scholarly journals Real-Time X-ray Absorption Spectroscopy of Uranium, Iron, and Manganese in Contaminated Sediments During Bioreduction

2008 ◽  
Vol 42 (8) ◽  
pp. 2839-2844 ◽  
Author(s):  
Tetsu K. Tokunaga ◽  
Jiamin Wan ◽  
Yongman Kim ◽  
Steve R. Sutton ◽  
Matthew Newville ◽  
...  
Keyword(s):  
Real Time ◽  
Absorption Spectroscopy ◽  
Contaminated Sediments ◽  
X Ray ◽  
X Ray Absorption ◽  
Iron And Manganese

X-ray absorption spectroscopy studies for the determination of adsorption binding modes of selenium oxoanions onto iron and manganese based nanomaterials

2012 ◽  
Vol 1480 ◽  
Author(s):  
Christina M. Gonzalez ◽  
Jason G. Parsons ◽  
Jeffrey Hernandez ◽  
Jorge L. Gardea-Torresdey
Keyword(s):  
Absorption Spectroscopy ◽  
Binding Modes ◽  
Edge Structure ◽  
X Ray ◽  
Microwave Assisted ◽  
Spectroscopy Studies ◽  
X Ray Absorption ◽  
Binding Mechanisms ◽  
Iron And Manganese

ABSTRACTIncreasing concentrations of selenium oxoanions in the environment are placing many animals at risk for reproduction failure and deformities. The understanding of binding mechanisms of selenium oxoanions to iron and manganese based oxide minerals could lead to enhanced understanding of selenium mobility in the environment. In this study, the binding mechanisms of selenium oxoanions, selenite and selenate, to non microwave-assisted and microwave-assisted synthetic Fe3O4, Mn3O4, and MnFe2O4 nanomaterials were investigated through the use of X-ray absorption spectroscopy. The X-ray absorption near-edge structure (XANES) spectroscopy studies revealed the oxidation state of selenite and selenate remains the same after binding occurs to all nanomaterials in pH 2, 4, or 6 environments. The binding modes of selenite and selenate were determined to be bidentate binuclear through use of Extended x-ray absorption fine structure (EXAFS) and were independent of nanomaterials, synthetic technique, and pH.

Towards X-Ray Absorption Spectroscopy in Real Time

ChemPhysChem ◽  
2009 ◽  
Vol 10 (13) ◽  
pp. 2197-2200 ◽  
Author(s):  
Matthias Bauer ◽  
Helmut Bertagnolli
Keyword(s):  
Real Time ◽  
Absorption Spectroscopy ◽  
X Ray ◽  
X Ray Absorption

scholarly journals Examination of Cr(VI) treatment by zero-valent iron using in situ, real-time X-ray absorption spectroscopy and Cr isotope measurements

2014 ◽  
Vol 142 ◽  
pp. 299-313 ◽  
Author(s):  
Julia H. Jamieson-Hanes ◽  
Adam M. Lentz ◽  
Richard T. Amos ◽  
Carol J. Ptacek ◽  
David W. Blowes
Keyword(s):  
Real Time ◽  
Absorption Spectroscopy ◽  
Zero Valent Iron ◽  
X Ray ◽  
X Ray Absorption ◽  
Isotope Measurements

scholarly journals Tracking reaction dynamics in solution by pump–probe X-ray absorption spectroscopy and X-ray liquidography (solution scattering)

2016 ◽  
Vol 52 (19) ◽  
pp. 3734-3749 ◽  
Author(s):  
Jeongho Kim ◽  
Kyung Hwan Kim ◽  
Key Young Oang ◽  
Jae Hyuk Lee ◽  
Kiryong Hong ◽  
...  
Keyword(s):  
Real Time ◽  
Absorption Spectroscopy ◽  
Reaction Dynamics ◽  
Solution Phase ◽  
Pump Probe ◽  
X Ray ◽  
Electronic Dynamics ◽  
Photoinduced Reactions ◽  
X Ray Absorption

TRXL and TRXAS are powerful techniques for real-time probing of structural and electronic dynamics of photoinduced reactions in solution phase.

Sign in / Sign up

Export Citation Format

Share Document