Personal profile

Research Interests

The primary focus of the research performed in my group is to understand the biogeochemical processes that affect the fate of metals in aquatic systems. A special emphasis is to elucidate how the chemical speciation of metals controls their biouptake/bioavailability focusing on microbial species, since microorganisms constitute the foundation of any ecological system. We are conducting field studies, laboratory experiments, and using modeling approaches based on advanced analytical, microscopic, and spectroscopic methods. Our most recent activities have been centered on the chemical fate of As, Ni, and Hg in aquatic environments as well as on the environmental impacts of nano-structured materials commonly used.

Education / Academic qualification

Docteur Ès Sciences Physiques: Chimie-Géochimie, Université Paris 7 & Institut de Physique du Globe de Paris

… → 1987

Docteur 3ieme Cycle: Water Sciences, Université Pierre et Marie Curie

… → 1982

Diplôme d'Etudes Approfondies: Sciences de l'Eau, Université Pierre et Marie Curie

… → 1980

Mâtrise de Sciences et Techniques Air et Eau, Universite de Savoie

… → 1979


  • Environmental Chemistry
  • Metal Speciation
  • Environmental geochemistry: Metal speciation and biogeochemical cycling of metals and metalloids
  • Biogeochemical Cycling of Metals and Metalloids
  • x-ray absoprtion spectroscopy

Fingerprint Fingerprint is based on mining the text of the persons scientific documents to create an index of weighted terms, which defines the key subjects of each individual researcher.

Sediments Chemical Compounds
sediment Earth & Environmental Sciences
Lakes Chemical Compounds
Metals Chemical Compounds
diagenesis Earth & Environmental Sciences
porewater Earth & Environmental Sciences
organic matter Earth & Environmental Sciences
Zinc Engineering & Materials Science

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Research Output 1984 2018

  • 2651 Citations
  • 94 Article
  • 14 Chapter
  • 3 Other contribution
  • 1 Conference contribution

Interplay between flow and bioturbation enhances metal efflux from low-permeability sediments

Xie, M., Wang, N., Gaillard, J. F. & Packman, A. I. Jan 1 2018 In : Journal of Hazardous Materials. 341, p. 304-312 9 p.

Research output: Contribution to journalArticle


Synergistic Bacterial Stress Results from Exposure to Nano-Ag and Nano-TiO2 Mixtures under Light in Environmental Media

Wilke, C. M., Wunderlich, B., Gaillard, J. F. & Gray, K. A. Mar 6 2018 In : Environmental Science and Technology. 52, 5, p. 3185-3194 10 p.

Research output: Contribution to journalArticle

Nanostructured materials
Titanium dioxide
Escherichia coli

The critical role of light in moderating microbial stress due to mixtures of engineered nanomaterials

Wilke, C. M., Gaillard, J. F. & Gray, K. A. Jan 1 2018 In : Environmental Science: Nano. 5, 1, p. 96-102 7 p.

Research output: Contribution to journalArticle

Nanostructured materials
Tamper resistant packaging
Dedicated short range communications
5 Citations
Escherichia coli
atomic absorption spectroscopy
5 Citations

Attenuation of Microbial Stress Due to Nano-Ag and Nano-TiO2 Interactions under Dark Conditions

Wilke, C. M., Tong, T., Gaillard, J. F. & Gray, K. A. Oct 18 2016 In : Environmental Science and Technology. 50, 20, p. 11302-11310 9 p.

Research output: Contribution to journalArticle

Nanostructured materials