| Main Title |
Spectroscopic Study of Surface Redox Reactions With Manganese Oxides. |
| Author |
Risser, J. A. ;
Bailey., G. W. ;
|
| CORP Author |
Environmental Research Lab., Athens, GA. |
| Publisher |
c1992 |
| Year Published |
1992 |
| Report Number |
EPA/600/J-92/157; |
| Stock Number |
PB92-179837 |
| Additional Subjects |
Surface chemistry ;
Oxidation reduction reactions ;
Environmental surveys ;
Manganese oxides ;
Spectrum analysis ;
Natural emissions ;
Organic matter ;
Minerals ;
Soil surveys ;
Chemical spills ;
Visible spectroscopy ;
Solid wastes ;
Chemical reactions ;
Path of pollutants ;
Sediments ;
Ultraviolet spectroscopy ;
Reprints ;
Chemical reaction mechanisms
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB92-179837 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
10p |
| Abstract |
Redox reactions involving soil minerals and materials are important processes in environmental chemistry, but unfortunately they only have been characterized in the solution phase. The lack of a suitable method has prevented investigations of the mineral surface component of redox reactions. The authors present a model system which ultraviolet-visible spectroscopy is employed to observe a surface redox reaction. A synthetic MnOx is reacted with Cr(III), resulting in Cr oxidation to the hexavalent state and the reduction of the MnOx mineral. A scattered transmission accessory allowed the authors to observe spectroscopically both the appearance of Cr(VI) and the attenuation of MnOx in a suspension. Loss of absorbance intensity by MnOx suspensions may be useful as a general method to follow redox reactions as a function of the solid phase rather than relative to a specific reactant. This spectroscopic approach provides the capability to monitor in situ reactions of solid-phase components and is useful for examining transformations of metallic and organic wastes and naturally occurring materials in the environment. |
| Supplementary Notes |
Pub. in Soil Science Society America Jnl., v56 n1 p82-88 Jan-Feb 92. |
| NTIS Title Notes |
Journal article. |
| Title Annotations |
Reprint: Spectroscopic Study of Surface Redox Reactions With Manganese Oxides. |
| Category Codes |
68; 48E; 48F; 99F |
| NTIS Prices |
PC A02/MF A01 |
| Primary Description |
600/01 |
| Document Type |
NT |
| Cataloging Source |
NTIS/MT |
| Control Number |
217730775 |
| Origin |
NTIS |
| Type |
CAT |
