Journal
MICROCHIMICA ACTA
Volume 183, Issue 9, Pages 2639-2647Publisher
SPRINGER WIEN
DOI: 10.1007/s00604-016-1896-2
Keywords
Nanomaterial; Extraction; Thiazolylazoresorcinol; Immobilization; Box-Behnken design; Pareto chart; Scanning electron microscopy; Vibrating sample magnetometry; Food analysis
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Funding
- Tabriz Branch, Islamic Azad University, Iran
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The author describes the preparation of a magnetic metal organic framework of type MOF-199 containing magnetite (Fe3O4) nanoparticles carrying covalently immobilized 4-(thiazolylazo) resorcinol (Fe3O4@TAR). This material is shown to represent a viable sorbent for separation and preconcentration of Cd(II), Pb(II), and Ni(II) ions. Box-Behnken design was applied to optimize the parameters affecting preconcentration. Following elution with 0.6 mol L-1 EDTA, the ions were quantified by FAAS. The capacity of the sorbent ranged between 185 and 210 mg g(-1). The limits of detection are 0.15, 0.40, and 0.8 ng mL(-1) for Cd(II), Ni(II), and Pb(II) ions, respectively. The relative standard deviations are < 8.5 %. The method was successfully applied to the rapid extraction of trace amounts of these ions from sea food and agri food.
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