CoNiFe-LDH nanoflowers combined with bismuth-based layered perovskite oxide (Bi₂MoO₆) for vortex-assisted micro-solid phase extraction of lead from food and water samples

SOYLAK M., Oguz F., Ahmed H. E. H.

Food Chemistry, cilt.491, 2025 (SCI-Expanded, Scopus) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 491
  • Basım Tarihi: 2025
  • Doi Numarası: 10.1016/j.foodchem.2025.145177
  • Dergi Adı: Food Chemistry
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, PASCAL, Aerospace Database, Aquatic Science & Fisheries Abstracts (ASFA), BIOSIS, CAB Abstracts, Chemical Abstracts Core, Chimica, Communication Abstracts, Compendex, EMBASE, Food Science & Technology Abstracts, Metadex, Veterinary Science Database, Civil Engineering Abstracts
  • Anahtar Kelimeler: CoNiFe-LDH nanoflowers/Bi₂MoO₆, Food, GAPI, Pb(II), Preconcentration, VA-μSPE, Water analysis
  • Erciyes Üniversitesi Adresli: Evet

Özet

A new CoNiFe-LDH NFs/Bi₂MoO₆ nanocomposite was synthesized, characterized, and utilized to separate and enrich Pb(II) using vortex-assisted micro-solid phase extraction (SPE). The nanocomposite's high surface area and pH-dependent charge (PZC ≈ 6) enabled superior adsorption via electrostatic interactions, achieving >98 % recovery at pH 8. A preconcentration factor of 20 was obtained by optimizing the analytical parameters: 5 mg adsorbent, 20 mL sample volume, and 1 mL of 2 mol L−1 HNO₃ eluent. The VA-μSPE method showed high accuracy for intra-day and inter-day RSDs (7.8 % and 10.2 %, respectively) and low LODs (0.12–0.20 μg kg−1). Accuracy was validated using two SRMs with recoveries of 95–99 % and statistical agreement. Low environmental impact was obtained by sustainability evaluations using GAPI and WAC, which put a priority on energy efficiency and decreased reagent consumption. This study offers a green, sensitive, and accurate method for Pb(II) analysis in food and water samples.