GEOCTuesday, 12 September 2006

8:15 AM-11:55 AM Moscone Center -- Room 256, Oral
Physical Chemistry of Soil and Aquifer Systems: A Symposium in Honor of Garrison Sposito
Particle Structure and Reactivity
Organizers:Javiera Cervini-Silva
Jon Chorover
Patricia A. Maurice
Stephan Krämer
8:15 AMNatural nanocrystalline birnessites
Alain Manceau, Bruno Lanson
8:40 AMNovel synthesis of layer-structured black birnessite nanomaterial from brown birnessite with complex shape under controlled oxygen and acidic conditions
Marcos A. Cheney, Nancy R. Birkner, Longzhou Ma, Thomas Hartmann, Pradip K. Bhowmik, Vernon F. Hodge
9:05 AMPu interactions with synthetic hausmannite (Mn3O4) and manganite (g-MnOOH)
Brian A. Powell, Robert A Fjeld, Daniel I. Kaplan, Steven M. Serkiz
9:30 AMOxidative transformation of tetracycline antibiotics by manganese dioxide
Kennedy F. Rubert IV, Joel A. Pedersen
9:55 AMIntermission
10:15 AMMolecular approach towards understanding the biogenic formation of CeO2 and its interactions with biomolecules
Javiera Cervini-Silva, Benjamin Gilbert, Sirine C. Fakra, Stephan Dietrich, Jillian Banfield
10:40 AMReactivity of ferrous iron in anoxic environments: Electron transfers in Se(IV)-Fe(II)-mineral systems
Laurent Charlet, Andreas C. Scheinost, Jean Marc Greneche, Christophe Tournassat, Antoine Géhin, Severine Coudert, Jocelyne Brendle
11:05 AMGeochemical distribution of natural organochlorine in decaying plant material
Alessandra C. Leri, Matthew A. Marcus, Satish C. B. Myneni
11:30 AMStructure and reactivity of humic substances detected by spectroscopic tools
Ladislau Martin-Neto

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The 232nd ACS National Meeting, San Francisco, CA, September 10-14, 2006