A5045774022- Heavy metals in environment
- Nanoparticles: synthesis and applications
- Arsenic contamination and mitigation
- Advanced Nanomaterials in Catalysis
- Chromium effects and bioremediation
- Environmental Toxicology and Ecotoxicology
- Electrochemical Analysis and Applications
- Analytical chemistry methods development
- X-ray Spectroscopy and Fluorescence Analysis
- Forest Ecology and Biodiversity Studies
- Soil Carbon and Nitrogen Dynamics
- Adsorption and biosorption for pollutant removal
- Radioactive element chemistry and processing
- Agriculture and Rural Development Research
- Geochemistry and Geologic Mapping
- Soil and Water Nutrient Dynamics
- French Urban and Social Studies
- Municipal Solid Waste Management
- Phosphorus and nutrient management
- Advanced Materials Characterization Techniques
- Catalytic Processes in Materials Science
- Mine drainage and remediation techniques
- Geochemistry and Elemental Analysis
- Marine Biology and Ecology Research
- Trace Elements in Health
Centre de Coopération Internationale en Recherche Agronomique pour le Développement
2012-2023
Analyses des eaux, sols et végétaux
2019-2023
Agropolis International
2014-2023
Université de Montpellier
2018-2023
Fountain University
2023
Forests and Societies
2019-2022
Centre de Recherche et d’Enseignement de Géosciences de l’Environnement
2013-2017
Centre National de la Recherche Scientifique
2006-2017
Institut de Recherche pour le Développement
2008-2017
Aix-Marseille Université
2013-2016
The study of the speciation highly diluted elements by X‐ray absorption spectroscopy (XAS) is extremely challenging, especially in environmental biogeochemistry sciences. Here we present an innovative synchrotron technique: high‐energy resolution fluorescence detected XAS (HERFD‐XAS). With this approach, measurement signal mode using a crystal analyzer spectrometer with ∼1‐eV energy helps to overcome restrictions on sample concentrations that can be typically measured solid‐state detector....
Mesocosms are an invaluable tool for addressing the complex issue of exposure during nanoecotoxicological testing. This experimental strategy was used to take into account parameters as interactions between NPs and naturally occurring (in)organic colloids (heteroaggregation), or flux compartments ecosystems (aqueous phase, sediments, biota) when assessing impacts CeO2 in aquatic ecosystems. In this study, we determine transfer, redox transformation, 1 mg L(-1) bare citrate coated CeO2-NPs...
The CeO2 NPs are increasingly used in industry but the environmental release of these and their subsequent behavior biological effects currently unclear. This study evaluates for first time on survival swimming performance two cladoceran species, Daphnia similis pulex after 1, 10 100 mg.L−1 exposures 48 h. Acute toxicity bioassays were performed to determine EC50 exposed daphnids. Video-recorded both daphnids was measure speeds various aggregated NPs. acute ecotoxicity showed that D. is 350...
Physical-chemists, (micro)biologists, and ecologists need to conduct meaningful experiments study the environmental risk of engineered nanomaterials with access relevant mechanistic data across several spatial temporal scales. Indoor aquatic mesocosms (60L) that can be tailored virtually mimic any ecosystem appear as a particularly well-suited device. Here, this concept is illustrated by pilot aimed at assessing distribution CeO₂-based nanomaterial within our system low concentration (1.5...
Indoor aquatic mesocosms were designed to mimic pond ecosystems contaminated by a continuous point-source discharge of cerium oxide nanoparticles (CeO<sub>2</sub>-NPs).
The toxicity of CeO2 NPs on an experimental freshwater ecosystem was studied in mesocosm, with a focus being placed the higher trophic level, i.e. carnivorous amphibian species Pleurodeles waltl. system comprised at three levels: (i) bacteria, fungi and diatoms, (ii) Chironomus riparius larvae as primary consumers (iii) secondary consumers. NP contamination consisted repeated additions over 4 weeks, to obtain final concentration 1 mg/L. were found settle accumulate sediment. No effects...
Zinc (Zn) is a potentially toxic trace element that present in large amounts organic wastes (OWs) spread on agricultural lands as fertilizer. Zn speciation OW crucial parameter to understand its fate soil after spreading and assess the risk associated with recycling of OW. Here, we investigated changes from raw OWs up digestates and/or composts for series sampled full-scale plants. Using extended X-ray absorption fine structure, show nanosized sulfide (nano-ZnS) major species liquid minor...
Abstract The stabilityand structure of aqueous complexes formed by pentavalent antimony (Sb V ) with simple organic ligands (acetic, adipic, oxalic, citric acids, catechol and xylitol) having O-functional groups (carboxyl, alcoholic hydroxyl, aliphatic aromatic hydroxyl) typical natural matter (NOM), were determined at 25°C from potentiometric X-ray absorption fine spectroscopy (XAFS) measurements. In organic-free solutions, spectroscopic data are consistent the dominant formation Sb...
Abstract. Identifying the drivers of soil organic carbon (SOC) stock changes is utmost importance to contribute global challenges like climate change, land degradation, biodiversity loss, or food security. Evaluating impacts use and management practices in agriculture forestry on SOC still challenging. Merging datasets making databases interoperable a promising way, but has several semantic challenges. So far, comprehensive thesaurus classification been lacking, especially while focusing...
The colloidal and chemical stability of CeO<sub>2</sub> nanoparticles used in a diesel additive (<italic>viz.</italic> Envirox™) was studied at different stages their lifecycle (formulation, use, end life).
Silver nanomaterials with different shapes (spheres, plates, wires, rods, cubes) are valued by industries and scientists for their shape-dependent properties which make them useful diverse applications.
Les plantations de palmiers phœnix ont une grande importance socio-économique et écologique en Tunisie. Actuellement, elles contiennent près trois millions d'arbres, qui assurent d'importants approvisionnements bois pour l'artisanat l'industrie du meuble. Autrefois, le palmier dattier était également utilisé comme matériau construction. Ses médiocres propriétés technologiques été améliorées par l'immersion dans l'eau salée naturelle des troncs fraîchement coupés. C’était pratique ancestrale...
International symposium: Urban and peri-urban horticulture in the century of cities 83 saleswomen markets.The mamans carrotte have increased their income nearly as quickly women producers.