Carbon-coated Fe3O4 nanoparticles with surface amido groups for magnetic solid phase extraction of Cr(III), Co(II), Cd(II), Zn(II) and Pb(II) prior to their quantitation by ICP-MS

A magnetic nanosorbent was prepared from Fe 3 O 4 nanoparticles and polyacrylamide using a solvothermal process. Two functions are achieved simultaneously in this process: The first consists in the formation of a carbon layer around the Fe 3 O 4 nanoparticles, and the second one in the functionaliza...

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Bibliographic Details
Published in:Mikrochimica acta (1966) 2017-08, Vol.184 (8), p.2645-2651
Main Authors: Habila, Mohamed A., ALOthman, Zeid A., El-Toni, Ahmed Mohamed, Al-Tamrah, Saad A., Soylak, Mustafa, Labis, Joselito Puzon
Format: Article
Language:English
Subjects:
Adsorbents
Adsorption
Analytical Chemistry
Cadmium
Carbon
Characterization and Evaluation of Materials
Chemistry
Chemistry and Materials Science
Dissolution
Extraction
Gluten
Heavy metals
Iron oxides
Lead
Microengineering
Nanochemistry
Nanoparticles
Nanotechnology
Original Paper
Solids
Surface area
Surface chemistry
Wheat
Zinc
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Summary:A magnetic nanosorbent was prepared from Fe 3 O 4 nanoparticles and polyacrylamide using a solvothermal process. Two functions are achieved simultaneously in this process: The first consists in the formation of a carbon layer around the Fe 3 O 4 nanoparticles, and the second one in the functionalization with an amido group. This combination allows the protection of Fe 3 O 4 nanoparticles from dissolution in acid medium during heavy metal adsorption. The adsorbent was characterized by SEM, TEM, EDS, FTIR, TGA, and in terms of surface area. Results showed the Fe 3 O 4 nanoparticles to be embedded in a sheet of carbon with folded surfaces which is functionalized with amido groups. The nanosorbent was applied to the enrichment of Cr(III), Co(II), Cd(II), Zn(II) and Pb(II) via magnetic solid phase extraction (mag-SPE). The effects of pH value, eluent type and sample volume were optimized. The validation of the procedure was verified by the analysis of a wheat gluten certified reference material (8418). The limits of detection for the above ions range from 1 to 110 ng L −1 . The relative standard deviations are
ISSN:0026-3672
1436-5073
DOI:10.1007/s00604-017-2283-3