Akademik Veri Yönetim Sistemi
Water, Air, and Soil Pollution, cilt.237, sa.5, 2026 (SCI-Expanded, Scopus)
A new magnetic dispersive micro-solid-phase extraction method was developed for the detection of Pb(II) ions, using hierarchical nanocomposite (mMWCNTs@CoNiFe-LDH). This adsorbent synergistically combines magnetic multi-walled carbon nanotubes with flower-like CoNiFe-layered double hydroxide (LDH), providing rapid extraction within 3 min and simple magnetic separation. The extensive characterization validated its porous core–shell design, elevated surface functioning, and thermal stability. Under optimal conditions, this method demonstrated good sensitivity (LOD: 0.142 µg L⁻1, LOQ: 0.431 µg L⁻1), and precision (RSD ≤ 4.2%). The nanocomposite exhibited high reusability and selectivity in the presence of significant concentrations of interfering ions. The approach, validated with certified reference materials (90–94% recovery) and used for several matrices (water, food and tobacco), indicated worrisome Pb concentrations in curry powder (22.1 µg kg⁻1) and tobacco (71.8 µg kg⁻1). Evaluations of greenness confirmed environmental sustainability. This method provides a fast and dependable option for analyzing Pb(II) in food and water samples.