A5033064978- Radioactive contamination and transfer
- Soil Carbon and Nitrogen Dynamics
- Radioactive element chemistry and processing
- Radioactivity and Radon Measurements
- Mycorrhizal Fungi and Plant Interactions
- Heavy metals in environment
- Insect Resistance and Genetics
- Clay minerals and soil interactions
- Soil and Unsaturated Flow
- Insect and Pesticide Research
- Iron oxide chemistry and applications
- Biocrusts and Microbial Ecology
- Forest Ecology and Biodiversity Studies
- Phosphorus and nutrient management
- Genetically Modified Organisms Research
- Plant nutrient uptake and metabolism
- Entomopathogenic Microorganisms in Pest Control
- Soil and Water Nutrient Dynamics
- Chemical Synthesis and Characterization
- Groundwater flow and contamination studies
- Nuclear and radioactivity studies
- Prion Diseases and Protein Misfolding
- Plant Micronutrient Interactions and Effects
- Soil erosion and sediment transport
- Polymer Surface Interaction Studies
Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement
1993-2025
Centre de Coopération Internationale en Recherche Agronomique pour le Développement
2015-2025
Institut de Recherche pour le Développement
2015-2025
Institut Agro Montpellier
2011-2025
Université de Montpellier
2010-2025
Ecologie fonctionnelle & biogéochimie des sols & des agro-systèmes
2015-2024
L'Institut Agro
2023
Institut National de la Recherche Agronomique
2002-2012
Institut Européen des Membranes
2010
École Nationale Supérieure de Chimie de Montpellier
2010
Summary The effect of pH and the addition carboxylates (acetate, oxalate, tartrate, salicylate citrate) on solubility soil phosphate has been investigated to assess possible effects root exudates availability. was a neutral calcic Luvisol with large buffer capacity. Various concentrations strong acid (0–20 mmol kg −1 ) anion (0–2 were applied in suspension (0.5 g cm −3 ). 2 oxalate adsorption isotherm also studied. rate isotopic exchange largely unchanged by any treatments. Neither nor...
SUMMARY A simple mechanistic model is developed for predicting the fate of radioactive caesium in soil beneath grassland. continuity equation derived describing diffusion, leaching and reaction soil, with uptake by a uniformly distributed root system. The characterized three phases: an instantaneous exchange, moderately‐fast reversible slow reaction. time‐dependent reactions have first‐order kinetics. It shown that unlikely to be removed from zone even under prolonged high rainfall....
Summary Radiocaesium is more available to biological systems in organic soils than mineral soils. Part of the reason that adsorption caesium on minerals, particularly illites, very specific, whereas its matter non‐specific. However, increasing evidence shows even upland contain enough illitic material immobilize effectively. The presence may reduce affinity soil minerals for caesium. We have studied radiocaesium clay fractions a obtained from surface, and corresponding C, horizon. were...
The strong correlation observed in situ between the bioavailability of radiocesium and soil organic matter content is paradoxical given lack coordination chemistry cesium its affinity for clay minerals. aim this work to determine whether adsorption polymers, a protein polysaccharide, on reference minerals decreases adsorption. Measurements were carried out dilute suspensions montmorillonite or illite, varying initial polymer concentration, pH, ionic strength. Planar surfaces also blocked...
Prions, the infectious agents thought to be responsible for transmissible spongiform encephalopathies, may contaminate soils and have been reported persist there years. We studied adsorption desorption of a model recombinant prion protein on montmorillonite natural soil samples in order elucidate mechanisms retention soils. Clay minerals, such as montmorillonite, are known strong adsorbents organic molecules, including proteins. Montmorillonite was found large selective capacity both normal...
Summary Thermostable soil protein, known as glomalin, is an important component of carbon stocks. Thought to originate from endomycorrhizal fungi, G lomales, this operationally‐defined fraction organic matter contains proteins diverse origin well non‐protein material, including humic substances. Accumulation results the balance between production/release and subsequent degradation. Quantification protein subject uncertainty because co‐extraction other components that interfere with B radford...
Summary Organic matter can be removed from soil to varying extents using many chemical methods, but little information may obtained on the nature of organic thus and its interactions with mineral components. We selected two surface soils, similar carbon contents. Chemical analysis showed presence a range amino acids sugars. Quantitative mineralogical revealed some differences between particularly in poorly crystallized The clay‐sized fractions were submitted various treatments, then...
Glomalin‐related soil protein (GRSP), an operationally defined fraction of organic matter containing and various other components, is usually quantified using the colorimetric nonspecific Bradford method. This method limited by a short working range, nonlinear response interference from co‐extracted compounds. These limitations hinder exact quantification component. The aim this study was to investigate source in GRSP propose several methodological improvements based on identified...