Iron speciation in natural hyperacid water investigated by Mossbauer spectroscopy

C. Bender Koch; Helge Kildahl Rasmussen; Steen Mørup

doi:10.1016/j.saa.2009.08.038

Iron speciation in natural hyperacid water investigated by Mossbauer spectroscopy

C. Bender Koch
, Helge Kildahl Rasmussen
, Steen Mørup

Research output: Contribution to journal › Journal article › Research › peer-review

Abstract

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.

Original language	English
Journal	Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy
Volume	74
Issue number	4
Pages (from-to)	928-930
ISSN	1386-1425
DOIs	https://doi.org/10.1016/j.saa.2009.08.038
Publication status	Published - 2009

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title = "Iron speciation in natural hyperacid water investigated by Mossbauer spectroscopy",

abstract = "We have demonstrated the usefulness of the archetypical solid state-technique of M{\"o}ssbauer 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.",

author = "Koch, \{C. Bender\} and Rasmussen, \{Helge Kildahl\} and Steen M{\o}rup",

year = "2009",

doi = "10.1016/j.saa.2009.08.038",

language = "English",

volume = "74",

pages = "928--930",

journal = "Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy",

issn = "1386-1425",

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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 -

Iron speciation in natural hyperacid water investigated by Mossbauer spectroscopy

Abstract

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