Radiochemistry最新文献_第2页

Sorption Equilibria of Cr(VI), Mo(VI), Se(IV), and Re(VII) Oxo Ions with TiO2||C Oxide–Graphene Composite Cr(VI), Mo(VI), Se(IV), Re（VII）氧离子在TiO2 bb| -石墨烯复合材料上的吸附平衡

IF 0.9

Radiochemistry Pub Date : 2026-07-17 DOI: 10.1134/S1066362226030082

E. V. Polyakov, I. V. Volkov, A. A. Ioshin, V. N. Krasil’nikov

{"title":"Sorption Equilibria of Cr(VI), Mo(VI), Se(IV), and Re(VII) Oxo Ions with TiO2||C Oxide–Graphene Composite","authors":"E. V. Polyakov, I. V. Volkov, A. A. Ioshin, V. N. Krasil’nikov","doi":"10.1134/S1066362226030082","DOIUrl":"10.1134/S1066362226030082","url":null,"abstract":"The equilibrium mechanism of sorption interaction of CrO42–, MoO42–, SeO32–, and ReO4– ions with surface functional centers of the graphene–oxide composite TiO2||C was established. The anion sorption isotherms are described by the Langmuir model for a monoenergetic sorbent with the Henry region at concentrations below 1 μM. The pH dependences of the anion distribution coefficient Kd are dome-shaped with a maximum at pH in the range 3–4. At pH in the range 2–6, the composite exhibits the properties of a collective action sorbent for the oxo anions studied with logKd [mL/g] ≈ 2–5. A mechanism of oxo anion sorption based on the 2-pK model of surface complexation of anions by the sorption sites of the composite is proposed. The sorption mechanism suggests that the affinity of the nonprotonated anion for sorption sites in the pH range studied significantly exceeds that of the protonated species. As a result, the parameters of the surface complexation of anions KM(0,1,2) are independent of the protonation constants of anions in the solution and remain constant, but different for the sorption sites Ti–OH2+, Ti–OН, and Ti-O– of the composite. Based on the modeling results, a predictive calculation of the sorption isotherm of the Sb(OH)6– anion by the composite as a function of pH was performed. Qualitative agreement of the calculation results with published data was demonstrated.","PeriodicalId":747,"journal":{"name":"Radiochemistry","volume":"68 3","pages":"350 - 358"},"PeriodicalIF":0.9,"publicationDate":"2026-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148459130","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

Technetium Carbonyl Compounds in Chemistry and Nuclear Medicine: Recent Advances 化学和核医学中的锝羰基化合物：最新进展

IF 0.9

Radiochemistry Pub Date : 2026-07-17 DOI: 10.1134/S106636222603001X

G. V. Sidorenko, M. Yu. Tyupina

引用次数: 0

Sorption of f-Elements onto Sorbents with Synergistic Interaction of a Phosphorus-Containing Polymer Matrix and TODGA 含磷聚合物基质与TODGA协同作用下f元素在吸附剂上的吸附

IF 0.9

Radiochemistry Pub Date : 2026-07-17 DOI: 10.1134/S1066362226030070

D. A. Lopatin, K. S. Domnikov, S. I. Antonova, M. A. Gerasimov, A. V. Gopin, E. M. Chistyakov, N. E. Borisova, P. I. Matveev

引用次数: 0

Radiological Assessment of Gross Alpha and Beta Activities in Groundwater and Associated Health Risks in Central Saudi Arabia 沙特阿拉伯中部地下水中总α和β活性及相关健康风险的放射评估

IF 0.9

Radiochemistry Pub Date : 2026-07-17 DOI: 10.1134/S1066362226030148

S. Alashrah, A. El-Taher

{"title":"Radiological Assessment of Gross Alpha and Beta Activities in Groundwater and Associated Health Risks in Central Saudi Arabia","authors":"S. Alashrah, A. El-Taher","doi":"10.1134/S1066362226030148","DOIUrl":"10.1134/S1066362226030148","url":null,"abstract":"This study presents an assessment of gross alpha and beta radioactivity levels in groundwater samples collected from the Al-Gwaa region in central Saudi Arabia and evaluates the associated radiological health risks. A total of 19 groundwater samples were collected from wells and analyzed using a low-background gas proportional alpha/beta counting system. The measured gross alpha activity concentrations ranged from 0.12 to 1.68 Bq/L with an average value of 0.55 Bq/L, while gross beta activities varied from 0.16 to 2.70 Bq/L with a mean value of 0.86 Bq/L. Several groundwater samples exceeded the World Health Organization (WHO) recommended screening levels of 0.1 Bq/L for gross alpha and 1.0 Bq/L for gross beta activities. Total dissolved solids (TDS) ranged between 312 and 3350 mg/L with an average value of 817 mg/L, indicating elevated mineralization in some groundwater sources. The calculated annual effective dose (AED) and excess lifetime cancer risk (ELCR) values revealed that some sampling locations may pose potential radiological health risks due to long-term groundwater consumption. The elevated radioactivity levels are mainly attributed to naturally occurring radionuclides associated with the geological formations of the aquifer system studied. Continuous radiological monitoring and detailed radionuclide investigations are therefore recommended to ensure groundwater safety in the region.","PeriodicalId":747,"journal":{"name":"Radiochemistry","volume":"68 3","pages":"409 - 415"},"PeriodicalIF":0.9,"publicationDate":"2026-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148459128","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

Altitude-Dependent Deposition of 137Cs Radionuclide in Soils of the Mountains of Koya District in the Kurdistan Region, Iraq 伊拉克库尔德斯坦地区Koya山区土壤中137Cs放射性核素的海拔依赖性沉积

IF 0.9

Radiochemistry Pub Date : 2026-07-17 DOI: 10.1134/S1066362226030136

S. Z. Sedeeq, J. M. Smail, S. T. Ahmad

引用次数: 0

Extraction of U(VI), Th(IV), and Lanthanides(III) from Nitric Acid Solutions with a Complex of Diphenyl(dibutylcarbamoylmethyl)phosphine Oxide with Di(2-ethylhexyl) Hydrogen Sulfosuccinate 用二苯基（二丁基氨基甲酰甲基）氧化膦和二（2-乙基己基）琥珀酸氢磺酸络合物从硝酸溶液中萃取U（VI）、Th（IV）和镧系元素(III

IF 0.9

Radiochemistry Pub Date : 2026-07-17 DOI: 10.1134/S1066362226030057

A. N. Turanov, V. K. Karandashev

引用次数: 0

Disturbance of the 90Sr–90Y Radioactive Equilibrium in Water and Phytoplankton 水体和浮游植物90Sr-90Y放射性平衡的扰动

IF 1

Radiochemistry Pub Date : 2026-05-26 DOI: 10.1134/S1066362226020104

K. Yu. Mokrov

{"title":"Disturbance of the 90Sr–90Y Radioactive Equilibrium in Water and Phytoplankton","authors":"K. Yu. Mokrov","doi":"10.1134/S1066362226020104","DOIUrl":"10.1134/S1066362226020104","url":null,"abstract":"The causes of the disturbance of the radioactive equilibrium between long-lived parent 90Sr and short-lived daughter 90Y in water and aquatic microbiota of V-2 natural reservoir (Lake Kysyl-Tash), serving as a nuclear facility and a liquid radioactive waste repository, are discussed, and the extent of this disturbance is estimated. A sample of green foam taken from the reservoir surface, containing various phytoplankton species, was used as microbiota. Radiometric measurements with variation of the exposure time and processing of the decay/accumulation curves were performed to determine the 90Sr and 90Y activities in water and in the microbiota filtered off using the blue band paper filter. By the moment of sampling, the 90Y/90Sr specific activity ratio was ~0.5 in water and ~50 in microbiota (the contribution of the 90Y to the total activity of β-emitting nuclides was ~98%), with the 90Sr and 137Cs activities making up ~1.5 and ~0.5%, respectively. The specific activity of the most finely dispersed fraction of the microbiota, obtained after filtration, reaches 31 kBq/g, exceeding by a factor of ~20000 the specific activity of 90Sr in V-2 water. The results obtained should be taken into account when estimating the dose to microbiota.","PeriodicalId":747,"journal":{"name":"Radiochemistry","volume":"68 2","pages":"189 - 195"},"PeriodicalIF":1.0,"publicationDate":"2026-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148009840","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

Synthesis and of Actinide-Containing Sodium Alumophosphate Matrices and Their Leaching in the Presence of Bentonite 含锕系元素铝磷酸钠基质的合成及其在膨润土存在下的浸出

IF 1

Radiochemistry Pub Date : 2026-05-26 DOI: 10.1134/S1066362226020062

Yu. V. Konevnik, K. V. Martynov, E. V. Zakharova, S. A. Kulyukhin, N. I. Rodygina

引用次数: 0

Process for Producing 177Lu Solutions by Irradiation at the IRT-T Reactor, Followed by Gradient Elution IRT-T反应器辐照后梯度洗脱制备177Lu溶液的工艺

IF 1

Radiochemistry Pub Date : 2026-05-26 DOI: 10.1134/S1066362226020086

I. A. Ushakov, V. V. Zukau, V. S. Makarov, A. G. Kazakov, T. Yu. Ekatova

引用次数: 0

Measurement and Exposure Assessment of Radon and Thoron Gas in Rock from Different Locations in Northern Iraq 伊拉克北部不同地点岩石中氡、钍气的测量与暴露评价

IF 1

Radiochemistry Pub Date : 2026-05-26 DOI: 10.1134/S1066362226020116

H. M. Qadr

{"title":"Measurement and Exposure Assessment of Radon and Thoron Gas in Rock from Different Locations in Northern Iraq","authors":"H. M. Qadr","doi":"10.1134/S1066362226020116","DOIUrl":"10.1134/S1066362226020116","url":null,"abstract":"Naturally occurring radioactive gases in rock, 222Rn and 220Rn, play a significant role in influencing the local air quality and pose potential health risks to nearby populations. Activities that disturb the Earth’s surface, such as excavation, can further enhance the release of these gases, thereby increasing the exposure risk. This study provides a comprehensive radiological assessment of rock samples collected from various locations across the Raparin region in northern Iraq, with the primary objective of quantifying 222Rn and 220Rn concentrations. Gas emissions were measured through alpha particle track detection using passive detectors. To reveal and enlarge the alpha tracks, the detectors were chemically etched in a 6.25 N NaOH solution at 70 ± 1°C for 8 h. The resulting tracks were then analyzed microscopically to determine 222Rn and 220Rn concentrations. The findings show that the mean concentrations of 222Rn and 220Rn in rock samples were 501 ± 80 and  509 ± 95 Bq m–3, respectively. All the measured values were within internationally accepted safety limits except Rezena and Kawbin samples. Radiological hazard indices for 222Rn and 220Rn were calculated for the rock samples and compared with international standards to assess the potential health risks. This study provides essential baseline data for the Raparin region, supporting public health initiatives and informing 222Rn and 220Rn risk management strategies across Iraqi Kurdistan.","PeriodicalId":747,"journal":{"name":"Radiochemistry","volume":"68 2","pages":"196 - 206"},"PeriodicalIF":1.0,"publicationDate":"2026-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148009802","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