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Synchrotron X-ray studies of heavy metal mineral-microbe interactions

Published online by Cambridge University Press:  05 July 2018

G. E. Brown Jr. ,
Y. Wang ,
A. Gélabert ,
J. Ha ,
C. Cismasu ,
G. Ona-Nguema ,
K. Benzerara ,
J. Miot ,
N. Menguy  and
G. Morin
...Show all authors
G. E. Brown Jr.*
Affiliation:
Surface and Interface Geochemistry Group, Department of Geological and Environmental Sciences, Stanford University, Stanford, CA 94305-2115, USA Stanford Synchrotron Radiation Laboratory, SLAC, MS 69, 2575 San Hill Road, Menlo Park, CA 94025, USA
Y. Wang
Affiliation:
Surface and Interface Geochemistry Group, Department of Geological and Environmental Sciences, Stanford University, Stanford, CA 94305-2115, USA Institut de Minéralogie et de Physique des Milieux Condensés, UMR 7590, CNRS, Universités Paris 6 et Paris 7, and IPGP, 140 rue de Lourmel, 75015 Paris, France
A. Gélabert
Affiliation:
Surface and Interface Geochemistry Group, Department of Geological and Environmental Sciences, Stanford University, Stanford, CA 94305-2115, USA
J. Ha
Affiliation:
Surface and Interface Geochemistry Group, Department of Geological and Environmental Sciences, Stanford University, Stanford, CA 94305-2115, USA
C. Cismasu
Affiliation:
Surface and Interface Geochemistry Group, Department of Geological and Environmental Sciences, Stanford University, Stanford, CA 94305-2115, USA
G. Ona-Nguema
Affiliation:
Surface and Interface Geochemistry Group, Department of Geological and Environmental Sciences, Stanford University, Stanford, CA 94305-2115, USA Institut de Minéralogie et de Physique des Milieux Condensés, UMR 7590, CNRS, Universités Paris 6 et Paris 7, and IPGP, 140 rue de Lourmel, 75015 Paris, France
K. Benzerara
Affiliation:
Institut de Minéralogie et de Physique des Milieux Condensés, UMR 7590, CNRS, Universités Paris 6 et Paris 7, and IPGP, 140 rue de Lourmel, 75015 Paris, France
J. Miot
Affiliation:
Institut de Minéralogie et de Physique des Milieux Condensés, UMR 7590, CNRS, Universités Paris 6 et Paris 7, and IPGP, 140 rue de Lourmel, 75015 Paris, France
N. Menguy
Affiliation:
Institut de Minéralogie et de Physique des Milieux Condensés, UMR 7590, CNRS, Universités Paris 6 et Paris 7, and IPGP, 140 rue de Lourmel, 75015 Paris, France
G. Morin
Affiliation:
Institut de Minéralogie et de Physique des Milieux Condensés, UMR 7590, CNRS, Universités Paris 6 et Paris 7, and IPGP, 140 rue de Lourmel, 75015 Paris, France
F. Juillot
Affiliation:
Institut de Minéralogie et de Physique des Milieux Condensés, UMR 7590, CNRS, Universités Paris 6 et Paris 7, and IPGP, 140 rue de Lourmel, 75015 Paris, France
F. Guyot
Affiliation:
Institut de Minéralogie et de Physique des Milieux Condensés, UMR 7590, CNRS, Universités Paris 6 et Paris 7, and IPGP, 140 rue de Lourmel, 75015 Paris, France
G. Calas
Affiliation:
Institut de Minéralogie et de Physique des Milieux Condensés, UMR 7590, CNRS, Universités Paris 6 et Paris 7, and IPGP, 140 rue de Lourmel, 75015 Paris, France
F. Farges
Affiliation:
Unité Minéralogie-Pétrologie (USM 201), Muséum National d’Histoire Naturelle and CNRS UMR 7160, Paris, France
T. P. Trainor
Affiliation:
Department of Chemistry and Biochemistry, University of Alaska Fairbanks, Fairbanks, AK 99775-6160, USA
J. Gescher
Affiliation:
Department of Chemical Engineering, Stanford University, Stanford, CA 94305-5025, USA
C. Cordova
Affiliation:
Department of Chemical Engineering, Stanford University, Stanford, CA 94305-5025, USA
A. M. Spormann
Affiliation:
Department of Chemical Engineering, Stanford University, Stanford, CA 94305-5025, USA
*
*E-mail: [email protected]
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Extract

The availability of analytical methods that utilize the very intense and bright X-rays from synchrotron radiation sources has fundamentally changed the way in which geoscientists, environmental scientists and soil scientists study complex environmental samples and decipher the chemical and biological processes that impact the speciation, transport and potential bioavailability of environmental toxins (Brown et al., 2006). Such samples are often mixtures of crystalline and amorphous phases in particle-sizes ranging from cm to nm, adsorbed metal ions and organic molecules, natural organic matter, microbial organisms, algae, plant materials and aqueous solutions. The processes that affect the chemical forms and environmental fate of contaminants in such mixtures range from surface adsorption, desorption, precipitation and dissolution reactions, often involving a combination of hydrolysis, ligand exchange and electron transfer, to biological interactions in which microbial organisms, algae or plants interact with mineral surfaces and environmental contaminants.

Type
Research Article
Information
Mineralogical Magazine , Volume 72 , Issue 1 , February 2008 , pp. 169 - 173
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 2008

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References

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