Mössbauer and thermogravimetric study of ferrous gluconate

Kulgawczuk, D.; Ruebenbauer, K.; Sepioł, B.

doi:10.1007/bf02046607

Cited by 17 publications

(16 citation statements)

References 6 publications

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“…It can be seen that the former has a shoulder on its left side a feature that indicates a presence of the Fe 2+ ions experiencing a slightly weaker crystal field. The existence of such ions was also reported previously [6][7][8]10]. It should be also noticed that the width of the peak representing the minor iron phase is larger than the one associated with the major phase.…”

Section: Methodssupporting

confidence: 83%

“…For Ferrum Lek, a commercially available iron-polymaltose complex, in which Fe-bearing ions are ferric, the value of D(CS)=502(24) K was found [12] comparing well with the values expected for the ferric iron [11]. 8 …”

Section: Temperature Dependence Of Center Shiftmentioning

confidence: 56%

“…For the inorganic compounds mentioned above the overestimation may be as high as 15% for structurally related compounds [11]. This uncertainty is as high as the amount of the ferric phase in the Fe-gluconate as determined by the Mӧssbauer spectroscopy [6][7][8][9][10]. The issue of the minor ferric phase is further complicated by the fact that the structure of the Fe-gluconate is not precisely known.…”

Section: Introductionmentioning

confidence: 99%

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Dynamics of Fe atoms in Fe-gluconate as seen by Mössbauer spectroscopy

Dubiel¹,

Cieślak²

2016

J. Phys. D: Appl. Phys.

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Fe-gluconate was studied by means of the Mössbauer spectroscopy in the temperature interval of 80-305K. The measured spectra were analyzed in terms of two subspectra and, alternatively, two distributions of the quadrupole splitting. The major component (85%) was identified as due to high-spin Fe 2+ ions while the identification of the minor component (15%) was not unique: some characteristics are in favour of the high-spin Fe 3+ state while other ones are consistent with the low-spin Fe 2+ state.Values of the Debye temperature were determined for both phases from a temperature dependence of the center shift as well as from that of the spectral area. The force constant for the high-spin ferrous atoms was evaluated to be equal to 44 N/m (243 cm -1 ).

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Section: Methodssupporting

confidence: 83%

Section: Temperature Dependence Of Center Shiftmentioning

confidence: 56%

Section: Introductionmentioning

confidence: 99%

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Dynamics of Fe atoms in Fe-gluconate as seen by Mössbauer spectroscopy

Dubiel¹,

Cieślak²

2016

J. Phys. D: Appl. Phys.

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“…The parameters of the two of them (Table) ions. These ions are probably an integral part of the ferrous gluconate structure [6,7].…”

Section: +mentioning

confidence: 99%

⁵⁷Fe Hyperfine Parameters in Vitamins and Dietary Supplements

Kądziołka-Gaweł

Michałowska

2015

Acta Phys. Pol. A

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Mössbauer (nuclear gamma-resonance) spectroscopy was used to study various industrial samples of vitamins and dietary supplements containing iron ions, which are used in the anemia treatment. Determination of the iron state (Fe 2+ or Fe 3+ ) in medicaments is important for the pharmaceuticals evaluation quality. The investigated samples contain ferrous fumarate, ferrous gluconiate and ferric diphosphate. 57Fe hyperne parameters of the studied pharmaceuticals indicate that there exist major iron ferrous and ferric compounds. However, Mossbauer spectra of the investigated samples demonstrated the presence of additional ferrous and ferric components, probably related to impurities or to a partially modied main component.

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“…According to the producer, the medicament should be stored in a dry and dark place at temperature between 15 o C and 25 o C, and not taken after the expiration date which occurs 2 years after the fabrication date. The ferrous gluconate itself was studied with the Mössbauer Spectroscopy (MS) in the past [1][2][3]. Authors of Refs.…”

Section: Introductionmentioning

confidence: 99%

Effect of time and storing conditions on iron forms in ferrous gluconate and Ascofer®

Dubiel

Cieślak

Gozdyra

2011

Journal of Molecular Structure

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Antianemic medicament Ascofer ® and ferrous gluconate, its basic iron bearing ingredient, were studied with the use of Mössbauer spectroscopy. Room temperature spectra gave a clear evidence that two phases of iron were present viz. ferrous (Fe 2+ ) as a major one with a contribution of ~85 ±5 %, and ferric (Fe 3+ ) whose contribution was found to be ∼15±5 %. However, the actual values of the contributions of the two kind of the iron ions in Ascofer ® depend on sample's age: the abundance of Fe 2+ ions increases with time by ∼10% after 51 months, while that of Fe 3+ decreases by the same amount. This means that an internal reduction of Fe 3+ ions takes place. Ferrous ions were shown to occupy at least two different sites. In Ascofer ® , the relative abundance of the two sites does not depend on the age of sample, while in the gluconate the population of site 1 increases and that of site 2 decreases with the age of the sample.

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Mössbauer and thermogravimetric study of ferrous gluconate

Cited by 17 publications

References 6 publications

Dynamics of Fe atoms in Fe-gluconate as seen by Mössbauer spectroscopy

Dynamics of Fe atoms in Fe-gluconate as seen by Mössbauer spectroscopy

⁵⁷Fe Hyperfine Parameters in Vitamins and Dietary Supplements

Effect of time and storing conditions on iron forms in ferrous gluconate and Ascofer®

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Mössbauer and thermogravimetric study of ferrous gluconate

Cited by 17 publications

References 6 publications

Dynamics of Fe atoms in Fe-gluconate as seen by Mössbauer spectroscopy

Dynamics of Fe atoms in Fe-gluconate as seen by Mössbauer spectroscopy

57Fe Hyperfine Parameters in Vitamins and Dietary Supplements

Effect of time and storing conditions on iron forms in ferrous gluconate and Ascofer®

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⁵⁷Fe Hyperfine Parameters in Vitamins and Dietary Supplements