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

Akkaya E., Ozturk E. , Kasa N. A. , ÇETİN G. , KOMESLİ O. T. , BAKIRDERE S.

Journal of Analytical Atomic Spectrometry, vol.35, no.5, pp.961-966, 2020 (Journal Indexed in SCI Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 35 Issue: 5
  • Publication Date: 2020
  • Doi Number: 10.1039/d0ja00025f
  • Title of Journal : Journal of Analytical Atomic Spectrometry
  • Page Numbers: pp.961-966


© 2020 The Royal Society of Chemistry.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.