Multi-scale characterisation of the bearing phases of the metallic pollutants Zn and Pb in a deposited sediment : from field studies to synchrotron radiation analysis
type: Dataset
description: Sediments originating from periodic dredging of waterways were traditionally deposited on soil without specific precaution or planed treatments. It may be of environmental concern especially when they came from areas historically contaminated with metallic pollutants like in the north French coal basin which is also well industrialised. The main risk is a migration Metallic Trace Elements (MTE) in the underlying soil and groundwater. This study aims to identify and characterise the mineralogical bearing phases of the MTE (limited here to Zn et Pb) by combining various techniques, analytical, chemical and spectroscopic. In this work, we show that in the case of a complex material as our studied anthroposol, it is important to have a multi-scale. Then, we have carried out field analyses, laboratory studies Sequential chemical extraction, XRD, SEM and EPMA) and synchrotron radiation experiment (mainly XRF and XANES). We have indentified various bearing phases of Zn and Pb, but we didn’t observe any clear evolution as a function of the depth. To conclude, we give several directions for completing this work.
landing page: https://theses.hal.science/tel-00840257
identifier: NNT: 2012ORLE2061
keyword: analyse-multi-echelles
keyword: bearing-phase
keyword: infoeu-reposemanticsdoctoralthesis
keyword: metallic-pollutants
keyword: multi-scale-analysis
keyword: phase-porteuse
keyword: physcondcm-genphysics-physicscondensed-matter-cond-matother-cond-matother
keyword: polluants-metalliques
keyword: sediments
keyword: synchrotron
keyword: theses
issued: 2026-05-10T12:24:01.703033
modified: 2026-05-10T12:24:01.703037
language: fr
contact point: Organization
  fn: CCSD

test_moissonnage_selune
type: Agent

Multi-scale characterisation of the bearing phases of the metallic pollutants Zn and Pb in a deposited sediment : from field studies to synchrotron radiation analysis
type: Distribution
format: HTML
access URL: https://theses.hal.science/tel-00840257
issued: 2026-05-10T12:24:01.708246
modified: 2026-05-10T12:24:01.692541