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Full Record Details
Persistent URL
http://purl.org/net/epubs/work/41573
Record Status
Checked
Record Id
41573
Title
Evidence for dissolved polymeric mercury(II)-sulfur complexes?
Contributors
AMT Bell (Manchester U.)
,
JM Charnock (Manchester U. and CCLRC Daresbury Lab.)
,
GR Helz (Maryland U.)
,
AR Lennie (CCLRC Daresbury Lab.)
,
FR Livens (Manchester U.)
,
JFW Mosselmans (CCLRC Daresbury Lab.)
,
RAD Pattrick (Manchester U.)
,
DJ Vaughan (Manchester U.)
Abstract
We have examined alkaline sulfidic (0.5–0.003 M Na2S), aqueous solutions of Hg(II)-S complexes (4–370 ppm Hg(II)) by Hg LIII edge EXAFS spectroscopy at 296, 348 and 423 K. Data were collected using the ID26 High Brilliance X-ray Spectroscopy beamline at the ESRF. Analysis of these EXAFS spectra shows Hg coordinated by two S atoms at 2.30 Å; multiple scattering analyses reveal a linear [–S–Hg–S–] arrangement in the solution complex. These results are in agreement with earlier results on more concentrated solutions of these complexes. There is also evidence in the data for polynuclear sulfide complexes at 296 K and 348 K for samples with the lowest sulfide concentrations although this is complicated by multiple scattering effects.
Organisation
CCLRC
,
SRS
Keywords
spectroscopic
,
synchrotron radiation
,
complexes
,
Chemistry
,
Natural environment
,
EXAFS
,
sulfide
,
mercury
Funding Information
Related Research Object(s):
Licence Information:
Language
English (EN)
Type
Details
URI(s)
Local file(s)
Year
Journal Article
Chem Geol
243 (2007): 122-127.
doi:10.1016/j.chemgeo.2007.05.013
CHEMGE15162.pdf
2007
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