期刊
TALANTA
卷 97, 期 -, 页码 87-95出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.talanta.2012.03.066
关键词
Preconcentration; Atomic absorption spectrometric determination; Solid phase extraction; Magnetic nanoparticles
资金
- Research Council of Science and Research Branch, Islamic Azad University
A versatile and robust solid phase with both magnetic property and a very high adsorption capacity is presented on the basis of modification of iron oxide-silica magnetic particles with a newly synthesized Schiff base (Fe3O4/SiO2/L). The structure of the resulting product was confirmed by Fourier transform infrared (FT-IR) spectra, X-ray diffraction (XRD) spectrometry and transmission electron microscopy (TEM). We developed an efficient and cost-effective method for the preconcentration of trace amounts of Pb(II), Cd(II) and Cu(II) in environmental and biological samples using this novel magnetic solid phase. Prepared magnetic solid phase is an ideal support because it has a large surface area, good selectivity and can be easily retrieved from large volumes of aqueous solutions. The possible parameters affecting the enrichment were optimized. Under the optimal conditions, the method detection limit was 0.14, 0.19 and 0.12 mu g L-1 for Pb(II), Cd(II) and Cu(II) ions, respectively. The established method has been successfully applied to analyze real samples, and satisfactory results were obtained. All these indicated that this magnetic phase had a great potential in environmental and biological fields. (C) 2012 Elsevier B.V. All rights reserved.
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