Issue 28, 2025, Issue in Progress

Alginate integrated sodium ferrite nanocomposite-based dispersive solid-phase extraction for trace detection of metal ions in water and juices

Abstract

In this work sodium ferrite nanoparticles (Na2Fe4O7-NPs) were synthesized through a sol–gel green synthesis process using an aqueous extract of tamarind fruit and then combined with sodium alginate to synthesize composite AG/Na2Fe4O7-NC. The synthesized nanoparticles and the composite were characterized by advanced analytical techniques to study crystalline behaviour, morphology, surface charge, and size distribution. AG/Na2Fe4O7-NC was employed to develop a novel dispersive solid-phase extraction (DSPE) method for the simultaneous detection of heavy metals (HMs), including Cd, Co, Cu, Mn, Ni, and Pb, by flame atomic absorption spectrometry. Various experimental factors, including pH, nanocomposite dose, sample volume, eluent composition, eluent concentration, and eluent volume, were examined to maximize efficiency. The developed AG/Na2Fe4O7-NC based DSPE method showed limits of detection (LODs) of 0.6, 0.2, 4.9, 1.0, 6.0, and 0.1 ng L−1 for Cd, Co, Cu, Mn, Ni, and Pb, respectively, with a preconcentration factor of 250. The accuracy of the method was validated using certified reference material (CRM), yielding excellent recovery rates between 97.1% and 98.7%. This developed method was successfully applied to measure HMs in tap water and fruit juice samples. The AG/Na2Fe4O7-NC enhance the adsorption efficiency of the developed DSPE method and makes it a powerful tool for analyzing trace metals in environmental and food safety applications.

Graphical abstract: Alginate integrated sodium ferrite nanocomposite-based dispersive solid-phase extraction for trace detection of metal ions in water and juices

Article information

Article type
Paper
Submitted
19 Mar 2025
Accepted
24 Jun 2025
First published
01 Jul 2025
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2025,15, 22534-22545

Alginate integrated sodium ferrite nanocomposite-based dispersive solid-phase extraction for trace detection of metal ions in water and juices

S. Perveen, A. Hol, J. A. Baig, S. T. Hussain Sherazi, S. Memon, T. G. Kazi, M. Kazi, K. H. Thebo and K. Akhtar, RSC Adv., 2025, 15, 22534 DOI: 10.1039/D5RA01948F

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