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Reference type: Journal
Authors: Behbahani M, Hassanlou PG, Amini MM, Moazami HR, Abandansari HS, Bagheri A, Zadeh SH
Article Title: Selective Solid-Phase Extraction and Trace Monitoring of Lead Ions in Food and Water Samples Using New Lead-Imprinted Polymer Nanoparticles.
Publication date: 2015
Journal: Food Analytical Methods
Volume: 8
Issue: (3)
Page numbers: 558-568.
DOI: 10.1007/s12161-014-9924-5

Abstract: A solid-phase extraction method using Pb2+ ion-imprinted polymer (Pb2+-IIP) nanoparticles combined with flame atomic absorption spectrophotometry (FAAS) was developed for the preconcentration and trace monitoring of lead ions in environmental samples. The Pb2+-IIP nanoparticles were obtained by precipitation polymerization of 4-vinylpyridine (the functional monomer), ethylene glycol dimethacrylate (the cross-linker), 2,2GǦ-azobisisobutyronitrile (the initiator), 4-(2-pyridylazo) resorcinol (the lead-binding ligand), and lead ions (the template ion) in acetonitrile solution. The Pb2+-IIP nanoparticles were characterized by Fourier transformed infrared spectroscopy (FTIR), X-ray diffraction (XRD), thermogravimetric and differential thermal analysis (TGA/DTA), and by scanning electron microscopy (SEM). Different affecting parameters on the adsorption and desorption of this solid-phase extraction process were evaluated and optimized. Under the optimized conditions, the detection limit for the proposed method was found to be 0.9 μg L-1, while the relative standard deviation (RSD) for five replicate measurements was calculated to be <4 %. For proving that the proposed method is reliable, a range of food and water samples with different and complex matrices was used
Template and target information: lead ion, Pb(II)
Author keywords: lead ions, Ion-imprinted polymer, nanoparticles, Flame atomic absorption spectrophotometry, Food and water samples


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