Fate and speciation of antimony during pyrite formation at low temperature
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https://doi.esrf.fr/10.15151/ESRF-ES-2043620282
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资源简介：
The geochemical behavior of Sb under reducing conditions is closely linked to the formation of digenetic iron sulfides. Since very few data is currently available on Sb speciation in such minerals, including pyrite (FeS2) ubiquitously found in surface environments, we aim at obtaining molecular scale information by performing XANES/EXAFS measurements at the Sb K-edge (30,491 eV) on synthetic FeS and FeS2 samples representative of continental sedimentary surface environments. Redox and structural information gained from XAS spectroscopy will be used together with Sb concentrations in solutions (ICP-MS), and with XRD measurement. such information is crucial to uncover the steps of Sb biogeochemical cycle in reducing surface environments and to propose conceptual models for Sb speciation in soil and sedimentary reservoirs.
提供机构：
CNRS UMR 7590 - IMPMC, Inst. Minér. et de Physique des Milieux Cond., Université Pierre et Marie Curie, Case 115 4 Place Jussieu, 75252 Paris Cedex 05, France; CNRS UMR 5569 - Universite de Montpellier II, Laboratoire Hydrosciences, Place E. Bataillon, 34095 , Montpellier, FR; Universite Pierre et Marie Curie - URA 782, Laboratoire de Physique des Milieux Condenses, 4 place Jussieu, 75252 Paris Cedex 05, France; Sorbonne Universite - CNRS - MNHN - IRD, IMPMC, 4 place Jussieu campus Jussieu boite 115, 75005, Paris, FR; Sorbonne Universite - CNRS - MNHN - IRD, Faculté des Sciences et Ingéniérie, IMPM Campus Pierre & Marie Curie, case 115, 4 Place Jussieu, 75252 Paris Cedex 05, France
创建时间：
2028-01-01
