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Hydride generation-flame atomic absorption spectrometric quantification of trace lead after the extraction by fatty acid functionalized Fe3O4 nanoparticles assisted dispersive solid-phase extraction: a sensitive, precise and accurate analytical method

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Abstract

This study presents a dispersive solid-phase extraction (DSPE) method based on fatty acid (stearic acid) functionalized magnetite nanoparticles (SACMNP) for the extraction and preconcentration of ultra-trace lead from aqueous samples for sensitive determination by a hydride generation-flame atomic absorption spectrometry (HG-FAAS) system. To achieve that, magnetite nanoparticles (MNPs) were synthesized and coated with stearic acid in order to obtain a higher surface area and increased selectivity. The optimum values obtained from the combination of HG-FAAS and SACMNP-DSPE were determined through the one-variable-at-a-time optimization technique. The following results were calculated under the optimum conditions; a limit of detection (LOD) value of 0.16 μg L−1 and a limit of quantification (LOQ) value of 0.52 μg L−1. Standard and certified reference materials (SRM and CRM) were used to verify the developed method's accuracy and the results obtained (SRM: 99.6 ± 5.8%, CRM: 101.8 ± 4.9%) indicated high quantification accuracy.

Graphical abstract: Hydride generation-flame atomic absorption spectrometric quantification of trace lead after the extraction by fatty acid functionalized Fe3O4 nanoparticles assisted dispersive solid-phase extraction: a sensitive, precise and accurate analytical method

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Article information


Submitted
28 Jan 2020
Accepted
17 Mar 2020
First published
17 Mar 2020

J. Anal. At. Spectrom., 2020, Advance Article
Article type
Paper

Hydride generation-flame atomic absorption spectrometric quantification of trace lead after the extraction by fatty acid functionalized Fe3O4 nanoparticles assisted dispersive solid-phase extraction: a sensitive, precise and accurate analytical method

E. Akkaya, E. Ö. Er, N. A. Kasa, G. Çetin, O. T. Komesli and S. Bakirdere, J. Anal. At. Spectrom., 2020, Advance Article , DOI: 10.1039/D0JA00025F

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