XANES and FTIR measurements were performed at
beamline ID21 of the European Synchrotron Radiation
Facility (ESRF), Grenoble, France. XANES spectra were
collected in fluorescence mode on selected points of the
sample with the beam size of 0.2 µm x 0.8 µm. Measurements
were made using X-rays with tuneable energy in the range
from 3.32 to 3.47 keV, with a 0.225 eV energy step and 0.1 s