Journal of Food Composition and Analysis, cilt.147, 2025 (SCI-Expanded)
This study presents an analytical method (VA-DµSPE-FAAS) for determining Mo(VI) in various food and water samples using flame atomic absorption spectrometry after separation via vortex-assisted dispersive solid-phase microextraction. A polypropylene imidazole amphiphilic derivative was synthesized and employed as an effective adsorbent for Mo(VI) extraction. Optimization of experimental variables—including pH, adsorbent mass, adsorption time, desorption solvent type and volume, and elution time—was performed using both a univariate approach and a Box-Behnken Design-based chemometric study. Under optimized conditions, the method demonstrated a wide linear range (0.3–280 µg kg⁻¹), high extraction recoveries (93.3 %–96.1 %), a substantial enrichment factor (103), and a low limit of detection (0.1 µg kg⁻¹). The method showed strong matrix tolerance and was successfully applied to certified reference materials (NIST-1568a Rice Flour and GBW 07605 Tea), yielding recovery values within acceptable ranges (91.8 %–97.4 %), thereby confirming the accuracy and applicability of the procedure for real sample analysis.