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Speciation and Long- and Short-term Molecular-level Dynamics of Soil Organic Sulfur Studied by X-ray Absorption Near-Edge Structure Spectroscopy.
- Source :
- Journal of Environmental Quality; May/Jun2011, Vol. 40 Issue 3, p704-718, 15p
- Publication Year :
- 2011
-
Abstract
- The article presents a study on the investigation of speciation, oxidative state changes and long- and short-term molecular-level dynamics of organic sulfur (S) by using X-ray absorption near-edge structure (XANES) spectroscopy in the U.S. It notes the collection of soil samples from the upper 15 centimeters (cm) of undisturbed grasslands since 1931 and from cultivated fields since 1880 in the western part of the country. It demonstrates that synchrotron-based X-ray spectroscopic technique is an ideal nondestructive tool to identify the various oxidation states of S. It cites the three distinct groups of organosulfur compounds in the grassland-derived soils which include strongly reduced organic S, organic S in intermediate oxidation states, and strongly oxidized organic S.
Details
- Language :
- English
- ISSN :
- 00472425
- Volume :
- 40
- Issue :
- 3
- Database :
- Supplemental Index
- Journal :
- Journal of Environmental Quality
- Publication Type :
- Academic Journal
- Accession number :
- 60761815
- Full Text :
- https://doi.org/10.2134/jeq2010.0061