scholarly journals Analyses of Ferrous and Ferric State in DynabiTabUsing Mössbauer Spectroscopy

2017 ◽  
Vol 2017 ◽  
pp. 1-4 ◽  
Author(s):  
Young Rang Uhm ◽  
Jae Cheong Lim ◽  
Sang Mu Choi
Keyword(s):  
Mössbauer Spectroscopy ◽  
Room Temperature ◽  
Single Phase ◽  
Mossbauer Spectroscopy ◽  
Ferrous Gluconate ◽  
Mößbauer Spectroscopy ◽  
Ferrous Fumarate ◽  
Temperature Spectra ◽  
Two Phases ◽  
Iron Bearing

Antianemic medicament ferrous gluconate, ferrous fumarate, and a Dynabi tablet with a basic iron bearing ingredient were studied with the use of Mössbauer spectroscopy. Room temperature spectra of ferrous gluconate gave clear evidence that the two phases of iron were present: ferrous (Fe2+) as a major one with a contribution at and above 91 a.u.% and ferric (Fe3+) whose contribution was found to be ~9 a.u.%. In the case of ferrous fumarate, a single phase was measured corresponding to ferrous (Fe2+) state. A Dynabi tablet consists of ferrous fumarate and ferrous fumarate. The ferric phase in ferrous gluconate is able to be reached about ~3.6 a.u.% in a tablet.

Intramolecular rotations and electronic states of iron in the iron bis(dicarbollide) complex Fe[(C2B9H11)2] studied by a 57Fe nuclear probe and computational methods

2021 ◽  
Author(s):  
Katarzyna Bednarska-Szczepaniak ◽  
Katarzyna Dziedzic-Kocurek ◽  
Ewelina Przelazły ◽  
Jan Stanek ◽  
Zbigniew Jan Lesnikowski
Keyword(s):  
Mössbauer Spectroscopy ◽  
Computational Methods ◽  
Room Temperature ◽  
Mossbauer Spectroscopy ◽  
Electronic States ◽  
Mößbauer Spectroscopy

Mössbauer spectroscopy of iron(III)bis(dicarbollide) (1) and its adduct (2) revealed low spin FeIII in 1 and supprasingly FeII in 2. In 1 the (C2B9H11) rotate at room temperature with 107...

MÖssbauer Study of a Tinife Shape Memory Alloy.

1991 ◽  
Vol 246 ◽  
Author(s):  
M. Jimenez ◽  
V. Marquina ◽  
S. Aburto ◽  
M.L. Marquina ◽  
R. Gomez ◽  
...  
Keyword(s):  
Mössbauer Spectroscopy ◽  
Shape Memory ◽  
Room Temperature ◽  
Mossbauer Spectroscopy ◽  
Density Wave ◽  
Quadrupole Doublet ◽  
Mössbauer Study ◽  
Scanning Calorimetry ◽  
Mößbauer Spectroscopy ◽  
Wave Induced

AbstractMÖssbauer spectroscopy is very sensitive to structural transitions that may occur during a phase change of the type known to arise in the shape memory TiNiFe alloy. In this work we present the results of resistance vs temperature, differential scanning calorimetry (DSC) and Mössbauer spectroscopy (MS) measurements in Ti50Ni47Fe3 sample. The resistance vs temperature curve shows the usual sharp increase associated to the B2 → R transition at Tp = 245 K and then raises until a maximum is attained at ∼ 150 K. The DSC curve shows a peak maximum at the same temperature where the resistivity starts to increase. The room temperature Mössbauer spectrum consists of a single line, indicating that the iron atoms have cubic surroundings. As temperature is lowered, a small asymmetric quadrupole doublet begins to develop. The isomer shift (I.S.) and quadrupole splitting (ΔQ) values of this doublet increase with decreasing temperature until almost constant values are achieved at temperatures ∼ 100 K. We relate the changes in the Mössbauer spectra with previously proposed charge density wave induced premartensitic transition.

scholarly journals Identification of iron-bearing minerals in basalts and pillow lavas of the Kaczawa Mountains using 57Fe Mössbauer spectroscopy

Nukleonika ◽  
2017 ◽  
Vol 62 (2) ◽  
pp. 145-148
Author(s):  
Dariusz Malczewski ◽  
Martyna Jeleń ◽  
Jerzy Żaba ◽  
Artur Błachowski ◽  
Krzysztof Ruebenbauer ◽  
...  
Keyword(s):  
Mössbauer Spectroscopy ◽  
Mossbauer Spectroscopy ◽  
57Fe Mössbauer Spectroscopy ◽  
Preliminary Results ◽  
57Fe Mossbauer Spectroscopy ◽  
Mößbauer Spectroscopy ◽  
Pillow Lavas ◽  
Geological Unit ◽  
Sw Poland ◽  
Iron Bearing

Abstract The Kaczawa Mountains along with the Kaczawa foothill comprise a complicated geological unit that is called the Kaczawa metamorphic (Sudetes, SW Poland). The aim of our work was to identify the iron-bearing minerals in samples of basalts and pillow lavas from the Kaczawa metamorphic using 57Fe Mössbauer spectroscopy. Based on the preliminary results, the Fe3+/Fe2+ ratio in the samples was determined.

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