Reactivity of U and co-occurring metals from mine deposits in a wetland under oxidizing conditions

Autor: Louise Darricau, Julia Cucinotta, Josselin Gorny, Arnaud Mangeret, Mathilde Zebracki, Alexandra Courtin

Between 1948 and 2001, the extraction of Uranium (U) ores in France have produced a large quantity of waste (tailings, waste rock, etc.), still containing U-rich minerals and other trace elements (TE), that were associated to the initial mineralizati

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3c6e26f1f56723d32891c57777f84c5c
https://doi.org/10.5194/egusphere-egu23-1127

Niobium speciation in minerals revealed by L2,3-edges XANES spectroscopy

Autor: Quentin Bollaert, Mathieu Chassé, Hebatalla Elnaggar, Amélie Juhin, Alexandra Courtin, Laurence Galoisy, Cécile Quantin, Marius Retegan, Delphine Vantelon, Georges Calas

Publikováno v: The American Mineralogist
The American Mineralogist, 2022, 108 (3), pp.595-605. ⟨10.2138/am-2022-8293⟩

The systematic mineralogy of niobium (Nb) is complex, with more than one hundred species dominated by multicomponent oxides of similar chemistry. The determination of Nb speciation in solids (i.e., the distribution between the phases and the crystal-

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5ce0e311a1ea4d8ff1cf7f1ba66d638c
https://hal.science/hal-03695880/file/bollaert_2021_ms_merged.pdf

Microscale distribution of trace elements: a methodology for accessing major bearing phases in stream sediments as applied to the Loire basin (France)

Autor: Cécile Grosbois, Alexandra Courtin-Nomade

Publikováno v: Journal of Soils and Sediments
Journal of Soils and Sediments, Springer Verlag, 2019, ⟨10.1007/s11368-019-02355-x⟩

International audience; Purpose The threat of trace elements (TE) stored in sediments depends on total concentrations, their chemical form, and also on the type of TE–particle association and their resultant stability. The presentstudy aimed at ide

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2e852219857d62d4e0a459d6ea9f909b
https://doi.org/10.1007/s11368-019-02355-x

Environmental stability and oral bioaccessibility of synthetic Pb-bearing phases to better evaluate soil health risks

Autor: Matthias Monneron-Gyurits, Patrice Fondanèche, Karine Cleries, Marilyne Soubrand, Emmanuel Joussein, Emmanuelle Ducloux, Alexandra Courtin-Nomade

Publikováno v: Environmental Science and Pollution Research
Environmental Science and Pollution Research, Springer Verlag, 2020, 27 (11), pp.12215-12226. ⟨10.1007/s11356-020-07744-1⟩

International audience; A large amount of contaminated sites is shown around the world which may induce a health risk due to the presence of contaminants such as metal (loid)s bearing phases. Health risk assessment is based on contaminant bioaccessib

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::aa9ae07dd3b734285af90e5cbdbb58ac
https://hal.archives-ouvertes.fr/hal-02943075

Phosphate removal from aqueous solutions using zero valent iron (ZVI): Influence of solution composition and ZVI aging

Autor: Michel Baudu, Véronique Kazpard, Martine Mallet, Mahmoud Wazne, Véronique Deluchat, Alexandra Courtin-Nomade, Nathalie Sleiman

Publikováno v: Colloids and Surfaces A: Physicochemical and Engineering Aspects
Colloids and Surfaces A: Physicochemical and Engineering Aspects, Elsevier, 2017, 514, pp.1-10. ⟨10.1016/j.colsurfa.2016.11.014⟩

This study investigates phosphate removal from water by ZVI and its oxidation products. The effects of ZVI aging, solution ionic strength, and co-existing anions, on the removal efficiency of phosphate were evaluated. X-ray Photoelectron Spectroscopy

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::290f01818946396d2f388498e32c5cfc
https://doi.org/10.1016/j.colsurfa.2016.11.014