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, cilt.35, no.1, ss.961-966, 2020 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 35 Konu: 5
  • Basım Tarihi: 2020
  • Doi Numarası: 10.1039/d0ja00025f
  • Dergi Adı: JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
  • Sayfa Sayıları: ss.961-966

Özet

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 mu g L-1 and a limit of quantification (LOQ) value of 0.52 mu g 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.