Radiochemistry最新文献_第5页

Evaluation of the Effect of External and Internal Irradiation on the Properties of Vitrified HLW to Substantiate the Safety of Their Environmental Impact 评价外部和内部辐照对玻璃化高放废物特性的影响以证实其环境影响的安全性

IF 0.9

Radiochemistry Pub Date : 2024-10-06 DOI: 10.1134/S1066362224040167

N. P. Starovoitov, P. V. Kozlov, I. G. Tananaev, E. S. Braichun, N. A. Stakanova, M. B. Remizov, V. A. Dudkin, V. A. Kazakov, S. V. Korenev, E. V. Polyakov, N. V. Glushkova, E. A. Kinev, S. S. Zyryanov, M. N. Sarychev, A. V. Vasil’ev

引用次数: 0

Influence of Ionizıng Radiation on Physicochemical and Operational Properties of Diesel Fuel with Added Toluene 电离辐射对添加甲苯的柴油的物理化学和操作特性的影响

IF 0.9

Radiochemistry Pub Date : 2024-10-06 DOI: 10.1134/S1066362224040155

L. Y. Jabbarova, I. I. Mustafaev, A. S. Mirzaeva, N. A. Ibadov

{"title":"Influence of Ionizıng Radiation on Physicochemical and Operational Properties of Diesel Fuel with Added Toluene","authors":"L. Y. Jabbarova, I. I. Mustafaev, A. S. Mirzaeva, N. A. Ibadov","doi":"10.1134/S1066362224040155","DOIUrl":"10.1134/S1066362224040155","url":null,"abstract":"Radiation resistance of diesel fuel with the addition of various percentages of toluene was studied. The experiments were carried out for a long time to study the postpolymerization processes. The kinetics of processes during irradiation of pure diesel fuel was studied at the temperature T = 20°C and dose rate P = 0.07 Gy/s in the range of absorbed doses D = 15–150 kGy, and a mixture of toluene with diesel fuel was irradiated within the absorbed dose range D = 24–90 kGy at a toluene concentration of 1, 3, and 5 vol %. Analysis by gas chromatography–mass spectrometric (GC/MS) was performed, and the density, viscosity, and iodine number of the diesel fuel before and after irradiation at various absorbed doses were determined. The kinetics of postpolymerization processes after the end of irradiation shows that the rate of the process and its share in the total polymerization depend on the irradiation time, initial mixture density, and dose. By adding additives (antirads), one can choose the composition of diesel fuel that will better withstand radiation exposure. It is necessary to find the optimal concentration of toluene in the composition of diesel fuel, at which the viscosity and density will not change with an increase in the absorbed dose.","PeriodicalId":747,"journal":{"name":"Radiochemistry","volume":"66 4","pages":"531 - 541"},"PeriodicalIF":0.9,"publicationDate":"2024-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142410227","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 Crude Phosphoric Acid Using Activated Carbon-Based Nanocomposites Integrated with Catalytic Wet Peroxide Oxidation 利用活性碳基纳米复合材料与催化湿式过氧化物氧化相结合处理粗磷酸

IF 0.9

Radiochemistry Pub Date : 2024-10-06 DOI: 10.1134/S1066362224040064

M. N. Kouraim

引用次数: 0

Determination of 239,240Pu in Caspian Sea Water Using the Sorption–Diffusion Model of the Radionuclide Uptake by Bottom Sediments 利用底层沉积物吸收放射性核素的吸附-扩散模型测定里海海水中的 239,240Pu

IF 0.9

Radiochemistry Pub Date : 2024-10-06 DOI: 10.1134/S1066362224040180

N. A. Bakunov, A. O. Aksenov

{"title":"Determination of 239,240Pu in Caspian Sea Water Using the Sorption–Diffusion Model of the Radionuclide Uptake by Bottom Sediments","authors":"N. A. Bakunov, A. O. Aksenov","doi":"10.1134/S1066362224040180","DOIUrl":"10.1134/S1066362224040180","url":null,"abstract":"The content of global 239,240Pu in Caspian sea water (1996–2056) was calculated using the sorption–diffusion model of the radionuclide uptake by bottom sediments with the distribution coefficient Kd = 50 × 103 and diffusion coefficient D = 0.1 × 10–7 cm2/s. The 239,240Pu global fallout on the sea was assumed to be equal to the experimental value for the mid-latitude belt of Russia, 60 Bq/m2. At the plutonium fallout density on the sea surface of 58 Bq/m2, its inventory in the sea Q as of the year 1964 is 21.9 TBq. In 1996, the experimentally determined 239,240Pu concentration in Caspian sea water was ~20 μBq/L, and the calculation by the model gives 17.8 μBq/L. During the ~30-year migration of global 239,240Pu, about 93% of the radionuclide passed from the aqueous phase to bottom soils. According to the calculations, the 239,240Pu concentration in the seawater in the period 1996–2056 will decrease from 17.8 to 10.5 μBq/L, and the 239,240Pu inventory in the seawater, from 6.3 to 3.7%, of the fallout value. The results were verified using an independent method for 90Sr monitoring in Caspian sea water and determining the 239,240Pu/90Sr concentration ratio in the water. The results of estimating the 239,240Pu concentrations in the seawater (2017–2020) by these two methods reasonably agree with each other.","PeriodicalId":747,"journal":{"name":"Radiochemistry","volume":"66 4","pages":"570 - 575"},"PeriodicalIF":0.9,"publicationDate":"2024-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142410261","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

Determination of 137Cs in Natural Water and Waste Streams Using Ferrocyanide Sorbents Based on Various Supports: a Comparative Analysis 使用基于各种支持物的亚铁氰化物吸附剂测定天然水和废水中的 137Cs：对比分析

IF 0.9

Radiochemistry Pub Date : 2024-10-06 DOI: 10.1134/S1066362224040118

A. V. Voronina, A. K. Suetina

{"title":"Determination of 137Cs in Natural Water and Waste Streams Using Ferrocyanide Sorbents Based on Various Supports: a Comparative Analysis","authors":"A. V. Voronina, A. K. Suetina","doi":"10.1134/S1066362224040118","DOIUrl":"10.1134/S1066362224040118","url":null,"abstract":"The possibility of using ferrocyanide sorbents NPF-HTD, NPF-C, and T-35 for cesium concentration in the method of 137Cs determination in natural and waste waters has been investigated. Differences in sorption characteristics of sorbents and conditions of cesium concentration to achieve a chemical yield of 98–99% in the concentrate have been revealed. A variable method for determination of 137Cs in natural and waste waters has been developed, taking into account the ratio of sample volume and sorbent mass in the column, the efficiency of 137Cs detection, and the time of concentrate measurement to achieve the minimum detectable activity of 137Cs in the sample of 0.001–0.01 Bq/L. The method was tested for determination of 137Cs in waters of natural reservoirs and rivers in the territories of Sverdlovsk oblast and Chelyabinsk oblast, as well as waters of monitoring wells in the territories of long-term storage and disposal of radioactive waste. The data on the composition of river and reservoir waters are presented, and the dependence of the cesium chemical yield into the concentrate on the concentration of macrocomponents in samples is shown.","PeriodicalId":747,"journal":{"name":"Radiochemistry","volume":"66 4","pages":"493 - 505"},"PeriodicalIF":0.9,"publicationDate":"2024-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142410325","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

Neptunium(VI) Nitrate Complexes with Urea and Terpyridine Derivatives 硝酸镎（VI）与尿素和特吡啶衍生物的络合物

IF 0.9

Radiochemistry Pub Date : 2024-07-16 DOI: 10.1134/S1066362224030032

I. A. Charushnikova, M. S. Grigoriev, A.M. Fedoseev

引用次数: 0

Structure and IR Spectroscopic Study of Sodium Tris(monoiodacetato)uranilate 三（单碘乙酰氧基）尿酸钠的结构和红外光谱研究

IF 0.9

Radiochemistry Pub Date : 2024-07-16 DOI: 10.1134/S1066362224030020

V. N. Serezhkin, M. S. Grigoriev, D. S. Mitinа, V. Yu. Losev, L. B. Serezhkina

引用次数: 0

Production of 105Rh Using Electron Accelerators and a New Method for Its Recovery from Irradiated Targets 利用电子加速器生产 105Rh 以及从辐照靶中回收 105Rh 的新方法

IF 0.9

Radiochemistry Pub Date : 2024-07-16 DOI: 10.1134/S1066362224030093

A. G. Kazakov, J. S. Babenya, T. Y. Ekatova, E. Y. Khvorostinin, S. S. Belyshev, A. A. Kuznetsov, V. V. Khankin, S. E. Vinokurov, B. F. Myasoedov

引用次数: 0

Hydrogen Peroxide in the Chemistry of f-Elements f 元素化学中的过氧化氢

IF 0.9

Radiochemistry Pub Date : 2024-07-16 DOI: 10.1134/S1066362224030019

V. P. Shilov, A. M. Fedoseev, B. F. Myasoedov

{"title":"Hydrogen Peroxide in the Chemistry of f-Elements","authors":"V. P. Shilov, A. M. Fedoseev, B. F. Myasoedov","doi":"10.1134/S1066362224030019","DOIUrl":"10.1134/S1066362224030019","url":null,"abstract":"The properties of H2O2 and its reactions with lanthanide and actinide ions are considered. The potential values of pairs involving H2O2 in acidic and alkaline solutions are given. Depending on the oxidative potential of the f-element ion and pH, H2O2 exhibits oxidizing or reducing properties. The kinetics and mechanisms of reactions of H2O2 with lanthanides(II–IV) and with actinides(III–VII) in acidic, carbonate, and alkaline media have been analyzed. Ions of f-elements(III–VI) form peroxide complexes. The peroxo group occupies either one (OOH) or two (OO) coordination sites. U(VI), Np(IV) binds up to 3 peroxo groups. Oxidation or reduction reactions proceed intramolecularly. In the case of Yb2+, Sm2+, U3+, Ce4+ (in an acid solution), Pr(IV) and Am(IV) (in a weakly acidic medium), the bimolecular rate constants are 105–n × 106 L/(mol s), which exceeds the rate of ligand exchange in the coordination sphere of the f-element ion. Therefore, charge transfer occurs in the outer sphere. Coordination spheres of Ce(IV) oxalate, Tb(IV) with P2W17O6110–, and Np(VI) with NO3– slow down the charge transfer between H2O2 and the f-element ion. H2O2 arising during the radiolysis of aqueous solutions is in an excited state and is more active than H2O2 introduced from the outside. Of particular interest are the reactions of H2O2 with ions of f-elements in strongly complexing or nonaqueous (organic) media, as well as structural studies of solid compounds of peroxides of f-elements.","PeriodicalId":747,"journal":{"name":"Radiochemistry","volume":"66 3","pages":"283 - 300"},"PeriodicalIF":0.9,"publicationDate":"2024-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141719662","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 the Sorption Interaction of [3H]Hyaluronic Acid with Hydroxyapatite 3H]透明质酸与羟基磷灰石的吸附相互作用特征

IF 0.9

Radiochemistry Pub Date : 2024-07-16 DOI: 10.1134/S106636222403010X

G. A. Badun, A. V. Severin, E. A. Zaitseva

引用次数: 0