Issue 7, 2018

A colorimetric-dispersive solid-phase extraction method for the sensitive and selective determination of iron using dissolvable bathocuproinedisulfonic acid-intercalated layered double hydroxide nanosheets

Abstract

In this research, a novel, simple, sensitive and selective method has been presented for the determination of iron using dissolvable bathocuproine disulfonic acid (BCS)-layered double hydroxides (LDHs) for dispersive solid-phase extraction (DSPE). Bathocuproine disulfonic acid (BCS)-intercalated MgAl-LDH nanosheets were successfully synthesized by a co-precipitation method. This was followed by an anion-exchange treatment. The extraction and colorimetric detection were based on the selective interaction of BCS-intercalated MgAl-LDH nanosheets with iron(II) and its color change. The color of BCS–iron(II)–MgAl-LDH could be easily observed with the naked eye, as it dissolved in acid to release the colored complex of iron(II), which was then directly introduced into a UV-vis spectrophotometer for analysis. The key parameters of the extraction were examined and optimized via a colorimetric method. Under the optimum conditions, a linear range of 0.5–100 μg L−1 was obtained with a good correlation coefficient of r2 = 0.9972 and a limit of detection of 0.4 μg L−1. The inter-day and intra-day relative standard deviations (RSDs) for six replicate determinations after the extraction of 50 μg L−1 were 2.9% and 4.1% respectively. The successful application of the proposed method was shown for the determination of iron in beverage and water samples.

Graphical abstract: A colorimetric-dispersive solid-phase extraction method for the sensitive and selective determination of iron using dissolvable bathocuproinedisulfonic acid-intercalated layered double hydroxide nanosheets

Article information

Article type
Paper
Submitted
06 Nov 2017
Accepted
27 Feb 2018
First published
01 Mar 2018

New J. Chem., 2018,42, 5489-5498

A colorimetric-dispersive solid-phase extraction method for the sensitive and selective determination of iron using dissolvable bathocuproinedisulfonic acid-intercalated layered double hydroxide nanosheets

Y. Hamid and M. R. Fat’hi, New J. Chem., 2018, 42, 5489 DOI: 10.1039/C7NJ04282E

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements