Akademik Veri Yönetim Sistemi
Journal of Food Composition and Analysis, cilt.142, 2025 (SCI-Expanded, Scopus)
This research study introduces an innovative, eco-friendly method for synthesizing a trimetallic metal-organic framework (CoNiFe-MOF) utilizing octylamine-succinic acid deep eutectic solvent (DES) as sustainable solvent media. The CoNiFe-MOF was produced by a one-step hydrothermal method utilizing succinic acid and octylamine-based DES (Oct-Sus@DES), yielding nanoflakes with a substantial surface area and superior adsorption characteristics. The synthesized adsorbent was characterized using XRD, FT-IR, SEM-EDX, and BET analysis, which confirmed its crystalline structure and high porosity. The CoNiFe-MOF was effectively utilized for the micro solid phase extraction (µ-SPE) of Pb(II) from water and brewed tea samples, exhibiting high extraction efficiency under optimum circumstances. The extraction process was adjusted by examining critical parameters like pH (6.0), adsorbent dosage (5.0 mg), adsorption time (10 s), and desorption time (2.0 min) as well as type (HNO3), volume (2.0 mL), and concentration of eluent (0.5 M), resulting in maximum extraction recovery of Pb(II). Under ideal conditions, the method exhibited a linear calibration range of 0.02–1.0 mg L−1, with determination coefficients (R2) of 0.9986. The limit of detection (LOD) was 0.0085 mg L−1, with relative standard deviations (RSDs) of ≤ 4.4 % for intra-day precision, and ≤ 5.6 % for inter-day precision. The approach attained a preconcentration factor (PF) of 25.0, enrichment factor (EF) of 23.6, and extraction recovery (ER%) of 94.3 %. Furthermore, the proposed technique demonstrated considerable environmental sustainability, as validated by AGREEprep and ComplexMoGAPI tools.