Article
Chemistry, Multidisciplinary
Jean-Francois Vigier, Daniel Freis, Olaf Walter, Oliver Dieste Blanco, Daniel Bouexiere, Evelyn Zuleger, Natalia Palina, Tonya Vitova, Rudy J. M. Konings, Karin Popa
Summary: This study demonstrates the successful production of homogeneous nanocrystalline particles of mixed actinide oxide solid solutions containing americium. The nanocrystals were characterized and studied for their structure and behavior under self-irradiation. The results showed that the as-synthesized nanoparticles had smaller crystallographic swelling compared to the sintered products.
Article
Chemistry, Analytical
Zhao Huang, Xiaolin Hou, Xue Zhao
Summary: This study reports a rapid analytical method to simultaneously determine Pu-238, Pu-239, Pu-240, and Pu-241 using triple-quadrupole inductively coupled plasma mass spectrometry (ICP-MS/MS) combined with chemical separation. The method achieved high decontamination factors for uranium interference and effectively eliminated isobaric interferences. The overall elimination efficiency and removal efficiency of uranium interference were significantly improved compared to reported methods. The detection time was reduced to minutes, satisfying the requirement for rapid analysis.
ANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Analytical
Shuai Zhang, Zhiyong Liu, Guosheng Yang, Jian Zheng, Shaoming Pan, Tatsuo Aono, Aya Sakaguchi
Summary: A new method has been developed to solve the difficulties in analyzing Np-237 in seawater, and accurate measurements have been obtained. This method has low method detection limits and high sample throughput, which is of great significance for evaluating the impact of radioactive wastewater discharge on the marine ecological system.
ANALYTICAL CHEMISTRY
(2023)
Article
Soil Science
Katrin Meusburger, Paolo Porto, Judith Kobler Waldis, Christine Alewell
Summary: This study validates the use of Pu239+240 as a soil redistribution tracer and estimates an average soil loss of 22.2t/ha/yr. It recommends taking incremental soil samples and extracting larger soil volumes to reduce measurement uncertainties.
Article
Multidisciplinary Sciences
Chris Tighe, Maxi Castrillejo, Marcus Christl, Claude Degueldre, Jeremy Andrew, Kirk T. Semple, Malcolm J. Joyce
Summary: Trace-level plutonium in the environment is often a combination of local and global contributions, typically originating from human activities. Isotopic ratio anomalies in plutonium can provide forensic insights into specific activities, aiding in the development of clean-up strategies.
NATURE COMMUNICATIONS
(2021)
Article
Nuclear Science & Technology
Sandro Pelloni, Dimitri Rochman
Summary: In this study, a stochastic technique based on the Serpent code is used to adjust the nuclear data for U-235 and Pu-239. The adjustment is done by using the JEFF-3.3 nuclear data library, which includes covariance data, and the Asymptotic Generalized Linear Least-Squares (AGLLS) assimilation methodology. The results show that the adjusted parameters include a decrease in the fission and elastic scattering cross-sections for U-235, an increase in (nu) over bar, and a decrease in the elastic scattering cross-section for Pu-239.
ANNALS OF NUCLEAR ENERGY
(2022)
Article
Chemistry, Analytical
Guogang Jia, Jing Jia
Summary: A new method was developed for the determination of Pu239+240 and Pu-238 in environmental soil samples using a Microthene-TOA column and alpha-spectrometry. The method was improved based on the comparison of leaching efficiency between fusion technique and direct HNO3 leaching and the removal effect of silicates from soil leaching solution with PEG. The method was validated using a certified reference material and showed good agreement with the recommended values. The detection limits for Pu239+240 and Pu-238 were 2.1 mBq kg(-1) and 1.3 mBq kg(-1) respectively when analyzing 20 g soil.
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
(2023)
Article
Chemistry, Analytical
Shalina C. Metzger, Benjamin T. Manard, Debra A. Bostick, Brian W. Ticknor, Kayron T. Rogers, Eddy H. McBay, David C. Glasgow, N. Alex Zirakparvar, Cole R. Hexel
Summary: Elemental and isotopic systematics of ultra-trace level actinides and main group elements in nuclear grade graphite are crucial for reactor operation and security. While analysis methods have been improved, little focus has been placed on optimizing chemical separations. This study explored methods to separate U, Pu, and Ti from graphite samples using various Eichrom cartridges, achieving precise isotope ratio measurements for titanium in all samples.
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2021)
Article
Chemistry, Inorganic & Nuclear
Nina Budantseva, Grigory Andreev, Marina Sokolova, Aleksander Fedoseev
Summary: Uranyl compounds and complexes of transuranium elements exhibit structural similarities, with chromate anions not showing unique structural roles compared to sulfate and selenate ions. Neptunium and plutonium chromates contain similar structural units to uranyl sulfates and selenates, and there is no clear correlation between outer-sphere cations and the topology of the structural units in actinyl complexes with tetrahedral oxoanions.
INORGANIC CHEMISTRY
(2021)
Article
Instruments & Instrumentation
M. Michel, A. Filby, S. Heinze, R. Margreiter, E. Strub
Summary: In this study, a radiochemistry laboratory in Cologne, Germany was chosen as a case study to investigate the release of nuclear facilities from regulatory control. Measurements of the samples showed elevated values of C-14 and Cl-36, but below the release values. It was confirmed that these elements were openly handled in the laboratory.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
(2022)
Article
Multidisciplinary Sciences
Yusuke Yokoyama, Stephen Tims, Michaela Froehlich, Shoko Hirabayashi, Takahiro Aze, L. Keith Fifield, Dominik Koll, Yosuke Miyairi, Stefan Pavetich, Michinobu Kuwae
Summary: This article introduces a new method that combines annual banded reef building corals and nearshore marine sediments to determine the start of the nuclear era. The efficacy of the method is demonstrated by measuring plutonium content and isotope ratios accurately, which allows reconstruction of the Pacific Pu signal.
SCIENTIFIC REPORTS
(2022)
Article
Chemistry, Analytical
Julia Savosina, Marina Agafonova-Moroz, Andrey Naumov, Artem Nikolaev, Alexander Lumpov, Vasily Babain, Andrey Legin, Alejandro Olivieri, Hadi Parastar, Dmitry Kirsanov
Summary: The chemical analysis of spent nuclear fuel reprocessing is a challenging research field. Traditional methods fail to provide immediate information. This study used potentiometric multisensor array and UV-Vis spectrometry for analysis, showing their suitability for industrial applications.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Instruments & Instrumentation
Ming He, Qingzhang Zhao, Yiwen Bao, Kangning Li, Wenhui Zhang, Pan Hu, Shengyong Su, Jie Gong, Qubo You
Summary: The China Institute of Atomic Energy has successfully developed a homemade 300 kV AMS system for heavy isotopes measurement, achieving good transmission efficiency and uncertainty in the measurement of I-129 and Pu-239.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
(2022)
Article
Astronomy & Astrophysics
Xilu Wang, Adam M. Clark, John Ellis, Adrienne F. Ertel, Brian D. Fields, Brian J. Fry, Zhenghai Liu, Jesse A. Miller, Rebecca Surman
Summary: The astrophysical sites where r-process elements are synthesized are still uncertain, but neutron star mergers and certain core-collapse supernovae are possible sources. Recent discoveries of Fe-60 and Pu-244 on Earth and the Moon suggest that astronomical explosions, possibly supernovae, have occurred near Earth within the last few million years. This has led to discussions on the origins of r-process elements and the potential history of the solar neighborhood, with the focus on distinguishing between supernova and kilonova scenarios for the synthesis of these elements.
ASTROPHYSICAL JOURNAL
(2021)
Proceedings Paper
Nuclear Science & Technology
Matthew Devlin, Keegan J. Kelly, Jaime A. Gomez, John M. O'Donnell, Denise Neudecker, Robert C. Haight, Eames Bennett, Nikolaos Fotiades, John Ullmann, Ching-Yen Wu, Jack Henderson, Roger Henderson, Matthew Q. Buckner
Summary: The Chi-Nu project has completed two measurements for prompt fission neutron energy spectra of Pu-239 and U-235, and is almost done with the measurement for U-238. Similar data have also been collected for spontaneous fission in other isotopes, and a measurement for fission neutron spectra from Pu-240(n,f) is currently underway.
15TH INTERNATIONAL CONFERENCE ON NUCLEAR DATA FOR SCIENCE AND TECHNOLOGY, ND2022
(2023)
Article
Instruments & Instrumentation
Bjoern-Alexander Dittmann, Raffaele Buompane, Elena Chamizo, Marcus Christl, Alfred Dewald, Tibor Dunai, Claus Feuerstein, Keith Fifield, Michaela Frohlich, Stefan Heinze, Fabio Marzaioli, Carsten Muenker, Antonio Petraglia, Carmina Sirignano, Erik Strub, Hans-Arno Synal, Filippo Terrasi, Stephen Tims, Anton Wallner
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
(2019)
Article
Instruments & Instrumentation
E. Chamizo, M. Lopez-Lora
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
(2019)
Article
Geochemistry & Geophysics
M. Villa-Alfageme, E. Chamizo, T. C. Kenna, M. Lopez-Lora, N. Casacuberta, C. Chang, P. Masque, M. Christl
Article
Instruments & Instrumentation
Mercedes Lopez-Lora, Elena Chamizo
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
(2019)
Article
Environmental Sciences
Mercedes Lopez-Lora, Elena Chamizo, Martina Rozmaric, Deon C. Louw
SCIENCE OF THE TOTAL ENVIRONMENT
(2020)
Article
Environmental Sciences
M. K. Pham, E. Chamizo, M. Lopez-Lora, J. Martin, I. Osvath, P. P. Povinec
JOURNAL OF ENVIRONMENTAL RADIOACTIVITY
(2020)
Article
Environmental Sciences
E. Chamizo, C. Raaf, M. Lopez-Lora, R. Garcia-Tenorio, E. Holm, N. Rabesiranana, G. Pedehontaa-Hiaa
SCIENCE OF THE TOTAL ENVIRONMENT
(2020)
Article
Environmental Sciences
M. Rozmaric, E. Chamizo, D. C. Louw, M. Lopez-Lora, O. Blinova, I. Levy, B. Mudumbi, A. K. van der Plas, R. Garcia Tenorio, P. McGinnity, I. Osvath
Summary: The study conducted a detailed analysis of the distribution and sources of six anthropogenic radionuclides in the Namibian marine ecosystem, showing that these nuclides mainly originate from global fallout. Different distribution patterns were observed in inshore and offshore samples, providing the first comprehensive assessment of anthropogenic radionuclide levels in the Southern Atlantic Ocean.
Article
Oceanography
E. Chamizo, M. Christl, M. Lopez-Lora, N. Casacuberta, A. -M. Wefing, T. C. Kenna
Summary: This study explores the potential of using the U-233/U-236 atom ratio to distinguish Atlantic and Pacific waters in the Arctic Ocean. Samples from the 2015 GN01 GEOTRACES expedition were analyzed, revealing that water masses can be differentiated based on their U-233/U-236 signatures. The study also found relatively high U-233/U-236 ratios in deep waters, potentially indicating an increase in naturally occurring U-233 and U-236.
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2022)
Article
Chemistry, Analytical
Qian Wu, Li Tian, Xiangyu Shan, Huiling Li, Chao Li, Juan Lu
Summary: A novel ECL sensor was developed by modifying Fe3CuO4-Ru(bpy)3+ and GO-CdS@ZnS on the electrode for the detection of permethrin. The sensor exhibited high sensitivity and a wide detection range.
Article
Chemistry, Analytical
Tingting Gong, Lei Liao, Bingying Jiang, Ruo Yuan, Yun Xiang
Summary: In this study, a fluorescent biosensing system for high sensitivity detection of MT was established using a new Ag+-stabilized DNA triplex probe (Ag+-SDTP) combined with catalytic hairpin assembly (CHA) and CRISPR/Cas12a signal enhancements. The sensing method is able to selectively detect MT from other non-specific molecules and can achieve low level detection of MT in diluted human serums, demonstrating its potential for monitoring disease-specific MT biomarker at trace levels.
Article
Chemistry, Analytical
Estrella Sanz Rodriguez, Kyra Wood, Paul R. Haddad, Brett Paull
Summary: This study presents a simple, rapid, and reliable method for determining boron in aqueous solutions using suppressed ion chromatography coupled to electrospray ionisation-triple quadrupole mass spectrometry. The method achieved a low limit of detection and demonstrated excellent analytical performance.
Article
Chemistry, Analytical
Aline Cournut, Paul Moustiez, Yannick Coffinier, Christine Enjalbal, Claudia Bich
Summary: Alzheimer's disease is a major cause of senile dementia and is characterized by the aggregation of neurofibrillary tangles and amyloid plaques in the brain. The A beta 1-42 peptide is considered the primary cause of neurotoxicity due to its insolubility and subsequent aggregation. A beta 1-42 and A beta 1-40 have been identified as relevant biomarkers for AD diagnosis, and SurfaceAssisted Laser Desorption/Ionization Mass Spectrometry (SALDI-MS) was used to monitor the A beta 1-42/A beta 1-40 ratio without prior sample treatment.
Article
Chemistry, Analytical
Dotse Selali Chormey, Buse Tugba Zaman, Tulay Borahan Kustanto, Sezin Erarpat Bodur, Suleyman Bodur, Elif Ozturk Er, Sezgin Bakirdere
Summary: This review provides an overview of the harmful effects of endocrine disrupting chemicals (EDCs) on human health and introduces the methods for analyzing EDCs. Recent research has focused on using green chemicals, such as deep eutectic solvents (DESs), for microextraction to ensure environmental safety.
Article
Chemistry, Analytical
Yan Zhang, Renfeng Xu, Jingjing Wu, Zhenghong Zhang, Yuhuang Wang, Hongqin Yang, Sheng Zhang
Summary: This study visualized the pore-like structures in prostate cancer cell membranes after treatment with the anticancer drug paclitaxel, demonstrating its mechanism of action related to oxidative damage.
Article
Chemistry, Analytical
Chihong Ma, Qin Zhou, Jinjin Shi, Hua Gao, Di Huang, Huimin Xue, Han Wang, Zhenzhong Zhang, Sen Yang, Junli Zhang, Kaixiang Zhang
Summary: We developed a CRISPR-empowered electrochemical biosensor, named PER-E-CRISPR, for amplification-free and sensitive detection of miR-21. The biosensor combines the advantages of CRISPR/Cas13a and primer exchange reaction (PER) for target amplification. Under optimized conditions, the PER-E-CRISPR assay exhibits a linear range from 10-13 to 10-7 M and a limit of detection of 30.2 fM. The biosensor shows excellent performance in actual plasma, indicating promising prospects for miRNA detection in molecular diagnosis.
Article
Chemistry, Analytical
Gang Liang, Jie Zhao, Yufei Gao, Tao Xie, Jianhui Zhen, Ligang Pan, Wenwen Gong
Summary: Molecular docking (MD) analysis is widely used for studying the interaction between aptamers and small molecules. This study established steady-state aptamers of tertiary structures (SATS) using specific aptamers of tetracycline antibiotics as docking models. Molecular docking results revealed multiple binding sites in the SATS of aptamers, with significant variations in binding free energy (BFE) and docking score (DS). The study also proposed a method for MD analysis based on SATS, providing insights into binding mode and predicting binding sites.
Article
Chemistry, Analytical
Yixuan Xu, Changchang Teng, Huiping Dang, Dalong Yin, Lifeng Yan
Summary: Stable organic radical molecules with high NIR fluorescence quantum efficiency have been synthesized and encapsulated into nanoparticles, which show great potential for both photodynamic therapy (PDT) and photothermal therapy (PTT) of tumors.
Article
Chemistry, Analytical
Yu Su, Dandan Yang, Yanjie Wang, Jie Ding, Lan Ding, Daqian Song
Summary: In this study, a highly selective molecularly imprinted polymer Cu-MIPs@CS was designed and synthesized for bisphenol A (BPA). Cu-MIPs@CS showed significantly enhanced imprinting factor and selective factor towards BPA compared to MIPs@CS. It also exhibited superior discrimination ability between BPA and its structural analogue. Additionally, Cu-MIPs@CS were successfully applied as a solid phase extraction adsorbent for the determination of BPA in drinking water samples.
Article
Chemistry, Analytical
Yi Qiao, Qiongdan Zhang, Yukun He, Tianguang Cheng, Jing Tu
Summary: Single cell heterogeneity plays an important role in many biological phenomena, and distinguishing cells with specific mutations is beneficial for clinical diagnosis and drug screening. This study introduces a gel plate platform that can distinguish cell types based on their phenotypes, with low equipment requirement. The gel platform has potential in point-of-care circumstances and single-cell stimulation responses that prioritize efficiency and simplicity.
Article
Chemistry, Analytical
Chengke Wang, Shuyang Sun, Ping Wang, Huawei Zhao, Wenling Li
Summary: The food safety of aquatic products is a global concern. Nanotechnology-based analyses have advantages in the detection of bacteria, metal ions, and small molecule contaminants. This review summarizes the recent advances in biosensing strategies for aquatic products and highlights the application of nanomaterials, lateral flow-based biosensors, surface-enhanced Raman scattering, microfluidic chips, and molecular imprinting technologies.
Article
Chemistry, Analytical
Liping Zhu, Zeng Tang, Xuemei Zhang, Li Zhu, Tian Meng, Linying Yu, Ting Xiao, Shasha Lu, Xiaoli Xiong, Xiurong Yang
Summary: A sensitive off-on electrochemiluminescence DNA sensor was developed using Exo III-assisted cascade amplification system. The sensor achieved high selectivity and ultra-high sensitivity in detecting target DNA by utilizing ECL and SPR effects. This study provides a new perspective for designing highly sensitive and programmable ECL biosensors.
Article
Chemistry, Analytical
Tong Li, Mengxu Sun, Suping Xia, Ting Huang, Rong-Tian Li, Chunrong Li, Zong Dai, Jin-Xiang Chen, Jun Chen, Nuan Jia
Summary: Here, we developed a binary system based on DNA tetrahedron and fluorogenic RNA aptamers for highly specific and label-free mRNA imaging in living cells. This system achieved high specificity label-free detection of nucleic acids with a detection limit of 1.34 nM. The method has potential applications in early disease diagnosis and new drug development.
Article
Chemistry, Analytical
Yao Zhao, Shu Zhang, Wang Yao, Yuxuan Zhu, Jing Qian, Juan Yang, Nianjun Yang
Summary: A new hierarchical nanostructured composite with high conductivity and catalytic activity is synthesized. The sensor exhibits significant catalytic effect and high sensitivity for monitoring the environmental endocrine disruptor bisphenol A (BPA).
