Radiochemistry最新文献

Estimation of the Redox Potential of Photoexcited Uranyl Ion 光激发铀酰离子氧化还原电位的估计

IF 0.9

Radiochemistry Pub Date : 2026-07-17 DOI: 10.1134/S1066362226030045

V. P. Shilov, E. V. Abkhalimov, A. M. Fedoseev

引用次数: 0

Thermodynamic Parameters of Cesium and Strontium Sorption onto a Diabase Sample from the Yeniseisky Site 叶尼泽斯基遗址辉绿岩样品中铯和锶吸附的热力学参数

IF 0.9

Radiochemistry Pub Date : 2026-07-17 DOI: 10.1134/S1066362226030094

E. Yu. Khvorostinin, A. A. Rodionova, S. A. Fimina, V. O. Yapaskurt, S. E. Vinokurov

引用次数: 0

Radiometric Assessment and Radiological Hazard Evaluation of Soil around the Mymensingh 210 MW Combined Cycle Power Plant, Bangladesh 孟加拉国Mymensingh 210兆瓦联合循环发电厂周围土壤的辐射评估和辐射危害评估

IF 0.9

Radiochemistry Pub Date : 2026-07-17 DOI: 10.1134/S106636222603015X

M. M. M. Siraz, Md. A. R. Ananda, S. K. Das, F. Alam, M. S. Alam, A. Mahmud, M. B. Rashid, M. U. Khandaker, H. Osman, S. Yeasmin

{"title":"Radiometric Assessment and Radiological Hazard Evaluation of Soil around the Mymensingh 210 MW Combined Cycle Power Plant, Bangladesh","authors":"M. M. M. Siraz, Md. A. R. Ananda, S. K. Das, F. Alam, M. S. Alam, A. Mahmud, M. B. Rashid, M. U. Khandaker, H. Osman, S. Yeasmin","doi":"10.1134/S106636222603015X","DOIUrl":"10.1134/S106636222603015X","url":null,"abstract":"This study explores the distribution and radiological impact of transporting naturally occurring radioactive materials (NORMs) in soils collected from the vicinity of the Mymensingh 210 MW Combined (heavy fuel oil/gas) Cycle Power Plant in Bangladesh. Twenty-five soil samples were systematically collected at radial distances of 250, 500, and 1000 m from the power plant to assess the spatial variation in radioactivity levels. The measured activity concentrations of 226Ra, 232Th, and 40K ranged from 18 ± 1 to 34  ±  3, from 23 ± 2 to 60 ± 5, and from 340 ± 29 to 550 ± 35 Bq/kg, respectively. Although the 226Ra level did not exceed global average values, high levels of 232Th and 40K, exceeding world average values, were revealed. Contrary to expectations of a gradual decrease in the radionuclide concentrations with increasing distance from the power station, their levels actually varied nonmonotonically. The results obtained can be explained by high variability of geological background conditions, mobility of radionuclides, and human impact on the environment. While radium equivalent activity and general hazard index were within international safety standards, some samples exceeded these values, which could lead to a potential threat to public health. Multivariate statistics analysis showed that 226Ra and 232Th were the main factors causing radiological hazard in the research area, whereas 40K showed completely different behavior and formed a special cluster due to the presence of other geochemical processes related to its formation.","PeriodicalId":747,"journal":{"name":"Radiochemistry","volume":"68 3","pages":"416 - 429"},"PeriodicalIF":0.9,"publicationDate":"2026-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148459129","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 Properties of Rocks as a Potential Component for Backfill of High-Level Waste Underground Repository 高放废物地下储存库潜在回填组分岩石的吸附特性

IF 0.9

Radiochemistry Pub Date : 2026-07-17 DOI: 10.1134/S1066362226030021

S. V. Yudintsev

{"title":"Sorption Properties of Rocks as a Potential Component for Backfill of High-Level Waste Underground Repository","authors":"S. V. Yudintsev","doi":"10.1134/S1066362226030021","DOIUrl":"10.1134/S1066362226030021","url":null,"abstract":"High-level nuclear waste containing long-lived radionuclides must be reliably contained in a deep underground storage facility. Its safety will be ensured by a system of artificial engineered barriers and the surrounding geological environment. Backfill is one of the least studied barriers, and it is often considered in conjunction with a bentonite buffer. However, it has its own tasks: fixing the position of the buffer and waste container, stabilizing tunnels and galleries, decreasing their permeability and thermal conductivity, maintaining groundwater Eh and pH to reduce the solubility and enhance the sorption of radionuclides, and preventing their migration as colloids on bentonite particles derived from the buffer erosion. Clays, bentonite, zeolites, cement, and a mixture of bentonite and crushed rock were proposed previously as potential backfill materials. One of the requirements to the backfill is its compatibility with the geological environment, which is met by the crushed rocks around the repository. High sorption properties of such rocks for radionuclides significantly reduce the radionuclide washout by water from the repository into the biosphere.","PeriodicalId":747,"journal":{"name":"Radiochemistry","volume":"68 3","pages":"297 - 309"},"PeriodicalIF":0.9,"publicationDate":"2026-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148459182","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

Treatment of Decontamination Solutions for VVER-1200 Reactors to Remove Radionuclides VVER-1200反应堆去污液去除放射性核素的处理

IF 0.9

Radiochemistry Pub Date : 2026-07-17 DOI: 10.1134/S1066362226030100

A. E. Savkin, Yu. T. Slastennikov, E. E. Ostashkina

{"title":"Treatment of Decontamination Solutions for VVER-1200 Reactors to Remove Radionuclides","authors":"A. E. Savkin, Yu. T. Slastennikov, E. E. Ostashkina","doi":"10.1134/S1066362226030100","DOIUrl":"10.1134/S1066362226030100","url":null,"abstract":"A process was developed for the treatment of decontamination solutions (DSs) from nuclear power plants (NPPs) equipped with VVER-1200 reactors, Novovoronezh NPP-2 (NVNPP-2) and Leningrad NPP-2 (LNPP-2), to remove the main radionuclides using sorption, precipitation, destructive, and membrane methods. The NVNPP-2 DS contains such radionuclides as 124,125Sb, 137,134Cs, 60Co, 54Mn, etc. The specific activity of the major radionuclides, 125Sb, 60Co, and 54Mn, is n × 103 Bq/dm3, рН is 2–12, and the concentration of salts is 5–12 g/dm3 (major components: sodium nitrate, oxalates, and carbonates). In LNPP-2 DS, the major radionuclide is 110mAg (1.6 × 105 Bq/dm3). The suggested flowsheet for the decontamination of NVNPP-2 and LNPP-2 DSs to remove radionuclides involves pH adjustment, filtration to separate the precipitate, ozonation, filtration, repeated pH adjustment, and sorption onto T-35. The resulting filtrate after the evaporation to dry salts has the total specific α-activity of <120 Bq/kg and the β-activity of 1000–10000 Bq/kg, mainly due to the presence of natural 40K.","PeriodicalId":747,"journal":{"name":"Radiochemistry","volume":"68 3","pages":"367 - 373"},"PeriodicalIF":0.9,"publicationDate":"2026-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148459184","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

Comparison of Perfluorooctanoic and Alkylbenzenesulfonic Acids in Radionuclide Extraction into Liquefied Freon HFC-134a 全氟辛酸和烷基苯磺酸萃取液化氟利昂HFC-134a中放射性核素的比较

IF 0.9

Radiochemistry Pub Date : 2026-07-17 DOI: 10.1134/S1066362226030069

A. M. Fedotov, A. Yu. Nikolaev, V. A. Babain, A. A. Murzin, N. E. Mishina

引用次数: 0

Potential of RadioHPLC for the Purification of [18F]anle138b, a Candidate Radiotracer for PET Diagnostics of Parkinson’s Disease 放射高效液相色谱法纯化帕金森病PET诊断候选示踪剂[18F]anle138b的潜力

IF 0.9

Radiochemistry Pub Date : 2026-07-17 DOI: 10.1134/S1066362226030124

O. S. Fedorova, V. V. Orlovskaya, R. N. Krasikova

引用次数: 0

Radiosynthesis and Preclinical Evaluation of [99mTc]Tc-HYNIC-anti-TIGIT for Immuno-SPECT Imaging [99mTc]Tc-HYNIC-anti-TIGIT用于免疫spect成像的放射合成及临床前评价

IF 0.9

Radiochemistry Pub Date : 2026-07-17 DOI: 10.1134/S1066362226030112

F. Amjad, S. Q. Shah, R. Santos-Oliveira

{"title":"Radiosynthesis and Preclinical Evaluation of [99mTc]Tc-HYNIC-anti-TIGIT for Immuno-SPECT Imaging","authors":"F. Amjad, S. Q. Shah, R. Santos-Oliveira","doi":"10.1134/S1066362226030112","DOIUrl":"10.1134/S1066362226030112","url":null,"abstract":"T-cell immunoreceptor with Ig and ITIM domains (TIGIT) is a newly identified immune checkpoint involved in tumor immune evasion; it represents a promising target for cancer immunotherapy. Noninvasive in vivo imaging of TIGIT expression may provide valuable insights into the tumor immune microenvironment and facilitate the evaluation of TIGIT-targeted therapies. In this study, tiragolumab (anti-TIGIT monoclonal antibody) was conjugated with HYNIC and radiolabeled with 99mTc using an EDDA/tricine coligand system under optimized mild conditions. Radiochemical purity and stability were assessed by ITLC and SEC-HPLC, while the chelator-to-antibody ratio (CAR) was determined using MALDI-TOF. In vitro binding was evaluated using saturation binding assays in TIGIT-expressing Jurkat cells, and the immunoreactivity was evaluated by Lindmo analysis. Biodistribution and small-animal SPECT imaging were conducted in a Jurkat tumor-bearing mouse model. The radioconjugate was obtained with a radiochemical yield of 64.2 ± 1.7%. It exhibited high radiochemical purity (>98%) along with good stability under physiological conditions. Saturation binding studies showed concentration-dependent and saturable binding to Jurkat cells, with a dissociation constant of Kd = 0.82 ± 0.11 nM and a maximum binding capacity of Bmax = 18.3 ± 1.6 fmol/106 cells, indicating high-affinity interaction. The immunoreactive fraction was 0.85 ± 0.03. In vivo biodistribution demonstrated progressive tumor accumulation, reaching 11.7 ± 1.4% ID/g at 4 h. SPECT imaging enabled clear visualization of tumors with improving contrast over time. [99mTc]Tc-HYNIC-anti-TIGIT was successfully prepared using a HYNIC-based radiolabeling strategy. It enables visualization of TIGIT expression in a preclinical model, supporting its potential as a radiopharmaceutical platform for immuno-SPECT imaging.","PeriodicalId":747,"journal":{"name":"Radiochemistry","volume":"68 3","pages":"374 - 387"},"PeriodicalIF":0.9,"publicationDate":"2026-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148459118","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

Features of Intermolecular Interactions in the Structures of Mn, Tc, and Re Carbonyl Halides Mn、Tc和Re羰基卤化物结构中分子间相互作用的特征

IF 0.9

Radiochemistry Pub Date : 2026-07-17 DOI: 10.1134/S1066362226030033

G. V. Sidorenko, L. B. Serezhkina, S. V. Kondrashkin, V. N. Serezhkin

引用次数: 0

Natural Radioactivity in Core Samples from Titas and Rashidpur Gas Fields, Bangladesh 孟加拉Titas和Rashidpur天然气田岩心样本的天然放射性

IF 0.9

Radiochemistry Pub Date : 2026-07-17 DOI: 10.1134/S1066362226030161

M. Begum, M. M. M. Siraz, M. B. Rashid, S. M. S. Salekin, M. S. Alam, H. Osman, R. Khan, K. Naher, M. U. Khandaker

{"title":"Natural Radioactivity in Core Samples from Titas and Rashidpur Gas Fields, Bangladesh","authors":"M. Begum, M. M. M. Siraz, M. B. Rashid, S. M. S. Salekin, M. S. Alam, H. Osman, R. Khan, K. Naher, M. U. Khandaker","doi":"10.1134/S1066362226030161","DOIUrl":"10.1134/S1066362226030161","url":null,"abstract":"This study presents a comparative analysis of natural radioactivity and radiological hazard parameters in core samples from the Titas and Rashidpur gas fields, Bangladesh, determined using a high-purity germanium (HPGe) detector. Six core samples from Titas (depths: 2713–2784 m) and four from Rashidpur (depths: 1454–2896 m) were analyzed for the activity concentrations of 226Ra, 232Th, and 40K. The radionuclide concentrations in Titas range from 17 ± 2 to 64 ± 4 Bq/kg for 226Ra, 43 ± 3 to 109 ± 4 Bq/kg for 232Th, and 787 ± 47 to 2701 ± 70 Bq/kg for 40K; while in Rashidpur, the concentrations of ²²⁶Ra range from 32 ± 3 to 52 ± 3 Bq/kg; those of 232Th, from 48 ± 3 to 88 ± 4 Bq/kg; and those of 40K, from 660 ± 33 to 1737 ± 63 Bq/kg, both surpassing the global average significantly. Assessment of radiological hazard parameters indicates that some values in the Titas samples and a few in the Rashidpur samples exceed internationally recommended reference levels. These findings highlight the importance of continued monitoring and suggest that caution should be exercised when handling or utilizing materials from these gas fields for any purpose.","PeriodicalId":747,"journal":{"name":"Radiochemistry","volume":"68 3","pages":"430 - 441"},"PeriodicalIF":0.9,"publicationDate":"2026-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148459127","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