The temperature shows good positive correlation in the winter season. Moreover, more prominent inhalation and ingestion doses were assessed for residents in the Inaminchenahalli and Pathpalya regions, showing possible health issues linked to radon exposure through water ingestion.</p>","PeriodicalId":747,"journal":{"name":"Radiochemistry","volume":"68 1","pages":"62 - 68"},"PeriodicalIF":1.0,"publicationDate":"2026-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147571149","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","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 the Explosiveness of Dried Residues from Nitric Acid Solutions Containing Organic Reductants for Reprocessing of (U, Pu)N Spent Nuclear Fuel （U, Pu）N乏核燃料后处理用含有机还原剂硝酸溶液干燥残留物的爆炸性评价
IF 1
Radiochemistry Pub Date : 2026-03-31 DOI: 10.1134/S1066362226010054
M. A. Arkhipova, K. N. Dvoeglazov, L. V. Gezalyan, A. M. Koscheeva, A. V. Rodin, E. A. Kamenev, I. N. Seelev, I. E. Morozov
{"title":"Assessment of the Explosiveness of Dried Residues from Nitric Acid Solutions Containing Organic Reductants for Reprocessing of (U, Pu)N Spent Nuclear Fuel","authors":"M. A. Arkhipova,&nbsp;K. N. Dvoeglazov,&nbsp;L. V. Gezalyan,&nbsp;A. M. Koscheeva,&nbsp;A. V. Rodin,&nbsp;E. A. Kamenev,&nbsp;I. N. Seelev,&nbsp;I. E. Morozov","doi":"10.1134/S1066362226010054","DOIUrl":"10.1134/S1066362226010054","url":null,"abstract":"<p>The thermal decomposition of dried residues from nitric acid solutions containing reductants (carbohydrazide and diformylhydrazine) was studied. The dried residues were analyzed using differential scanning calorimetry and thermogravimetric analysis. It is shown that the dried residues pose a potential hazard due to exothermic decomposition and gas evolution. Recommendations for ensuring fire and explosion safety when using solutions of metal nitrate solutions in nitric acid with reductants are proposed.</p>","PeriodicalId":747,"journal":{"name":"Radiochemistry","volume":"68 1","pages":"45 - 51"},"PeriodicalIF":1.0,"publicationDate":"2026-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147571136","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Sorption of Actinides onto Carbon Nanotubes from Aqueous Solutions with High Salt Concentrations 高盐水溶液中锕系元素在碳纳米管上的吸附
IF 1
Radiochemistry Pub Date : 2026-03-31 DOI: 10.1134/S1066362226010042
A. G. Kazakov, E. Yu. Khvorostinin, S. E. Vinokurov, B. F. Myasoedov
{"title":"Sorption of Actinides onto Carbon Nanotubes from Aqueous Solutions with High Salt Concentrations","authors":"A. G. Kazakov,&nbsp;E. Yu. Khvorostinin,&nbsp;S. E. Vinokurov,&nbsp;B. F. Myasoedov","doi":"10.1134/S1066362226010042","DOIUrl":"10.1134/S1066362226010042","url":null,"abstract":"<p>Carbon nanotubes (CNTs) are widely studied as candidate sorbents for the actinide recovery from solutions of various compositions. However, the actinide sorption from solutions with high salt concentrations remains poorly studied. In this work, the effect of the salt background of solutions simulating liquid radioactive waste (LRW) aAnd natural waters on the actinide sorption onto CNTs was studied for the first time. The optimum conditions for the uranium, americium, and curium sorption regarding the pH and salt concentrations were determined. The CNTs show promise for recovering uranium from radionuclide-contaminated groundwater, river waters, and seawater and from solutions of neutralized LRW and for recovering americium and curium from groundwater and river waters.</p>","PeriodicalId":747,"journal":{"name":"Radiochemistry","volume":"68 1","pages":"38 - 44"},"PeriodicalIF":1.0,"publicationDate":"2026-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147571140","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","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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