Zobrazeno 1 - 10 of 62 pro vyhledávání: '"Rémi Marsac"'
1
Akademický článek
More than redox, biological organic ligands control iron isotope fractionation in the riparian wetland
Autor: Elaheh Lotfi-Kalahroodi, Anne-Catherine Pierson-Wickmann, Olivier Rouxel, Rémi Marsac, Martine Bouhnik-Le Coz, Khalil Hanna, Mélanie Davranche
Publikováno v: Scientific Reports, Vol 11, Iss 1, Pp 1-12 (2021)
Abstract Although redox reactions are recognized to fractionate iron (Fe) isotopes, the dominant mechanisms controlling the Fe isotope fractionation and notably the role of organic matter (OM) are still debated. Here, we demonstrate how binding to or
Externí odkaz: https://doaj.org/article/1deeff4d6f30401183296c4c5f5b8778
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2
Akademický článek
An easy spectrophotometric acid-base titration protocol for dissolved organic matter
Autor: Marawit Tesfa, Aline Dia, Malou Ollivier, Iván-David Osorio-Leon, Rémi Marsac
Publikováno v: MethodsX, Vol 9, Iss , Pp 101721- (2022)
UV-vis spectrophotometric acid-base titration can characterize dissolved organic matter (DOM) acid-base properties. However, it requires incremental pH adjustment, which make the procedure time consuming and the results subjected to dilution effect.
Externí odkaz: https://doaj.org/article/01722025f9444a2d8133dded24562b22
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5
Varying growth behavior of redox-sensitive nanoparticles on 1:1 and 2:1 clay surfaces: Mechanistic insights on preferential toxic ions removal in mono, co, and multi-metal contaminated waters
Autor: Nitin Khandelwal, Nisha Singh, Ekta Tiwari, Rémi Marsac, Dieter Schild, Thorsten Schäfer, Gopala Krishna Darbha
Publikováno v: Chemical Engineering Journal
Chemical Engineering Journal, 2023, 461, pp.141883. ⟨10.1016/j.cej.2023.141883⟩
Chemical Engineering Journal, 461, 141883
International audience; In the current study, contrasting growth behaviour of redox sensitive Fe0 nanoparticles (nZVI)was observed on different clay surfaces i.e., 1:1 non-swelling kaolinite (K-nZVI) and 2:1swelling bentonite (B-nZVI). Osmotic swelli
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::879e56e77796aff8f07929ed2bcc8a95
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6
Prediction of nanomagnetite stoichiometry (Fe(II)/Fe(III)) under contrasting pH and redox conditions
Autor: Phoomipat Jungcharoen, Mathieu Pédrot, Frank Heberling, Khalil Hanna, Fadi Choueikani, Charlotte Catrouillet, Aline Dia, Rémi Marsac
Publikováno v: Environmental science‎.Nano
Environmental science‎.Nano, 2022, 9 (7), pp.2363-2371. ⟨10.1039/d2en00112h⟩
International audience; Magnetite (Fe(III)2Fe(II)O4) nanoparticles are fascinating nanoparticulate minerals for their electronic, magnetic and chemical properties. Ubiquitous, in the environment, they are also among the most used ferromagnetic nanoma
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6697af84befc043faebf12592d05af8b
https://insu.hal.science/insu-03681055
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7
Metal-binding processes on Nanoplastics : Rare earth elements as a probe
Autor: Florent Blancho, Mélanie Davranche, Rémi Marsac, Adrien Léon, Aline Dia, Bruno Grassl, Stéphanie Reynaud, Julien Gigault
Publikováno v: Environmental science‎.Nano
Environmental science‎.Nano, 2022, 9 (6), pp.2094-2103. ⟨10.1039/D2EN00048B⟩
International audience; The nanoplastics presence in the ocean and soil demonstrates their global distribution in the environment. Due to their colloidal properties, nanoplastics could influence trace metal speciation in natural matrices, which has b
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c907eee628c5e16254eaf5b648789115
https://hal-insu.archives-ouvertes.fr/insu-03651384
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8
Absolute and Relative Positioning of Natural Organic Matter Acid–Base Potentiometric Titration Curves: Implications for the Evaluation of the Density of Charged Reactive Sites
Autor: Marawit Tesfa, Jérôme F. L. Duval, Rémi Marsac, Aline Dia, Jose-Paulo Pinheiro
Publikováno v: Environmental Science and Technology
Environmental Science and Technology, 2022, 56 (14), pp.10494-10503. ⟨10.1021/acs.est.2c00828⟩
Environmental Science and Technology, American Chemical Society, 2022, 56 (14), pp.10494-10503. ⟨10.1021/acs.est.2c00828⟩
International audience; Potentiometric acid–base titration curves collected on humic (nano)particles as a function of pH and salt concentration reflect the electrostatics of the particles and the amount of chemical charges (Q) they carry. In turn,
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7d0bd257e54d7508e326a25d9fd7e07d
https://hal.univ-lorraine.fr/hal-03704908/document
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9
An easy spectrophotometric acid-base titration protocol for dissolved organic matter
Autor: Marawit Tesfa, Aline Dia, Malou Ollivier, Iván-David Osorio-Leon, Rémi Marsac
Publikováno v: MethodsX
MethodsX, 2022, 9, pp.101721. ⟨10.1016/j.mex.2022.101721⟩
International audience; UV-vis spectrophotometric acid-base titration can characterize dissolved organic matter (DOM) acid-base properties. However, it requires incremental pH adjustment, which make the procedure time consuming and results are subjec
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::87f3737544e8b94f147f286a471c3c0d
https://pubmed.ncbi.nlm.nih.gov/35592462
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10
Reactive transport of Rare Earth Elements: surface complexation with quartz surfaces and modeling investigations
Autor: Rémi Marsac, Muqeet IqbaI, Khalil Hanna
Publikováno v: Goldschmidt 2021
Goldschmidt 2021, Jul 2021, Virtual, France. ⟨10.7185/gold2021.4281⟩
International audience; Rare Earth Elements (REE) are not only considered as high-technology components but also as contaminants of emergingconcern creating long-term ecological effects when released intoecosystems. However, there is a lack of compre
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c82afef73bf32f18f9557f42a83db2c0
https://insu.hal.science/insu-03472805
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