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24, chemin de Borde Rouge -Auzeville - CS52627 31326 Castanet Tolosan cedex - France

Last update: May 2021

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JANOT Noémie


JANOT Noémie

INRA Centre de Bordeaux Aquitaine
71 avenue E. Bourlaux
CS 20032 33882 Villenave d'Ornon cedex
Tel : +33 (0)


 2019-new Researcher at INRAE, UMR ISPA (Villenave d’Ornon, France)

 2015-19 Université de Lorraine (Postdoctoral fellow), Laboratoire Interdisciplinaire des Écosystèmes Continentaux (LIEC)/Laboratoire Sols et Environnement (LSE) (Vandœuvre-lès-Nancy, France)

Modeling the environmental impact of rare earth elements (REEs).

2011-13 Stanford University (Postdoctoral fellow), SLAC National Accelerator Laboratory (Menlo Park, Etats-Unis)

Biogeochemical study of chemical and physical forms of uranium and carbon in reduced aquifer sediments.

2011 PhD in Geosciences, Université Paris-Diderot, CEA Saclay (Molecules and Radionuclides Speciation Laboratory) & Institut de Physique du Globe de Paris (Water Geochemistry Group)

Influences of natural organic matter and mineral surfaces on radionuclides speciation in the environment


2007 Engineering graduate of ENSG (Nancy School of Geology, France), Specialty in Mineral Resources

Research interests

My research focuses on analysis and understanding of biogeochemical processes controlling the behavior and mobility of metals in terrestrial and aquatic ecosystems. To do so, I develop conceptual or numerical models of the interactions controlling the speciation of contaminants, in order to be able to predict their behavior under various environmental conditions and build relevant remediation strategies.

More specifically, my work concerns the behavior of trace metals (uranium, europium and the whole spectra of rare earth elements, nickel, copper) in human-impacted systems such as mining sites or agricultural lands. To characterize these systems I use a large range of experimental techniques (spectroscopy, microscopy, electrochemistry) with an approach combining lab experiments, geochemical modeling and field observations and experiments. My work thus cover a wide range of spatio-temporal scales, from colloids surface analysis to elemental dynamics within an aquifer. I aim at identifying the processes at stake at short term (few days) and projecting the observations made to the long-term scale.


Speciation of contaminants in the critical zone

Organo-mineral interactions

Modeling of biogeochemical processes


  • X-Ray Absorption Spectroscopy (XAS)
  • X-Ray Microscopy (microprobe, STXM)
  • Time-Resolved Laser Spectroscopy Luminescence
  • Carbon content measurement, dissolved (Shimadzu TOC-VCSH) and solid (Carlo Erba CN Elemental Analyzer)
  • Potentiometric titrations
  • UV/Visible spectrophotometry
  • Voltammetry
  • Donnan Membrane Technique
  • Speciation software: ECOSAT-FIT, Visual MINTEQ, PEST-ORCHESTRA
  • Geostatistic software: ISATIS, GOCAD


  1. Zelano et al. (2018) The influence of organic complexation onNi isotopic fractionation and Ni recycling in the upper soil layers, Chemical Geology (DOI:10.1016/j.chemgeo.2018.02.023).
  2. Botero et al. (2018) Isolation and purifications treatments change the metal binding properties of humic acids: effect of the HF/HCl treatment, Environmental Chemistry, 14, 417-424.
  3. Noël et al. (2017) Redox controls over the stability of U(IV) in the floodplains of Upper Colorado River Basin, Environmental Science & Technology, 51(19), 10954-64.
  4. Noël et al. (2017) Understanding controls on redox processes in floodplain sediments of the Upper Colorado River Basin, Science of the Total Environment, 603-604, 663-75.
  5. Janot et al. (2017) PEST-ORCHESTRA, a tool for optimizing advanced ion-binding model parameters: derivation of NICA-Donnan model parameters for humic substances reactivity, Environmental Chemistry, 14, 31-38.
  6. Janot et al. (2016), Physico-chemical heterogeneity of organic-rich sediments in the Rifle aquifer, CO: Impact on uranium biogeochemistry, Environmental Science & Technology, 50(1), 46-53.
  7. Herndon et al. (2015) Geochemical drivers of organic matter decomposition in the active layer of Arctic tundra, Biogeochemistry, 126(3), 397-414.
  8. Gallegos et al. (2015), Persistent uranium following Uranium In-Situ Recovery (ISR) from a sandstone uranium deposit, Wyoming, USA, Applied Geochemistry, 63, 222-234.
  9. Alessi et al. (2014), Speciation and reactivity of uranium products formed during in situ bioremediation in a shallow alluvial aquifer, Environmental Science & Technology, 48(21), 12842-12850.
  10. Qafoku et al. (2013) Geochemical and mineralogical investigation of uranium in multi – element contaminated, organic – rich subsurface sediment, Applied Geochemistry, 42, 77-85.
  11. Janot et al. (2013) Influence of solution parameters on europium (III), α-Al2O3 and humic acid interactions: Macroscopic and time-resolved laser-induced luminescence data, Geochimica et Cosmochimica Acta, 123, 35-54.
  12. Orellana et al. (2013) U(VI) Reduction by a Diversity of Outer Surface C-Type Cytochromes of Geobacter sulfurreducens, Applied and Environmental Microbiology, 79(20), 6369-6374.
  13. Janot et al. (2013) Modelling Eu(III) speciation in a Eu(III)/PAHA/α-Al2O3 ternary system, Colloids and Surfaces A, 435, 9-15.
  14. Janot et al. (2012) Characterization of humic reactivity modifications due to adsorption onto α-Al2O3, Water Research, 46(3), 731-740.
  15. Janot et al. (2011) Colloidal α-Al2O3, Europium(III) and Humic Substances Interactions: A Macroscopic and Spectroscopic Study, Environmental Science & Technology, 45(8), 3224-3230.
  16. Janot et al. (2010) Using spectrophotometric titrations to characterize humic acid reactivity at environmental concentration, Environmental Science & Technology, 44(17), 6782-6788.