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Study of Complexes of Tannic Acid with Fe(III) and Fe(II)
Joint Authors
Source
Journal of Analytical Methods in Chemistry
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-6, 6 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-02-03
Country of Publication
Egypt
No. of Pages
6
Main Subjects
Abstract EN
UV-Vis absorption spectra of tannic acid were gained at pH 1.0∼9.0.
Due to the pH value dependence of complex, the stoichiometry of tannic acid with iron ions was tested in buffer solution by the mole ratio method.
The result suggests that the complex ratio of tannic acid to Fe(III) is 1 : 1 and to Fe(II) 3 : 1 in the carbonate buffer solution, and the complex ratio of iron-tannic complexes is 1 : 1 at pH 2.2.
Due to the different color changes of tannic acid with iron ions in the coordination reactions, a tannic acid test paper was designed.
The concentrations of Fe(III) more than 5.000 × 10−6 mol/L and the concentrations of Fe(II) more than 1.000 × 10−5 mol/L in aqueous solution can be detected by this test paper.
American Psychological Association (APA)
Fu, Zhaofeng& Chen, Rui. 2019. Study of Complexes of Tannic Acid with Fe(III) and Fe(II). Journal of Analytical Methods in Chemistry،Vol. 2019, no. 2019, pp.1-6.
https://search.emarefa.net/detail/BIM-1169137
Modern Language Association (MLA)
Fu, Zhaofeng& Chen, Rui. Study of Complexes of Tannic Acid with Fe(III) and Fe(II). Journal of Analytical Methods in Chemistry No. 2019 (2019), pp.1-6.
https://search.emarefa.net/detail/BIM-1169137
American Medical Association (AMA)
Fu, Zhaofeng& Chen, Rui. Study of Complexes of Tannic Acid with Fe(III) and Fe(II). Journal of Analytical Methods in Chemistry. 2019. Vol. 2019, no. 2019, pp.1-6.
https://search.emarefa.net/detail/BIM-1169137
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1169137