Search Results - "Gélabert, Alexandre"

Zn Isotope Fractionation during Sorption onto Kaolinite by Guinoiseau, Damien, Gélabert, Alexandre, Moureau, Julien, Louvat, Pascale, Benedetti, Marc F

“…In this study, we quantify zinc isotope fractionation during its sorption onto kaolinite, by performing experiments under various pH, ionic strength, and total…”
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Single‐cell determination of iron content in magnetotactic bacteria: implications for the iron biogeochemical cycle by Amor, Matthieu, Tharaud, Mickaël, Gélabert, Alexandre, Komeili, Arash

“…Summary Magnetotactic bacteria (MTB) are ubiquitous aquatic microorganisms that mineralize dissolved iron into intracellular magnetic crystals. After cell…”
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Fate of particulate copper and zinc isotopes at the Solimões-Negro river confluence, Amazon Basin, Brazil by Guinoiseau, Damien, Bouchez, Julien, Gélabert, Alexandre, Louvat, Pascale, Moreira-Turcq, Patricia, Filizola, Naziano, Benedetti, Marc F.

“…The behaviour and fate of copper (Cu) and zinc (Zn) at river confluences is poorly understood, although chemical and physical processes during mixing of…”
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Zinc and copper behaviour at the soil-river interface: New insights by Zn and Cu isotopes in the organic-rich Rio Negro basin by Guinoiseau, Damien, Gélabert, Alexandre, Allard, Thierry, Louvat, Pascale, Moreira-Turcq, Patricia, Benedetti, Marc F.

“…The complex behaviour of Zn and Cu at the soil-river interface was investigated in soil and riverine water samples from the Rio Negro basin, a secondary…”
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Role of extracellular polymeric substances in metal ion complexation on Shewanella oneidensis: Batch uptake, thermodynamic modeling, ATR-FTIR, and EXAFS study by Ha, Juyoung, Gélabert, Alexandre, Spormann, Alfred M., Brown, Gordon E.

“…The effect of cell wall-associated extracellular polymeric substances (EPS) of the Gram-negative bacterium Shewanella oneidensis strain MR-1 on proton, Zn(II),…”
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Surface complexation modeling of interactions between freshwater and marine diatom species and trace elements (Mo, W, Cr, Ge, Ga, Al) by Gélabert, Alexandre, Pokrovsky, Oleg S., Schott, Jacques, Feurtet-Mazel, Agnes

“…Towards a better understanding of photosynthetic algae interaction with less common trace elements, we performed adsorption experiments of Al, Ga, Ge, Cr (VI),…”
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Mass-dependent and -independent signature of Fe isotopes in magnetotactic bacteria by Amor, Matthieu, Busigny, Vincent, Louvat, Pascale, Gélabert, Alexandre, Cartigny, Pierre, Durand-Dubief, Mickaël, Ona-Nguema, Georges, Alphandéry, Edouard, Chebbi, Imène, Guyot, François

“…Magnetotactic bacteria perform biomineralization of intracellular magnetite (Fe₃O₄) nanoparticles. Although they may be among the earliest microorganisms…”
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The geochemical filter of large river confluences by Guinoiseau, Damien, Bouchez, Julien, Gélabert, Alexandre, Louvat, Pascale, Filizola, Naziano, Benedetti, Marc F.

“…This study reports the behaviour and fate of major and trace elements in solid and solution in the Encontro das Aguas mixing zone in the Amazonian basin. This…”
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Chemical signature of magnetotactic bacteria by Amor, Matthieu, Busigny, Vincent, Durand-Dubief, Mickaël, Tharaud, Mickaël, Ona-Nguema, Georges, Gélabert, Alexandre, Alphandéry, Edouard, Menguy, Nicolas, Benedetti, Marc F., Chebbi, Imène, Guyot, François

“…Significance Magnetite precipitates through either abiotic or biotic processes. Magnetotactic bacteria synthesize nanosized magnetite intracellularly and may…”
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Experimental assessment of occurrences and stability of lead-bearing minerals in bacterial biofilms by Couasnon, Thaïs, Gélabert, Alexandre, Ona-Nguema, Georges, Zanna, Sandrine, Ménez, Bénédicte, Guyot, François

“…Bio-induced precipitation of lead-bearing minerals is investigated in bacterial biofilms grown by Shewanella oneidensis MR-1 under aerobic conditions. Under…”
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A frugal implementation of Surface Enhanced Raman Scattering for sensing Zn2+ in freshwaters – In depth investigation of the analytical performances by Brackx, Gwennhaël, Guinoiseau, Damien, Duponchel, Ludovic, Gélabert, Alexandre, Reichel, Victoria, Zrig, Samia, Meglio, Jean-Marc Di, Benedetti, Marc F., Gaillardet, Jérôme, Charron, Gaëlle

“…Surface Enhanced Raman Scattering (SERS) has been widely praised for its extreme sensitivity but has not so far been put to use in routine analytical…”
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Iron uptake and magnetite biomineralization in the magnetotactic bacterium Magnetospirillum magneticum strain AMB-1: An iron isotope study by Amor, Matthieu, Busigny, Vincent, Louvat, Pascale, Tharaud, Mickaël, Gélabert, Alexandre, Cartigny, Pierre, Carlut, Julie, Isambert, Aude, Durand-Dubief, Mickaël, Ona-Nguema, Georges, Alphandéry, Edouard, Chebbi, Imène, Guyot, François

“…Magnetotactic bacteria (MTB) produce intracellular, membrane-bounded magnetite [Fe(II)Fe(III)2O4] crystals in a genetically controlled way. They are ubiquitous…”
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Non-Hydroxyl Radical Species Production during Dark Air Oxidation of Alluvial Soils by Bourbon, Elora, Averseng, Frédéric, Le Pape, Pierre, Allard, Thierry, Baratelli, Fulvia, Alliot, Fabrice, Gélabert, Alexandre, Rollot, Valentine, Guigon, Elodie, Brest, Jessica, Nélieu, Sylvie, Morin, Guillaume

“…Natural environments subjected to hydrologically driven redox fluctuations are regarded as propitious to contaminant degradation since they favor the cyclic…”
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Evidence of Zn isotopic fractionation in a soil–plant system of a pristine tropical watershed (Nsimi, Cameroon) by Viers, Jérôme, Oliva, Priscia, Nonell, Anthony, Gélabert, Alexandre, Sonke, Jeroen E., Freydier, Rémi, Gainville, Romuald, Dupré, Bernard

“…The objective of this study is to determine for the first time the zinc (Zn) isotopic composition of different soil horizons, parent rocks, litter, and plants…”
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Effect of biofilm coatings at metal-oxide/water interfaces I: Pb(II) and Zn(II) partitioning and speciation at Shewanella oneidensis/metal-oxide/water interfaces by Wang, Yingge, Gélabert, Alexandre, Michel, F. Marc, Choi, Yongseong, Gescher, Johannes, Ona-Nguema, Georges, Eng, Peter J., Bargar, John R., Farges, Francois, Spormann, Alfred M., Brown, Gordon E.

“…Microbial biofilms are often present as coatings on metal-oxide surfaces in natural and industrial environments and may induce significant changes in the…”
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Effect of biofilm coatings at metal-oxide/water interfaces II: Competitive sorption between Pb(II) and Zn(II) at Shewanella oneidensis/metal-oxide/water interfaces by Wang, Yingge, Gélabert, Alexandre, Michel, F. Marc, Choi, Yongseong, Eng, Peter J., Spormann, Alfred M., Brown, Gordon E.

“…Competitive sorption of Pb(II) and Zn(II) on Shewanella oneidensis MR-1 biofilm-coated single-crystal α-Al2O3 (1−102) and α-Fe2O3 (0001) surfaces was…”
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Occurrence and Origins of Cerium Dioxide and Titanium Dioxide Nanoparticles in the Loire River (France) by Single Particle ICP-MS and FEG-SEM Imaging by Phalyvong, Karine, Sivry, Yann, Pauwels, Hélène, Gélabert, Alexandre, Tharaud, Mickaël, Wille, Guillaume, Bourrat, Xavier, Benedetti, Marc F.

“…The need to quantify engineered nanoparticles (ENPs) in the environment is due to the increasing incorporation of these particles in the daily products, which…”
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Solid/liquid ratios of trace elements and radionuclides during a Nuclear Power Plant liquid discharge in the Seine River: Field measurements vs geochemical modeling by Ilina, Svetlana M., Marang, Laura, Lourino-Cabana, Beatriz, Eyrolle, Frédérique, Boyer, Patrick, Coppin, Frederic, Sivry, Yann, Gélabert, Alexandre, Benedetti, Marc F.

“…This study focuses on the determination of field solid/liquid ratios (Rd) values of trace element (TE) and radionuclide (RN) in the Seine River (France) during…”
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Interaction between Escherichia coli and TiO2 nanoparticles in natural and artificial waters by Planchon, Mariane, Ferrari, Roselyne, Guyot, François, Gélabert, Alexandre, Menguy, Nicolas, Chanéac, Corinne, Thill, Antoine, Benedetti, Marc F., Spalla, Olivier

“…[Display omitted] ► We assess the toxicity of TiO2 nanoparticles toward E. coli bacteria. ► We use natural water to simulate nanoparticles aggregation in the…”
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In situ monitoring of exopolymer-dependent Mn mineralization on bacterial surfaces by Couasnon, Thaïs, Alloyeau, Damien, Ménez, Bénédicte, Guyot, François, Ghigo, Jean-Marc, Gélabert, Alexandre

“…Bacterial biomineralization is a widespread process that affects cycling of metals in the environment. Functionalized bacterial cell surfaces and exopolymers…”
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