
显示样式: 排序: IF: - GO 导出
-
Evaluation of 99m Tc-labeled glutathione as a colon cancer targeting probe J. Radioanal. Nucl. Chem. (IF 1.137) Pub Date : 2021-01-20 Sumeera Sidiq, Ravi Ranjan Kumar, Neelima D. Passi, D. K. Dhawan, Jaya Shukla, B. R. Mittal, Vijayta D. Chadha
The present study was designed to unravel the bioevaluation of [99mTc]Tc-GSH in HT 29 colon cancer cell line as well as in experimentally induced colon cancer. The radiochemical yield was observed to be 95.93 ± 1.09%. In silico docking studies revealed that [99mTc]Tc-GSH gets well accommodated in the binding pocket of gamma-glutamyl transpeptidase in comparable orientation with lowest estimated binding
-
Rapid dissolution of PuO 2 analytical samples using mediated electrochemical oxidation J. Radioanal. Nucl. Chem. (IF 1.137) Pub Date : 2021-01-20 Michael E. Woods, Paul D. Benny, Aaron J. Unger, Supathorn Phongikaroon, Kristian G. Myhre
Current methods for quantitative dissolution of solid PuO2 involve lengthy dissolution times. The adaptation of mediated electrochemical oxidation, which uses an electrochemically produced oxidizing agent to catalyze dissolution, has been explored for radiochemical analysis scale dissolutions of PuO2. The effects of temperature, electrode material, and electrocatalyst on the dissolution kinetics were
-
Decomposition of continuous soil–gas radon time series data observed at Dharamshala region of NW Himalayas, India for seismic studies J. Radioanal. Nucl. Chem. (IF 1.137) Pub Date : 2021-01-20 Sunil Dhar, Surjeet Singh Randhawa, Arvind Kumar, Vivek Walia, Ching-Chou Fu, Harish Bharti, Arun Kumar
Soil–gas radon time series data has been generated at Dharamshala station for seismic studies in NW Himalayas, India. Compared with the influence of temperature and pressure, radon and rainfall have shown a strong correlation. Decomposition of radon time series into three component series (seasonal, trend, and residual) has been done for further recognizing the authentic anomalous values. The irregular
-
Study on the adsorption of strontium on granular manganese oxide J. Radioanal. Nucl. Chem. (IF 1.137) Pub Date : 2021-01-20 A. I. Matskevich, E. A. Tokar’, N. P. Ivanov, T. A. Sokolnitskaya, Yu. A. Parot’kina, A. N. Dran’kov, V. E. Silant’ev, A. M. Egorin
A number of optimal parameters determining the efficiency and rate of the strontium removal by a granular sorbent synthesized by the interaction of KMnO4 and concentrated H2O2 solution have been determined. The optimal drying temperature was found to be 400 °C at an average grain size of 0.1–0.2 mm. The average value of the strontium distribution coefficient in seawater equaled to 1.4–1.5 × 103 mL/g
-
Large-scale dissolution of sintered Mo disks J. Radioanal. Nucl. Chem. (IF 1.137) Pub Date : 2021-01-20 Peter Tkac, David A. Rotsch, Sergey D. Chemerisov, James P. Byrnes, James L. Bailey, Stanley G. Wiedmeyer
Non-uranium production of 99Mo via neutron capture or by photonuclear reaction using an electron accelerator is receiving considerable attention. For commercial production of 99Mo, post-irradiation processes must incorporate a robust design for easy scale-up. Once developed, large-scale chemical processes must be optimized for hot-cell operations and potential automation. Here we present experimental
-
Radiation dose calculation of fine and coarse coal fly ash used for building purposes J. Radioanal. Nucl. Chem. (IF 1.137) Pub Date : 2021-01-20 Miguel Ángel Sanjuán, José A. Suarez-Navarro, Cristina Argiz, Esteban Estévez
Coal fly ash (CFA) samples used in building construction were assessed for natural radioactivity by gamma-ray spectrometry analysis. Activity concentrations in the original CFA sample were 101, 55.5 and 493 Bq kg−1 for 226Ra, 232Th and 40K, respectively. They were compared with the activity concentrations measured in five fineness ranges (from < 45 to > 200 µm). Then, the finer the CFA is, the higher
-
The study of radium and polonium sorption by a thin-layer MnO 2 -CTA sorbent J. Radioanal. Nucl. Chem. (IF 1.137) Pub Date : 2021-01-20 Vladimir S. Semenishchev, Lyubov A. Tomashova, Svetlana M. Titova
The work focuses on sorption of radium-223 and polonium-210 by a thin-layer MnO2-CTA sorbent. The maximal sorption of Ra (≈ 80%) and Po (≈ 12%) was achieved after 1 day of sorption. For Ra, decrease of quality of alpha spectrum was observed during sorption that can be explained by its diffusion into MnO2 and support layers. The average thickness of the sorption layer was determined to be 456 nm, whereas
-
Preparation of 90 Y by a 90 Sr- 90 Y chromatographic generator using combined columns containing Sr resin and DGA resin for radionuclide therapy J. Radioanal. Nucl. Chem. (IF 1.137) Pub Date : 2021-01-20 Hosein Poorbaygi, Ali Roozbahani, Kourosh Moradi, Ali A. Habibpanah, Behnam Pooremad
We developed and tested a 90Sr/90Y generator that using combined columns containing Sr resin and DGA resin. The chromatographic columns were fabricated and then packed with resin contents. Optimization of the columns based on HNO3 and HCl media carried out. The results showed that the value of 90Y with respect to 90Sr for final product was 5 × 106 with a high efficiency of separation (> 99%). The results
-
Treatment of dose nonuniformity inside star apples irradiated by 10 MeV electron beam J. Radioanal. Nucl. Chem. (IF 1.137) Pub Date : 2021-01-20 Van-Chung Cao, Thi Ly Nguyen, Thi Thu Hong Pham, Thi The Doan, Han-Tuong Luc, Nhut-Huan Phan, Giang T. T. Phan, Trung H. Duong, Hoai-Nam Tran
A treatment of dose nonuniformity inside Lo Ren and purple star apples irradiated by 10 MeV electron beam accelerator has been proposed by using medium density fiberboards (MDF). The dose uniformity ratios (DURs) inside the Lo Ren and purple star apples were estimated as 2.47–2.48 and 2.18–2.22, respectively. To reduce the DURs, the arrangement and the thickness of the MDF boards were determined by
-
Evaluation of iodine speciation and 129 I/ 127 I ratios at low concentrations in environmental samples using IC-ICP-MS J. Radioanal. Nucl. Chem. (IF 1.137) Pub Date : 2021-01-07 Sara R. Kimmig, Christopher Thompson, Steven Baum, Christopher F. Brown
Subterranean radioiodine contamination at the Hanford Site in Washington State is believed to be present as iodide, iodate, and organo-I species, with iodate being the predominant form. Because these species have different sediment-sorption characteristics, understanding their distribution is important for developing an accurate understanding of iodine migration in the subsurface. Herein, we report
-
Gamma irradiation induced microstructural modification and electrical conductivity of bakelite resistive plate chamber material J. Radioanal. Nucl. Chem. (IF 1.137) Pub Date : 2021-01-06 K. V. Aneesh Kumar, M. Raghavendra, Vinayakprasanna N. Hegde, A. P. Gnana Prakash, H. B. Ravikumar
Polymer-based Bakelite resistive plate chamber detector samples were exposed to 60Co gamma source for various irradiation doses. To explore the impact of gamma irradiation induced structural modifications, Positron annihilation lifetime, Fourier transform infrared spectroscopic and X-ray diffraction (XRD) studies were performed. The increased free volume (Vf) for lower irradiation doses is attributed
-
Characterization of atmospheric 210 Pb concentration and its relation to major ion species at Tsukuba, Japan J. Radioanal. Nucl. Chem. (IF 1.137) Pub Date : 2021-01-06 Naofumi Akata, Chie Iwata, Miki Nakada, Masahiro Tanaka, Hideki Kakiuchi, Tibor Kovács, Fumitaka Yanagisawa, Yutaka Kanai
TSP and atmospheric 210Pb concentrations were observed at Tsukuba, Japan during July 2001 to March 2005. TSP concentrations ranged from 14.5 to 152.4 µg m−3. 210Pb concentrations ranged from 0.04 to 0.86 mBq m−3 which was low in summer and high in winter to spring. Although TSP concentrations changed annually, 210Pb concentrations had almost the same concentration level and seasonal variation. The
-
Nuclear forensic signatures and structural analysis of uranyl oxalate, its products of thermal decomposition and Fe impurity dopant J. Radioanal. Nucl. Chem. (IF 1.137) Pub Date : 2021-01-06 Nathan B. A. Thompson, Martin C. Stennett, Matthew R. Gilbert, Neil C. Hyatt
Uranyl oxalate (UO2C2O4·xH2O) may exist at the back-end of the nuclear fuel cycle (NFC) as an intermediate in spent fuel reprocessing. The conditions used in aqueous reprocessing and thermal treatment can affect the physical and chemical properties of the material. Furthermore, trace impurities, such as Fe, may incorporate into the structure of these materials. In nuclear forensics, understanding relationships
-
Measurement of k 0 values for europium, lutetium and iridium at FRM II with a very well thermalized neutron spectrum J. Radioanal. Nucl. Chem. (IF 1.137) Pub Date : 2021-01-06 Xiaosong Li, Robbert van Sluijs, Gregory Kennedy
The k0 values of 6 non-1/v nuclides (152Eu, 152mEu, 154Eu, 177Lu, 192Ir and 194Ir) were determined using the extended Høgdahl formalism at the research reactor FRM II with very high f values. Standards were irradiated in 4 channels at different local temperatures between 40 °C and 55 °C measured using temperature sensitive irreversible labels. A good agreement with the recommended values was found
-
A statistical evaluation of the liquid effluent release from NPP based on analytical methods with low detection limits J. Radioanal. Nucl. Chem. (IF 1.137) Pub Date : 2021-01-06 Yan-Jun Huang, Fan Zeng, Jing Jiang, Lian-Sheng Wu, Zhi-Hong Shang-Guan, Zhao-Wen Zhu, Xin-Hua Liu, Bing Zhang, Wei-Wei Zuo
Eight liquid effluent samples from nuclear power plants (NPP) were analyzed for 63Ni, 131I, and gamma radionuclides using methods with low detection limits. The sum of the radionuclides activity concentrations of the effluent samples from NPPs A and B were closely lower than the operator’s results with a maximum of decreasing to 29%, while from NPP C were much lower with a maximum of decreasing to
-
Indoor radon levels in Hungarian kindergartens J. Radioanal. Nucl. Chem. (IF 1.137) Pub Date : 2021-01-06 Anita Csordás, Katalin Zsuzsanna Szabó, Zoltán Sas, Erika Kocsis, Tibor Kovács
Annual average indoor radon activity concentration was studied in 88 Hungarian kindergartens in 76 towns of 10 different counties. Annual average indoor radon activity concentration in the kindergartens was 61 Bq m− 3, maximum was 160 Bq m− 3. In the kindergartens the seasonal variation of radon is not so strong like in dwellings, because of the permanent ventilation and the closed period during the
-
Experimental study of the damage evolution and radon exhalation characteristics of quasi-uranium ore under constant amplitude cyclic loading and unloading J. Radioanal. Nucl. Chem. (IF 1.137) Pub Date : 2021-01-05 Fuliang Jiang, Haonan Wu, Jintao Guo, Yong Liu, Zhe Wang, Biao Tan, Caiwo Luo
Cyclic loading damage in uranium mining is often accompanied by changes in radon exhalation characteristics. Understanding the relationship between rock damage and radon exhalation of uranium ore is therefore important for predicting rock instability and improving monitoring methods to ensure the safety of uranium mines and other underground projects. In this study, we performed constant amplitude
-
Electron spin resonance signal of human nails: increase after irradiation J. Radioanal. Nucl. Chem. (IF 1.137) Pub Date : 2021-01-05 Seiko Hirota, Chryzel A. B. Gonzales, Hiroshi Yasuda, Ichiro Yamaguchi, Shin Toyoda
We report the phenomenon whereby the electron spin resonance signal of human nails intensify after irradiation. Forty nail samples from three donors were divided into three groups (X-ray irradiated, γ-ray irradiated, and control). The extent of signal intensified after irradiation was proportional to the given dose under 11% humidity at 20 °C. This result seemed to contradict previous studies, reporting
-
Development of HCl-free solid-phase extraction combined with ICP-MS/MS for rapid assessment of difficult-to-measure radionuclides. Part I: Selective measurement of 93 Zr and 93 Mo in concrete rubble J. Radioanal. Nucl. Chem. (IF 1.137) Pub Date : 2021-01-05 Van-Khoai Do, Takahiro Furuse, Erina Murakami, Rena Aita, Yuki Ohta, Soichi Sato
A new HCl-free chromatographic separation procedure has been developed for sequential separation of Zr and Mo from concrete matrices for selective measurement of 93Zr and 93Mo by ICP-MS/MS. The recoveries of greater than 90% for Zr and Mo from concretes could be achieved. The measurement condition was optimized for complete suppression of interferences from 93Nb and peak tailing from abundant isotopes
-
Evaluation of uranium containing ground water quality and non-carcinogenic risk assessment in inhabitant of Bijapur District of Chhattisgarh, Central India J. Radioanal. Nucl. Chem. (IF 1.137) Pub Date : 2021-01-05 Mayank Singh, Kavita Tapadia, Dalchand Jhariya, Pokhraj Sahu
The present investigation focused on evaluation of uranium containing water quality and non-carcinogenic risk. The uranium was determined in the fifty-three groundwater samples ranged between 0.21 and 10.04 µg/L. The 30% of groundwater samples surpass the recommended limits (1.9 μg/L) and the chronic daily intake also exceeded recommended reference dose (0.6 µg/kg/day) in 6–6% samples for Infant and
-
A potential refinement of water endangered with Zn-65 onto modified zeolite J. Radioanal. Nucl. Chem. (IF 1.137) Pub Date : 2021-01-04 Eva Chmielewská, Wlodzimierz Tylus
The recently synthesized mono- and bimetallic Fe and Mn oxides supported zeolite of clinoptilolite type, characterized with FT-IR, XRD, SEM–EDS and XPS spectroscopy, confirmed the occurrence of a new MnO2 phase (pyrolusite, birnessite) including mostly amorphous iron oxi(hydr)oxide FeO(OH) species on the surface. The product validated a much higher adsorption capacity toward Zn-65 pollutant compared
-
Improved dehydration performance of tofu protein by ionizing irradiation pretreatment J. Radioanal. Nucl. Chem. (IF 1.137) Pub Date : 2021-01-04 Yongsheng Ling, Hongxiao Wang, Xionghui Fei, Qi Yue, Tian Huang, Qing Shan, Daqian Hei, Ting Chen, Xiaojun Zhang, Wenbao Jia
Food waste has a high utilization value, but its high moisture content brings more disadvantages to its storage, transportation and energy utilizations. Dehydration of food waste is conducive to subsequent treatment, and herein, the effects of ionizing radiation pretreatment on the dehydration performance of tofu protein waste were examined. The mechanical centrifugation dehydration, moisture distribution
-
2D peak fitting for the analysis of radioxenon beta gamma spectra J. Radioanal. Nucl. Chem. (IF 1.137) Pub Date : 2021-01-04 Jefferson Sesler, James Scoville, Thienbao Carpency, Jordan Armstrong, Robert Hall
Atmospheric traces of radioactive xenon, in particular \(^{131m}{\text {Xe}}\), \(^{133}{\text {Xe}}\), \(^{133m}{\text {Xe}}\) and \(^{135}{\text {Xe}}\), can provide “smoking gun” evidence to classify underground nuclear fission reactions. Current software used to quantify isomer concentrations relies on a Region of Interest (ROI) method to sort beta-gamma coincidence counts. This experiences errors
-
Extraction behavior of several lanthanides from nitric acid with DMDODGA in [C 4 mim][NTf 2 ] ionic liquid J. Radioanal. Nucl. Chem. (IF 1.137) Pub Date : 2021-01-04 Qi Chen, Chuan Lu, Yifu Hu, Yaoyang Liu, Yu Zhou, Caishan Jiao, Meng Zhang, Hongguo Hou, Yang Gao, Guoxin Tian
The extraction behavior of several lanthanide ions (La(III), Nd(III), Sm(III), Gd(III), Yb(III)) from the nitric acid medium using ionic liquid [C4mim][NTf2] solvent containing N,N’-dimethyl-N,N’-dioctyl-3-oxadiglycolamide (DMDODGA) was studied. The effects of the concentration of HNO3, H+ and NO3− in aqueous phase, as well as the DMDODGA concentration and temperature on the distribution ratio of Ln(III)
-
Synthesis and evaluation of [ 99m Tc]TcAMD3465 as a SPECT tracer for CXCR4 receptor imaging J. Radioanal. Nucl. Chem. (IF 1.137) Pub Date : 2021-01-04 Yitian Wu, Hong Zhu, Xiaojun Zhang, Peng Yu, Yuan Gui, Zhihong Xu, Jinming Zhang, Jiahe Tian
CXCR4 plays an important role in a number of immunological-based diseases and cancers. The development of radiotracers targeting CXCR4 can provide a valuable tool for the diagnosis and monitoring of conditions involving deregulation of the receptor. The incorporation of multiple radionuclides into small molecules, peptides, and CXCR4 ligands have been reported and characterized. In this study, a 99mTc
-
Investigation of nanoformulation and incorporation potential of radiolabeled curcumin using HeLa and MDAH-2774 cells J. Radioanal. Nucl. Chem. (IF 1.137) Pub Date : 2021-01-04 Sevki Goksun Gokulu, Ayfer Yurt Kilcar, Ahmet Bilgi, Kadriye Busra Karatay, Nuri Yildirim, Cansu Kayas, Fazilet Zumrut Biber Muftuler, Mustafa Cosan Terek
Nowadays plant origin compounds with anti-cancer properties come into prominence, among them is curcumin (CUR) with a remarkable anti-cancer activity against various cancers. CUR was nanoformulated (CUR-PLGA) by the polymer based poly(lactic-co-glycolic acid) (PLGA) and both CUR and CUR-PLGA were radiolabeled with iodine-131 radionuclide for investigation of their in vitro behaviour on Human cervix
-
Chemical processes for recovery and purification of high-purity uranium-234 from aged plutonium-238 J. Radioanal. Nucl. Chem. (IF 1.137) Pub Date : 2021-01-04 Miting Du, Tom D. Hylton, Sharon M. Robinson
This work describes a streamlined approach to the recovery and purification of 234U from aged 238Pu. Key modifications to conventional techniques are described that result in an efficient uranium and plutonium separation process that successfully produced tens of grams of ultrahigh purity 234U at Oak Ridge National Laboratory. A new processing scheme was developed using an anion exchange column run
-
Activity concentrations of 226 Ra, 232 Th, 40 K, and 222 Rn in the indoor air and surface soil in Ho Chi Minh City, Vietnam: Methods for estimating indoor 222 Rn and health risks to the population J. Radioanal. Nucl. Chem. (IF 1.137) Pub Date : 2021-01-04 Vu Ngoc Ba, Van Thang Nguyen, Bui Ngoc Thien, Huynh Nguyen Phong Thu, Truong Thi Hong Loan
The aim of this study is to determine activity concentrations of natural radionuclides (226Ra, 232Th, 40K and 222Rn) and radiological risks due to the contamination of radionuclides in surface soil in Ho Chi Minh City, Vietnam. Based on the activity concentration of 226Ra in the surface soil, we proposed a method for estimation of the radon concentration in the indoor air. The assessments of radiation
-
Removal of cesium ions from A-type zeolites using sodium tetrakis(4-fluorophenyl)borate and sodium tetraphenylborate J. Radioanal. Nucl. Chem. (IF 1.137) Pub Date : 2021-01-04 Yuko Saito, Shota Shimizu, Shogo Kumagai, Tomohito Kameda, Toshiaki Yoshioka
-
243 Am certified reference material for mass spectrometry J. Radioanal. Nucl. Chem. (IF 1.137) Pub Date : 2021-01-04 Rožle Jakopič, Adelheid Fankhauser, Yetunde Aregbe, Stephan Richter, Marielle Crozet, Christophe Maillard, Cédric Rivier, Danièle Roudil, Maria Marouli, Faidra Tzika, Timotheos Altzitzoglou, Stefaan Pommé
The Joint Research Centre, in cooperation with the Commissariat à l’Energie Atomique et aux Energies Alternatives, produced a novel 243Am spike reference material for mass spectrometry. Americium solution with an isotopic composition of 88% 243Am and 12% 241Am was used as the source for the preparation of the spike material. The certified value of 5.696 (11) nmol g−1 for the amount content of 243Am
-
Uranium removal from aqueous medium using Co 0.5 Mn 0.5 Fe 2 O 4 nanoparticles J. Radioanal. Nucl. Chem. (IF 1.137) Pub Date : 2021-01-04 Mahmoud O. Abd El-Magied, El-Sayed A. Manaa, Mohamed A. M. Youssef, Mohamed N. Kouraim, Abdelghaffar S. Dhmees, Ekramy M. Eldesouky
Co0.5Mn0.5Fe2O4 nanoparticles were successfully synthesized for uranium removal from aquatic media. The Co0.5Mn0.5Fe2O4 was analyzed by XRD, EDX, FTIR, and DLS. The DLS analysis of Co0.5Mn0.5Fe2O4 showed the size of nanoparticles in the range of 3–20 nm. The removal of U(VI) ions by Co0.5Mn0.5Fe2O4 was studied at different experimental conditions. The initial uranium concentrations, pH, and time parameters
-
Multicycle adsorption and desorption for recovery of U(VI) from aqueous solution using oxime modified zeolite-A J. Radioanal. Nucl. Chem. (IF 1.137) Pub Date : 2021-01-04 Rashmi Dahake, Pratibha Tiwari, Amit Bansiwal
-
Clinical efficacy of Sep-Pak ® assisted one pot automated synthesis of pharmaceutical grade [ 18 F]FLT using 5′-O-(benzoyl)-2,3′-anhydrothymidine precursor J. Radioanal. Nucl. Chem. (IF 1.137) Pub Date : 2021-01-04 Arpit Mitra, Avik Chakraborty, Trupti Upadhye, Priyanka Verma, C. Rajesh, Sangita Lad, Yogita Pawar, Sandip Basu, Sharmila Banerjee
An automated production of pharmaceutical grade 3′-deoxy-3′-[18F]fluorothymidine ([18F]FLT) with solid phase extraction (SPE) purification using 5′-O-(Benzoyl)-2,3′anhydrothymidine precursor (Benzoyl-Anhydro) poses a major challenge. Herein, an automated, one-pot, two-step, radiochemical synthesis of [18F]FLT using benzoyl-anhydro precursor and subsequent optimization of SPE purification (using readily
-
Preparation of mesoporous MnO 2 /SBA-15 and its cesium ion adsorption properties J. Radioanal. Nucl. Chem. (IF 1.137) Pub Date : 2021-01-04 Qiang Xian, Xinmiao He, Enchao Wang, Zimei Bai, Dandan Zhao, Hui Dan, Yi Ding, Wenkun Zhu
Mesoporous MnO2/SBA-15 was prepared by a facile route using KMnO4 and MnCl2 as Mn source and used for removal of Cs+. The effects of MnO2 content, initial Cs+ concentration, contact time and pH on the Cs+ adsorption behavior were investigated. It was found that Cs+ adsorption capacity of SBA-15 can be significantly improved by MnO2 loading. The adsorption capacity increased with increasing MnO2 content
-
NaI cubic detector full-energy peak efficiency, including coincidence and self-absorption corrections for rectangular sources using analytical method J. Radioanal. Nucl. Chem. (IF 1.137) Pub Date : 2021-01-04 Mahmoud I. Abbas, Mohamed Elsafi, Mona M. Gouda, Mohamed Abd-Elzaher, A. Hamzawy, Mohamed S. Badawi, Abouzeid A. Thabet, Salam Noureddine, Ahmed M. El-Khatib
Low activities of radionuclides in environmental and occupational samples demand for the lower detection limits of the measuring system, which can be achieved by minimizing the source-to-detector distance. Analytical technique to calculate full-energy peak efficiency and total efficiency, self-absorption of sources and a coincidence factor of the NaI cubic scintillation detector with rectangular cavity
-
Prediction of thermodynamic data for radium suitable for thermodynamic database for radioactive waste management using an electrostatic model and correlation with ionic radii among alkaline earth metals J. Radioanal. Nucl. Chem. (IF 1.137) Pub Date : 2021-01-04 Akira Kitamura, Yasushi Yoshida
Thermodynamic data for radium for radioactive waste management have been predicted using an electrostatic model and correlation with the ionic radii of the alkaline earth metals. Estimation of the standard Gibbs free energy of formation and standard molar entropy of aqueous radium species and compounds has been based on such approaches as extrapolation of the thermodynamic properties of strontium and
-
Study of the accelerator production of 169 Yb radioisotope via various particles nuclear reactions J. Radioanal. Nucl. Chem. (IF 1.137) Pub Date : 2021-01-04 Mansoureh Tatari, Pejman Goudarzi, Haladhara Naik
The production of brachytherapy radio-nuclide 169Yb was investigated in the 169Tm(p,n), 170Yb(p,2n), 171Yb(p,3n), 172Yb(p,4n), 169Tm(d,2n), 168Er(α,3n), 167Er(α,2n) and 166Er(α,n) reactions. The cross section of these reactions were calculated using TALYS 1.9 code and compared with the available experimental results. SRIM-2013 code and GEANT4 toolkit were used to calculate the stopping power, range
-
Removal of uranium from groundwater using zero-valent-iron coated quartz sands J. Radioanal. Nucl. Chem. (IF 1.137) Pub Date : 2021-01-03 Weimin Zhang, Yihui Dong, Huidong Wang, Yadan Guo, Hua Zeng, Jinjing Zan
Zero-valent-iron coated quartz sand (ZVI-S) was used to remove uranium from groundwater in this study. Batch experiments and column experiments were conducted to study the influences of ZVI-S dosage, solution pH, contact time, and initial U(VI) concentration on U(VI) removal from solution and to simulate U(VI) removal efficiency using ZVI-S with different particle sizes, hydraulic loads, and U(VI)
-
Sources of monazite patches and dynamics of radionuclides concentration in the high background radiation areas of Kollam District, Kerala J. Radioanal. Nucl. Chem. (IF 1.137) Pub Date : 2021-01-03 V. Vineethkumar, R. Akhil, K. P. Shimod, V. Prakash
The present study attempts to provide a proper explanation to define the monazite source region and reason for its enrichment in coastal belts of Kollam district, Kerala. As part of that, primary data on enrichment of naturally occurring radionuclides viz. 40K, 226Ra, and 232Th in sand samples were collected from the study area and has been measured using NaI(Tl) detector. The radiological parameters
-
Analysis of BET specific surface area in several recycled oxide powders J. Radioanal. Nucl. Chem. (IF 1.137) Pub Date : 2021-01-03 G. Singh, S. C. Aher, P. V. S. Varma, D. B. Sathe, R. B. Bhatt
The surface area data of feed oxide powders is of fundamental interest to optimize the process of nuclear fuel fabrication. The single-point Brunauer–Emmet–Teller (BET) specific surface area of several recycled powders (synthesized from rejected scrap fuel pellets) was determined and compared with as-received and standard specified powders. Recycled UO2, ThO2, (U,Pu)O2 powders from bulk microwave
-
Comparison study of ruthenium sorption on Fe 3 O 4 and Fe 3 O 4 @MnO 2 in hydrochloric and nitric acids J. Radioanal. Nucl. Chem. (IF 1.137) Pub Date : 2021-01-03 Iga Zuba, Alicja Drwal, Krzysztof Drwal, Andrzej Pawlukojć
Adsorption of ruthenium (III) from acidic aqueous solution by Fe3O4 and Fe3O4@MnO2 composites was studied by a batch equilibrium method at room temperature. Mass distribution coefficients of Ru(III) were determined in the system of Fe3O4 and Fe3O4@MnO2 in solutions of HCl and HNO3 (concentration range from 0.01 to 0.5 mol L−1). The selectivity of ruthenium sorption in the developed systems was checked
-
Sediment accumulation rates in Karachi coastal area Pakistan using 210 Pb dating method J. Radioanal. Nucl. Chem. (IF 1.137) Pub Date : 2021-01-03 Muhammad Zaman Chaudhary, Khalid Khan, Nasir Ahmad, Azhar Mashiatullah, Tariq Javed, Nadeem Yaqoob, Um-e-Robab, Muhammad Sarwar Khan, Jawaria Abid
Sediment accumulation rates and age of sediments were determined using 210Pb dating method by applying constant rate of supply model of six bottom sediment cores, collected from various locations (Rehri Creek, Ghizri Creek, Korangi Creek, Manora Picnic Point, Sandspit and Sunairi Point) of Karachi coastal area of Pakistan. The results showed that an increase in accumulation rate was observed in the
-
Urine gross alpha/beta bioassay method development using liquid scintillation counting techniques J. Radioanal. Nucl. Chem. (IF 1.137) Pub Date : 2021-01-03 Olga Piraner, Robert L. Jones
In the case of a radiological or nuclear incident, valuable information could be obtained in a timely manner by using liquid scintillation counting (LSC) technique through fast screening of urine samples from potentially contaminated persons. This work describes the optimization of LSC parameters on PerkinElmer (PE) Tri-Carb and Quantulus GCT series instruments to develop a rapid method for screening
-
Machine learning for the analysis of 2D radioxenon beta gamma spectra J. Radioanal. Nucl. Chem. (IF 1.137) Pub Date : 2021-01-03 Jordan Armstrong, Thienbao Carpency, James Scoville, Jefferson Sesler, Robert Hall
Clandestine nuclear testing can be detected at a standoff distance using radioxenon beta-gamma analysis. International treaty monitoring organizations depend, in part, upon the activity ratios of various radioxenon types to determine if collected samples are the result of a weapons test or a peaceful purpose such as energy or medical isotope production. However, the currently deployed radioxenon analysis
-
Potential defect structure effects in the volatility separation of sub-picogram quantities of fission and activation products from an irradiated UO 2 matrix J. Radioanal. Nucl. Chem. (IF 1.137) Pub Date : 2021-01-03 Bruce K. McNamara, Samuel Morrison, Bruce Pierson
The use of fluorination as a rapid separation technique for quantification of trace-mass, short-lived isotopes is illustrated. Single crystal 238UO2 was exposed to a 14 MeV neutron source to produce mixed fission and activation products. Selective removal of trace volatile fluorides from non-volatile ones produced two results of interest. A decrease in background produced better detection and quantification
-
Natural radium isotopes in waters determined with gamma-ray spectrometry using a HPGe detector J. Radioanal. Nucl. Chem. (IF 1.137) Pub Date : 2021-01-03 Marta L. V. Patricio, Daniel M. Bonotto
This paper describes a methodology developed to measure the activity concentration of the four natural radium isotopes 226Ra, 228Ra, 224Ra and 223Ra in water samples, using γ-ray analysis performed with a hyperpure germanium detector (HPGe). The detector efficiency was properly determined using a set of thorium standards exhibiting concentrations between 10 and 10,000 μg/g. The developed analytical
-
Development of radioimmunoassay for estimation of C-peptide in human serum J. Radioanal. Nucl. Chem. (IF 1.137) Pub Date : 2021-01-03 Rajan Radha Rasmi, V. B. Kadwad, Jayula Sarnaik, K. Bhasker Shenoy, H. M. Somashekarappa
C-Peptide radioimmunoassay (RIA) is an invaluable aid in diagnosis of diabetes, insulinoma and hypoglycaemia. An RIA for C-peptide was developed by using a polyclonal antibody for human C-peptide raised in rabbits and validated using human serum samples. Tyrosyated C-peptide was radioiodinated to a specific activity of around 283 µCi/µg by conventional chloramine-T method. The detection limit of the
-
Performance of k0 standardization method in neutron activation analysis using Kayzero for Windows software at the National Center for Energy, Sciences and Nuclear Techniques (CNESTEN-Morocco) J. Radioanal. Nucl. Chem. (IF 1.137) Pub Date : 2021-01-03 Hassan Chahidi, Hamid Bounouira, Hamid Amsil, Abdelmajid Choukri, Khalid Embarch, Abdessamad Didi, Aarab Ilyas, Khalid Laraki, Hamid Marah
In this work, we aim to study the performance of the k0-standardization method in neutron activation analysis when using the Kayzero for Windows software at the National Center for Energy, Sciences, and Nuclear Techniques (CNESTEN) of Morocco. Accuracy and precision were ensured by using certified reference materials from the IAEA, NIST, and WEPAL. Samples were irradiated using the pneumatic transfer
-
Influence of freeze-thaw cycles and high temperature exposure on immobilization performance of geopolymer-zeolite A composites for strontium radionuclide J. Radioanal. Nucl. Chem. (IF 1.137) Pub Date : 2021-01-03 Yu Li, Xi Peng, Xin Jiang, Ran An, Lei Li, Jiayi Li, Han Li, Zhonghui Xu
This work aims to explore the influence of freeze-thaw cycles and high temperature exposure on immobilization performance of geopolymer-zeolite A composites (GZAC) for strontium radionuclide. After 45 freeze-thaw cycles, no visible change in the phase composition, microscopic morphology and cumulative leaching fractions (CLF) of the Sr2+ ions could be observed. Although the zeolite phases in GZAC were
-
New loading method for high precision Sm isotope analysis of nuclear materials using thermal ionization mass spectrometry J. Radioanal. Nucl. Chem. (IF 1.137) Pub Date : 2021-01-03 James Louis-Jean, Jeremy D. Inglis, Susan Hanson, Anthony Pollington, Daniel Meininger, Sean Reilly, Robert Steiner
This work demonstrates an analytical protocol for high precision Sm isotope analysis by thermal ionization mass spectrometry (TIMS) using a Pt activator. The method permits precise measurements of small aliquots (1–20 ng) of Sm on single Re filament using a modified static-total evaporation technique. This study represents the first attempt to use such protocols for Sm isotope analyses while reducing
-
Trichotomic separation of light and heavy lanthanides and Am by batchwise multi-stage extractions using TODGA J. Radioanal. Nucl. Chem. (IF 1.137) Pub Date : 2020-12-29 Masahiko Matsumiya, Yusuke Tsuchida, Yuji Sasaki, Ryoma Ono, Masahiko Nakase, Kenji Takeshita
To achieve trichotomic separation of light lanthanides (Ln), heavy Ln, and Am, batchwise multi-stage extractions using N,N,N′,N′-tetraoctyl-diglycolamide (TODGA) extractant from organic acids are studied. This technique has the advantages of both solvent extraction and chromatography, which enable successive separation and management of large volumes of aqueous solutions. Malonic acid (M-Acid) is used
-
A novel magnetic functionalized m-carboxyphenyl azo calix[4]arene symmetric sulfide derivative: synthesis and application as a selective adsorbent for removal of U (VI) J. Radioanal. Nucl. Chem. (IF 1.137) Pub Date : 2020-12-29 Jiaqi Luo, Yuli Xu, Qiqi Zhu, Kang Zhang, Fang Chen, Xiuwu Yu, Zhao Huang, Fangzhu Xiao, Guowen Peng
A novel adsorbent magnetic functionalized m-carboxyphenyl azo calix[4]arene symmetrical sulfide derivative (Fe3O4/M-CCSSD) was fabricated by a series of simple reactions and characterized by FT-IR and SEM. The effects on U (VI) adsorption process were investigated at several conditions. The calculated data disclose that the adsorption process of U (VI) by Fe3O4/M-CCSSD is an endothermic spontaneous
-
Determination of aluminum in bovine liver SRM 1577c by Instrumental Cold Neutron Activation Analysis J. Radioanal. Nucl. Chem. (IF 1.137) Pub Date : 2020-10-29 Rolf Zeisler, Danyal Turkoglu, Nick Sharp, Heather Chen-Mayer
Instrumental neutron activation analysis may need to correct for matrix interferences caused by fast neutron induced threshold reactions. The very low Al mass fraction in bovine liver Standard Reference Material (SRM) has eluded certification due to such complications. Cold neutron beam irradiation absent fast neutrons provides a possible alternative, which has been applied for the first time to determine
-
Use of silver–bentonite in sorption of chloride and iodide ions J. Radioanal. Nucl. Chem. (IF 1.137) Pub Date : 2020-10-30 Dóra Buzetzky, Noémi M. Nagy, József Kónya
Ag–bentonite was prepared by ion exchange process to sorb iodide and chloride ions in batch experiments. The modified bentonite was examined with XRF and XRD. 75% of the cation exchange capacity was exchanged by silver ions. It was found that the sorption of chloride ions is an exothermic precipitation process because the solubility decreases with increasing temperature. In the case of iodide sorption
-
Preparation, characterization and comparative ionizing electromagnetic radiation performances: PART II-ceramic reinforced polymeric composites J. Radioanal. Nucl. Chem. (IF 1.137) Pub Date : 2020-10-29 E. Eren Belgin, G. A. Aycik
In this study, isophytalitic unsaturated polyester based composites were prepared by reinforcing with boron carbide, silicon carbide and tungsten carbide. IEMR attenuation properties of the composites were investigated by gamma spectroscopy for different IEMR energies after density evaluation and structural characterization of the composites. Mass attenuation coefficients of composites were higher
-
Removal of uranyl ions from aqueous media by tannic acid-chitosan hydrothermal carbon: equilibria, kinetics and thermodynamics J. Radioanal. Nucl. Chem. (IF 1.137) Pub Date : 2020-10-31 Zili Wang, Zhirong Liu, Tianzhen Ye, Yun Wang, Limin Zhou
The tannic acid-chitosan hydrothermal carbon (TCHC) by hydrothermal carbonization is first used in uranium(VI) adsorption. The characterization of HCTC was investigated by scanning electron microscopy, X-ray diffraction, infrared spectroscopy (FTIR). The effects of pH, adsorbent dosage, initial U(VI) concentration, temperature and contact time on the adsorption of uranium(VI) were expressed in batch
-
Determination of uranium content in ammonium uranyl carbonate (AUC) and triuranium octoxide (U 3 O 8 ) J. Radioanal. Nucl. Chem. (IF 1.137) Pub Date : 2020-10-30 Lyuben Dobrev, Tzvetana Nonova
This paper presents a fast and reproducible method for determination of uranium content in ammonium uranyl carbonate (AUC) and U3O8 obtained from it. The effects of high activity and specific chemical composition of the samples were minimized by adapting the radiochemical procedures for analysis of a small amount of samples. Measurements were made by alpha-spectrometry and ICP-MS. The results show
-
Validation of a reversed-phase high-performance liquid chromatography (RP-HPLC) method for analysis of [ 11 C]Nicotine J. Radioanal. Nucl. Chem. (IF 1.137) Pub Date : 2020-10-31 Arijit Ghosh, Karen Woolum, Michael V. Knopp, Krishan Kumar
Validated analytical methods must be used for accurate and precise determination of identity, purity, strength, and quality of any pharmaceutical dose intended for human administration. Consequently, all analytical methods must be validated per USP <1225> and the ICH Q2R1 guidelines to meet the cGMP requirements of the FDA and EMA. A reversed-phase high-performance liquid chromatography analytical
-
Improvement in the particle collection method to mitigate the mixing effect during uranium isotope analysis of environmental samples using secondary ion mass spectrometry J. Radioanal. Nucl. Chem. (IF 1.137) Pub Date : 2020-10-29 Tae Hee Kim, Jinkyu Park, Na-Ri Lee, Chi-Gyu Lee
We introduce an improved particle collection method for uranium isotopic analysis using secondary ion mass spectrometry (SIMS). A new design was applied to a vacuum-suction impactor to promote the dispersibility of collected particles and the air flow rate was adjusted to maximize the particle recovery yield. The improved method remarkably mitigated the ‘mixing effect’. Materials from a nuclear forensic
-
Preparation and assessment of magnetic graphene oxide/chitosan composite for removing radiocobalt from aqueous solution J. Radioanal. Nucl. Chem. (IF 1.137) Pub Date : 2020-10-29 Yinggen Ouyang, Jia Deng, Zhongcun Chen, Lin Yang, Songtao Xiao, Lingyu Wang, Yaolin Zhao
A novel adsorbent of magnetic graphene oxide/chitosan (MGOC) composite has been prepared via chemical cross-linking method, and exhibits an extraordinary sorption capacity (about 59.82 mg/g) towards cobalt ions. The batch experiments revealed that MGOC is weakly affected by ionic strength and pH-dependent for cobalt ions sorption. The sorption process is spontaneous and endothermic according to thermodynamic