Magnetic Solid-Phase Extraction of Lead (II) from Water, Tea, and Linden Leaf Samples Using a Zirconium-Based Metal Organic Framework (Zr-MOF@Fe3O4) Prior to Determination by Flame Atomic Absorption Spectrometry

TÜRKER A., ACAR O.

Food Analytical Methods, vol.18, no.9, pp.2106-2119, 2025 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 18 Issue: 9
  • Publication Date: 2025
  • Doi Number: 10.1007/s12161-025-02849-0
  • Journal Name: Food Analytical Methods
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Agricultural & Environmental Science Database, CAB Abstracts, Compendex, Food Science & Technology Abstracts, INSPEC, Veterinary Science Database
  • Page Numbers: pp.2106-2119
  • Keywords: Atomic absorption spectrometry, Lead, Metal organic framework, Solid-phase extraction, Tea, Water
  • Gazi University Affiliated: Yes

Abstract

Magnetic metal organic framework (Zr-MOF@Fe3O4) was synthesized and applied as a solid-phase extractor to the separation and/or preconcentration of Pb(II) from water, tea, and linden samples prior to its determination by flame atomic absorption spectrometry. Zr-MOF@Fe3O4 were characterized by X-ray diffraction, scanning electron microscope with energy-dispersive X-ray analysis, Fourier transform infrared spectroscopy, and BET methods. The effect of eluent, pH, stirring time, amount of adsorbent, and interfering ions was investigated. Adsorption capacity of Zr-MOF@Fe3O4 and mean recovery of Pb(II) were found as 312.5 mg g−1 and 96 ± 3%, respectively. Detection limit (LOD), quantification limit (LOQ), and linear working range were found as 3.9 µg L−1, 13 µg L−1, and 13–5000 µg L−1, respectively. Precision and accuracy of the method were checked by analyzing standard reference materials and spiked water samples. Both percent relative error and RSD% were less than 4% in the analysis of standard reference materials.