Radiochemistry最新文献_第10页

Distribution of Np, Pu, and Am in Water, Suspended Matter, and Bottom Sediments of Peter the Great Bay 彼得大帝湾水、悬浮物和底层沉积物中镎、钚和镅的分布情况

IF 0.9

Radiochemistry Pub Date : 2024-04-23 DOI: 10.1134/S1066362224010156

N. V. Kuzmenkova, V. G. Petrov, A. K. Rozhkova, E. A. Tokar, K. Shi, S. N. Kalmykov, X. Hou

引用次数: 0

Preparation of Uranium/Plutonium Oxide Solid Solution Powder from Ammonium Uranyl–Plutonyl Carbonate in a Laboratory Microwave Unit 在实验室微波装置中利用铀-钚碳酸铵制备铀/钚氧化物固溶体粉末

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Radiochemistry Pub Date : 2024-04-23 DOI: 10.1134/S1066362224010016

O. S. Dmitrieva, M. G. Dmitriev, A. Yu. Shadrin, D. A. Kapralov, A. S. Kornilov, A. A. Pylaeva, O. N. Nikitin

{"title":"Preparation of Uranium/Plutonium Oxide Solid Solution Powder from Ammonium Uranyl–Plutonyl Carbonate in a Laboratory Microwave Unit","authors":"O. S. Dmitrieva, M. G. Dmitriev, A. Yu. Shadrin, D. A. Kapralov, A. S. Kornilov, A. A. Pylaeva, O. N. Nikitin","doi":"10.1134/S1066362224010016","DOIUrl":"10.1134/S1066362224010016","url":null,"abstract":"The method of fabrication of solid solution powder of uranium/plutonium (38%) oxides from the pulp of ammonium uranyl-plutonyl carbonate process (AUPuC) by microwave radiation in reducing and atmospheric environments was proposed and tested at the laboratory level. For research the pulp was prepared, obtained by co-precipitation of uranium and plutonium from nitrate solution (simulator for stripping product). The process consists of three main stages: oxidation of Pu(IV) to Pu(VI), precipitation, and conversion in a laboratory microwave unit. According to data of the X-ray diffraction analysis the powders synthesized in a reducing atmosphere and an atmospheric environment are a solid cubic solution (UxPu1–x)O2 and (PuO2, U3O8) mixed oxide, respectively. Scanning electron microscopy and electron probe microanalysis of the powder obtained in an atmospheric environment showed a fairly uniform distribution of U, Pu, and O in the solid phase.","PeriodicalId":747,"journal":{"name":"Radiochemistry","volume":"66 1","pages":"1 - 8"},"PeriodicalIF":0.9,"publicationDate":"2024-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140804196","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}

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Effect of Irradiation on the Thermal Stability of Nitric Acid Solutions of Carbohydrazide 辐照对羧酰肼硝酸溶液热稳定性的影响

IF 0.9

Radiochemistry Pub Date : 2024-04-23 DOI: 10.1134/S1066362224010107

V. V. Kalistratova, A. S. Obedkov, E. V. Belova

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Decontaminating Power of Vybor Detergents under the Conditions of a Radiochemical Plant 放射化学工厂条件下 Vybor 清洁剂的去污能力

IF 0.9

Radiochemistry Pub Date : 2024-03-12 DOI: 10.1134/S1066362223070172

O. A. Sakhnenko, N. A. Kuznetsova, E. V. Pipkov, N. R. Gabbasova

引用次数: 0

Removal of Cs(I) and Sr(II) from Liquid Media with Crystalline Titanosilicates Prepared by Hydrothermal Synthesis 用水热合成法制备的结晶钛硅酸盐去除液体介质中的铯(I)和硒(II)

IF 0.9

Radiochemistry Pub Date : 2024-03-12 DOI: 10.1134/S1066362223070032

N. P. Ivanov, P. A. Marmaza, O. O. Shichalin, A. N. Dran’kov, V. L. Rastorguev, A. V. Marchenko, S. M. Pisarev, Ya. G. Zernov, A. Yu. Maiorov, A. N. Fedorets, E. K. Papynov

{"title":"Removal of Cs(I) and Sr(II) from Liquid Media with Crystalline Titanosilicates Prepared by Hydrothermal Synthesis","authors":"N. P. Ivanov, P. A. Marmaza, O. O. Shichalin, A. N. Dran’kov, V. L. Rastorguev, A. V. Marchenko, S. M. Pisarev, Ya. G. Zernov, A. Yu. Maiorov, A. N. Fedorets, E. K. Papynov","doi":"10.1134/S1066362223070032","DOIUrl":"10.1134/S1066362223070032","url":null,"abstract":"The water pollution with Cs+ and Sr2+ radionuclides in the nuclear fuel cycle is a pressing environmental problem. The selective adsorption of radionuclides onto inorganic sorbents of zeolite structure, exhibiting the ion-sieve effect, is a promising procedure for the treatment of the liquid radioactive waste formed. Titanosilicate of the CST structural type, corresponding to the formula Na1.64H0.36Ti2O3SiO4(H2O)1.84, was prepared by hydrothermal synthesis performed at 190°С and a pressure of 1.3 MPa for 24 h. This sorbent allows efficient removal of the Cs+ and Sr2+ cations from liquid media. The sorption exchange capacity qeq is 1.58 mg-equiv/g for Cs+ and 2.56 mg-equiv/g for Sr2+. Preliminary oxidation of Ti3+ to Ti4+ with H2O2 increases the sorption capacity for Cs+ and Sr2+. The phase composition, elemental composition, specific surface area, and pore size of the materials synthesized were determined. The titanosilicates obtained can be used as sorbents for liquid radioactive waste treatment.","PeriodicalId":747,"journal":{"name":"Radiochemistry","volume":"65 1 supplement","pages":"S29 - S35"},"PeriodicalIF":0.9,"publicationDate":"2024-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140115582","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

Development of an Automated Database as a Part of the Methodological Basis of the System for Characterization of Vitrified High-Level Waste Accumulated at the Mayak Production Association 开发自动化数据库，作为马雅克生产协会积累的玻璃化高放射性废物特征描述系统方法论基础的一部分

IF 0.9

Radiochemistry Pub Date : 2024-03-12 DOI: 10.1134/S1066362223070056

L. G. Elagina, M. B. Remizov, P. V. Kozlov, I. I. Dement’eva

引用次数: 0

Continuous Numerical Model of Polluted Groundwater Plumes in the Vicinity of LRW Storage Reservoirs Lake Karachay and Staroye Boloto of the Mayak Production Association 玛雅克生产协会卡拉恰伊湖和斯塔罗耶-博洛托低洼水体储存水库附近受污染地下水流的连续数值模型

IF 0.9

Radiochemistry Pub Date : 2024-03-12 DOI: 10.1134/S1066362223070196

A. V. Glagolev, E. G. Drozhko, A. A. Kuvayev, N. M. Kurinova, N. V. Makarova, T. V. Sukhanova

引用次数: 0

Promising Dry Mix Formulations for Cementation of the Solution Fraction of the Accumulated Alkaline High-Level Waste 用于固化累积碱性高放废物溶液部分的前景看好的干混配方

IF 0.9

Radiochemistry Pub Date : 2024-03-12 DOI: 10.1134/S1066362223070068

P. V. Kozlov, S. M. Shaidullin, K. A. Feoktistov, D. V. Markova, R. Ya. Akhtyamov, R. M. Akhmed’yanov

引用次数: 0

Radioactive Contamination of Coastal Regions due to Aqueous Aerosol Entrainment from the Techa River Area 泰恰河地区水气溶胶夹带造成的沿海地区放射性污染

IF 0.9

Radiochemistry Pub Date : 2024-03-12 DOI: 10.1134/S1066362223070123

Yu. G. Mokrov

{"title":"Radioactive Contamination of Coastal Regions due to Aqueous Aerosol Entrainment from the Techa River Area","authors":"Yu. G. Mokrov","doi":"10.1134/S1066362223070123","DOIUrl":"10.1134/S1066362223070123","url":null,"abstract":"The study is aimed at reconstruction of the parameters of the source from which the Techa River was contaminated in the period 1949–1956 and deals with the migration of γ-emitting nuclides (GENs), namely, of 95Zr and 95Nb, in the river system. The archive (1951) results of measuring the specific activity of the sum of β-emitting nuclides (BENs), AΣ (μCi/kg), in the soil and plants in the Techa riverside regions that are not flooded by floodwaters are analyzed. Analysis shows that the radioactive contamination of riverside territories is not associated with atmospheric discharges from the enterprise stacks and that the measurement results do not correspond to the commonly accepted views on the contamination distribution. In particular, contamination of the riverside soil and plants varied nonmonotonically with increasing distance from the river bank and along the river (spotty contamination pattern was observed), whereas the absolute values of BEN specific activities were constant throughout the territory within an order of magnitude. Furthermore, the depth distribution of BEN specific activities in soil up to 0.5 m was virtually uniform, and in some cases the activity increased with the depth. Finally, the plants had both external (on leaves) and internal (in roots) contamination, and in some cases the BEN specific activity in stems and leaves was lower than in roots. Presumably, the radioactive contamination of the soil and plants was determined by 95Nb and was due to entrainment of an aqueous aerosol from the river water surface with the wind. The model calculations explain all the unusual distribution patterns observed and allow estimation of the upper boundary of the mean (for summer 1951) 95Nb activity concentration in the river water.","PeriodicalId":747,"journal":{"name":"Radiochemistry","volume":"65 1 supplement","pages":"S147 - S159"},"PeriodicalIF":0.9,"publicationDate":"2024-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140115478","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

Comments to the Paper: Mokrov, Yu.G., Behavior of Niobium-95 in Techa River Water 对论文的评论Mokrov, Yu.G., Techa河水中铌-95的行为

IF 0.9

Radiochemistry Pub Date : 2024-03-12 DOI: 10.1134/S1066362223070184

M. V. Logunov

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