Origin and occurrence of selenium in some Australian coals

The analyses are reported of six Australian coals for mineral type and content, B, Se speciation (by selective leaching) and S speciation (by selective leaching and XANES) together with XANES data for Se in one coal (from a marine sequence). The results of these analyses and of thermodynamic calcula...

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Bibliographic Details
Published in:International journal of coal geology 2007-10, Vol.72 (2), p.72-80
Main Authors: Riley, K.W., French, D.H., Lambropoulos, N.A., Farrell, O.P., Wood, R.A., Huggins, F.E.
Format: Article
Language:English
Subjects:
Coal
Earth sciences
Earth, ocean, space
Exact sciences and technology
Geochemistry
Sedimentary rocks
Selenium
Selenoprotein
Soil and rock geochemistry
Speciation
Sulfur
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Summary:The analyses are reported of six Australian coals for mineral type and content, B, Se speciation (by selective leaching) and S speciation (by selective leaching and XANES) together with XANES data for Se in one coal (from a marine sequence). The results of these analyses and of thermodynamic calculations of thiophenes and Se analogues are used to suggest that selenoprotein structures in coal's precursors (bacteria and algae and possibly higher plants) make Se bonding in coal unique from that of the other trace elements.
ISSN:0166-5162
1872-7840
DOI:10.1016/j.coal.2006.12.010