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., ÖZTÜRK ER E., Kasa N. A., ÇETİN G., KOMESLİ O. T., BAKIRDERE S.

JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY, cilt.35, sa.5, ss.961-966, 2020 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 35 Sayı: 5
  • Basım Tarihi: 2020
  • Doi Numarası: 10.1039/d0ja00025f
  • Dergi Adı: JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Analytical Abstracts, Aqualine, BIOSIS, CAB Abstracts, Chimica, Compendex, Food Science & Technology Abstracts, Veterinary Science Database
  • Sayfa Sayıları: ss.961-966
  • İstanbul Teknik Üniversitesi Adresli: Hayır

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.