Separation and Determination of Fe(III) and Fe(II) in Natural and Waste Waters Using Silica Gel Sequentially Modified with Polyhexamethylene Guanidine and Tiron
Joint Authors
Didukh-Shadrina, Svetlana L.
Losev, Vladimir N.
Borodina, Elena
Maksimov, Nikolay
Trofimchuk, Anatoly
Zaporogets, Olga
Source
Journal of Analytical Methods in Chemistry
Issue
Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2017-10-31
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
Silica gel, sequentially modified with polyhexamethylene guanidine and pyrocatechin-3,5-disulfonic acid (Tiron), was suggested for sorption separation and determination of Fe(III) and Fe(II).
It was found that quantitative extraction of Fe(III) and its separation from Fe(II) were attained at pH 2.5–4.0, while quantitative extraction of Fe(II) was observed at pH 6.0–7.5.
An intensive signal with g=4.27, which is characteristic for Fe(III), appeared in EPR spectra of the sorbents after Fe(II) and Fe(III) sorption.
During interaction between Fe(II) and Tiron, fixed on the sorbent surface, its oxidation up to Fe(III) occurred.
Red-lilac complexes of the composition FeL3 were formed on the sorbent surface during sorption regardless of initial oxidation level of iron.
Diffuse reflectance spectrum of surface complexes exhibited wide band with slightly expressed maxima at 480 and 510 nm.
Procedures for separation and photometric determination of Fe(III) and Fe(II) at the joint presence and total Fe content determination as Fe(II) in waste and natural waters was developed.
The limit of detection for iron was 0.05 μg per 0.100 g of the sorbent.
The calibration graph was linear up to 20.0 μg of Fe per 0.100 g of the sorbent.
The RSD in the determination of more than 0.2 μg of Fe was less than 0.06.
American Psychological Association (APA)
Didukh-Shadrina, Svetlana L.& Losev, Vladimir N.& Borodina, Elena& Maksimov, Nikolay& Trofimchuk, Anatoly& Zaporogets, Olga. 2017. Separation and Determination of Fe(III) and Fe(II) in Natural and Waste Waters Using Silica Gel Sequentially Modified with Polyhexamethylene Guanidine and Tiron. Journal of Analytical Methods in Chemistry،Vol. 2017, no. 2017, pp.1-9.
https://search.emarefa.net/detail/BIM-1170322
Modern Language Association (MLA)
Didukh-Shadrina, Svetlana L.…[et al.]. Separation and Determination of Fe(III) and Fe(II) in Natural and Waste Waters Using Silica Gel Sequentially Modified with Polyhexamethylene Guanidine and Tiron. Journal of Analytical Methods in Chemistry No. 2017 (2017), pp.1-9.
https://search.emarefa.net/detail/BIM-1170322
American Medical Association (AMA)
Didukh-Shadrina, Svetlana L.& Losev, Vladimir N.& Borodina, Elena& Maksimov, Nikolay& Trofimchuk, Anatoly& Zaporogets, Olga. Separation and Determination of Fe(III) and Fe(II) in Natural and Waste Waters Using Silica Gel Sequentially Modified with Polyhexamethylene Guanidine and Tiron. Journal of Analytical Methods in Chemistry. 2017. Vol. 2017, no. 2017, pp.1-9.
https://search.emarefa.net/detail/BIM-1170322
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1170322