AVS 60th International Symposium and Exhibition
    Ions at Aqueous Interfaces Focus Topic Tuesday Sessions
       Session IA+BA-TuA

Paper IA+BA-TuA12
Aqueous Solution Chemistry Studied by Soft X-ray Absorption Spectroscopy

Tuesday, October 29, 2013, 5:40 pm, Room 201 B

Session: Ions and Biomolecules at Aqueous Interfaces
Presenter: T.Z. Regier, Canadian Light Source, Canada
Authors: T.Z. Regier, Canadian Light Source, Canada
C. Phillips, University of Saskatchewan, Canada
D. Peak, University of Saskatchewan, Canada
R. Green, University of Saskatchewan, Canada
A. Moewes, University of Saskatchewan, Canada
J. Tse, University of Saskatchewan, Canada
A. Achkar, University of Waterloo, Canada
D. Hawthorn, University of Waterloo, Canada
Correspondent: Click to Email
X-ray absorption spectroscopy is a sensitive probe of transition metal co-ordination and bonding environment. Excitation of 2p electrons into unoccupied 3d orbitals allows for determination of crystal field parameters and ligand field strength. Measurement of the x-ray absorption spectra of Cu and Fe ions in solutions was performed using a continuous flow cell on the SGM beamline at the Canadian Light Source. Fluorescence yields and inverse partial fluorescence yields were measured using a multielement silicon drift detector. The interaction between Cu ions and various organic ligands was studied and the difference between the absorption and fluorescence intensities was examined for aqueous ferrous and ferric solutions.