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Rapid magnetic solid phase extraction based on Fe3O4@SiO2/Graphene nanocomposite for the preconcentration of Cadmium and its determination by Flame Atomic Absorption Spectrometry.

Author(s)
Wei Ning Li Hebei Key Laboratory of Bioinorganic Chemistry, College of Sciences, Agricultural University of Hebei, Baoding, China
Hai Tao Zhang Graduate School, Agricultural University of Hebei, Baoding 071001, Hebei Province, PR China
Yan Li Dong Hebei Key Laboratory of Bioinorganic Chemistry, College of Sciences, Agricultural University of Hebei, Baoding, China
Jing Ci Li Hebei Key Laboratory of Bioinorganic Chemistry, College of Sciences, Agricultural University of Hebei, Baoding, China
Jing Jun Ma Hebei Key Laboratory of Bioinorganic Chemistry, College of Sciences, Agricultural University of Hebei, Baoding, China
Abstract
Silica-coated magnetic graphene nanocomposite (designated Fe3O4@SiO2/graphene) was synthesized and applied for preconcentration of Cd in different water samples. The extraction process was achieved in a single step by mixing the chelating agent, adsorbents and water samples via ultrasound-assisted action. The magnetic adsorbents were isolated from sample solution with an adscititious magnet. The eluted metal ions from the adsorbents was analysed by flame atomic absorption spectrometry. The advantages of the new method include short analysis time and simple extraction procedure. Under optimum conditions, the relative standard deviation of 300.0 µg L−1 Cd was 4.54%. A concentration factor of 25.0 and the detection limit of 0.54 µg L−1 for Cd was obtained. Satisfactory recoveries (90.5-98.5%) were achieved in four real environmental water samples.
Publication Details
Page(s) 952-955
DOI DOI not available
Published Journal: Journal of Chemical Society of Pakistan, Volume: 36, Issue: 5, Year: 2014

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