A5102830258- Radioactive contamination and transfer
- Radioactive element chemistry and processing
- Nuclear Physics and Applications
- Radioactivity and Radon Measurements
- Radiation Detection and Scintillator Technologies
- Mass Spectrometry Techniques and Applications
- Environmental Toxicology and Ecotoxicology
- Atmospheric and Environmental Gas Dynamics
- Mercury impact and mitigation studies
- Chemical and Physical Properties in Aqueous Solutions
- Analytical chemistry methods development
- Isotope Analysis in Ecology
- Geochemistry and Elemental Analysis
- Orthopedic Infections and Treatments
- Iron oxide chemistry and applications
- Atomic and Subatomic Physics Research
- Nuclear and radioactivity studies
- Gastrointestinal Bleeding Diagnosis and Treatment
- Marine and environmental studies
- Nuclear materials and radiation effects
- Orthopaedic implants and arthroplasty
- Medical Imaging and Pathology Studies
- Spectroscopy and Quantum Chemical Studies
- Inorganic Fluorides and Related Compounds
- Covalent Organic Framework Applications
CEA DAM Île-de-France
2013-2025
Commissariat à l'Énergie Atomique et aux Énergies Alternatives
2013-2025
Ministère des Armées
2019-2023
Denver Art Museum
2018
CEA Paris-Saclay
1995-2006
Direction des énergies
1995-2005
Centre Hospitalier Universitaire de Grenoble
1997
Hôpital Albert Michallon
1994-1996
AT&T (United States)
1992
Campus France
1992
Abstract Monitoring atmospheric concentrations of radioxenons is relevant to provide evidence or underground nuclear weapon tests. However, when the design International Network (IMS) Comprehensive Nuclear‐Test‐Ban Treaty (CTBT) was set up, impact industrial releases not perceived. It now well known that radioxenon signature can interfere with Therefore, there a crucial need characterize distributions from sources—the so‐called background—in frame CTBT. Two years Xe‐133 background have been...
Since the end of nuclear weapon testing, anthropogenic metallic radionuclides have originated from accidents such as Chernobyl and Fukushima controlled releases industry. 60Co is an activation product found in effluents power plants, mobile reactors, fuel reprocessing facilities. In this paper, we are addressing question (radio)cobalt speciation upon bioaccumulation sentinel organism Mytilus galloprovincialis after vivo contamination a pseudo-natural system. For study, inductively coupled...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSpin transition evidenced by soft x-ray absorption spectroscopyChristophe Cartier dit Moulin, Petra Rudolf, Anne Marie Flank, and Chien Te ChenCite this: J. Phys. Chem. 1992, 96, 15, 6196–6198Publication Date (Print):July 1, 1992Publication History Published online1 May 2002Published inissue 1 July 1992https://pubs.acs.org/doi/10.1021/j100194a021https://doi.org/10.1021/j100194a021research-articleACS PublicationsRequest reuse permissionsArticle...
Seawater contains radionuclides at environmental levels; some are naturally present and others come from anthropogenic nuclear activity. In this report, the molecular speciation in seawater of uranium(VI) neptunium(V) a concentration 5 × 10−5 M has been investigated for first time using combination two spectroscopic techniques: Time-resolved laser-induced fluorescence (TRLIF) U extended X-ray absorption fine structure (EXAFS) Np LIII edge. parallel, theoretical uranium neptunium same is also...
Abstract Rare gas capture and purification is a major challenge for energy, environment, health applications. Of utmost importance the nuclear industry, novel separation processes Xe are urgently needed spent fuel reprocessing activity monitoring. The recovered, non‐radioactive also of high economic value lighting, surgical anesthetic, etc. Here, using adsorption breakthrough experiments statistical mechanics molecular simulation, we show outstanding performance zeolite‐supported silver...
The fate of radionuclides in the environment and especially seawater is a cause great concern for modern society drives need experimental speciation studies.
In this article, the speciation and behavior of anthropogenic metallic uranium deposited on natural soil are approached by combining EXAFS (extended X-ray absorption fine structure) TRLFS (time-resolved laser-induced fluorescence spectroscopy). First, (uranyl) was determined along vertical profile bedrock linear combination fitting spectra. It shows that migration is strongly limited sorption reaction onto rock constituents, mainly mineral carbonates organic matter. Second, isotherms were...
Within the framework of environmental studies regarding radioactive waste management, speciation M3+ f-elements in concentrated carbonate solutions was investigated. Solubility measurements NaEu(CO3)2·5H2O(s) were performed at 23 ± 1 °C under fixed [Na+], by using NaClO4. In 3 mol l−1 Na+ aqueous solutions, limiting complex Eu(CO3)33− identified range 0.01 < [CO32−] 2 l−1; experimental solubilities modelled with equilibrium: + CO32− ⇌ 5H2O, and logarithm corresponding equilibrium constant...
Abstract Global simulations of the atmospheric dispersion worldwide industrial Xe‐133 releases have revealed a large spatial and day‐to‐day variability resulting so‐called background. Most stations International Monitoring System (IMS) Comprehensive nuclear‐Test‐Ban Treaty Organization actually detect regularly. Measured levels are explained by varying combination local distant sources can interfere with discrimination nuclear test signatures. Therefore, better understanding background is...
In the ocean, complex interactions between natural and anthropogenic radionuclides, seawater, diverse marine biota provide a unique window through which to examine ecosystem trophic transfer mechanisms in cases of accidental dissemination. The nature interaction environment, species is therefore essential for better understanding from hydrosphere biosphere. Although data pertaining rate global are often available, little known regarding mechanism environmental transport uptake heavy...
Uranium speciation and bioaccumulation were investigated in the sea urchin Paracentrotus lividus. Through accumulation experiments a well-controlled aquarium followed by ICP-OES analysis, quantification of uranium different compartments was performed. is mainly distributed test (skeletal components), as it major constituent urchin, but terms quantity per gram compartment, following rating: intestinal tract > gonads ≫ test, obtained. Combining both extended X-ray Absorption Spectroscopy...
Ca(2+) complexation by both sulfate and selenate ligands was studied CE. The species were observed to give a unique retention peak as result of fast equilibrium between the free ions complexes. change in corresponding time interpreted with respect constant reaction. results confirmed formation CaSO(4)(aq) CaSeO(4)(aq) under our experimental conditions. data derived from series measurements carried out at about 15, 25, 35, 45 55 degrees C 0.1 mol/L NaNO(3) ionic strength solutions, 0.5 1.0...
This paper describes the ability of combination electrospray ionization mass spectrometry (ESI-MS) and anion-exchange chromatography coupled with inductively plasma atomic emission (AEC-ICP-AES) for cobalt speciation study in binary cobalt–cysteine system. ESI-MS, allowing identification characterization analytes, is used as a technique complementary to AEC-ICP-AES, providing elemental information on separated species. The methods have been developed through samples containing Co 2+ 1-fold...
A new RIS-TOF instrument, called FAKIR (Facility for Analyzing Krypton Isotope Ratios), has been developed at CENBG in order to measure Kr isotope ratios with an extremely high sensitivity.