TY - JOUR
T1 - Iron speciation in natural hyperacid water investigated by Mossbauer spectroscopy
AU - Koch, C. Bender
AU - Rasmussen, Helge Kildahl
AU - Mørup, Steen
PY - 2009
Y1 - 2009
N2 - We have demonstrated the usefulness of the archetypical solid state-technique of Mössbauer spectroscopy to non-invasive studies of the redox and coordination chemistry of iron in a natural hyperacid solution from Iron Mountain, CA. Suitable fast cooling conditions were used to prepare a glass from the natural solution. Measurements of spectra at low temperatures (6 and 15 K) and in large external magnetic fields (6 T) of the glassy, frozen solution revealed a behaviour characteristic of slow paramagnetic relaxation of ferric ions. Analyses of the spectral components are in good agreement with dominance of hexaaquairon(III) ions.
AB - We have demonstrated the usefulness of the archetypical solid state-technique of Mössbauer spectroscopy to non-invasive studies of the redox and coordination chemistry of iron in a natural hyperacid solution from Iron Mountain, CA. Suitable fast cooling conditions were used to prepare a glass from the natural solution. Measurements of spectra at low temperatures (6 and 15 K) and in large external magnetic fields (6 T) of the glassy, frozen solution revealed a behaviour characteristic of slow paramagnetic relaxation of ferric ions. Analyses of the spectral components are in good agreement with dominance of hexaaquairon(III) ions.
U2 - 10.1016/j.saa.2009.08.038
DO - 10.1016/j.saa.2009.08.038
M3 - Journal article
C2 - 19766531
SN - 1386-1425
VL - 74
SP - 928
EP - 930
JO - Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy
JF - Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy
IS - 4
ER -