Fe 3 O 4 @MCM-41-(SO 3 − )[ZrO 2 ] Magnetic Mesoporous Nanocomposite: Dispersive Solid-Liquid Micro Extraction of Pb 2+ Ions

摘要: In the present study, Fe3O4@MCM-41-(SO3−)[ZrO2] magnetic nano-particles (MNPs) as a new, effective and selective solid phase is reported for preconcentration of lead ions by using dispersive solid-liquid micro extraction (DSLME) rapid method. The Fe3O4@MCM-41 nanocomposite with charged sulfonate groups can be synthesized formation sulfonic functionalized organic-inorganic MCM-41 mesoporous structure on surface magnetite nanoparticles. encapsulated ZrO2 nanoparticles into network Fe3O4@MCM-41─SO3H MNPs fabricated covalently bound implanted (-SO3−). morphology prepared sorbent were characterized FT-IR, XRD, VSM, BET TEM techniques in order to show that they comprised both silica structures incorporated was utilized prior determination atomic absorption spectrophotometry. calibration graph obtained under optimized conditions linear dynamic range 1.0–300 μg L−1 correlation coefficient (r2) 0.998. detection limits this method 0.03 ng mL−1. results showed that, successfully applied ionsin different samples water.