Journal
FOOD ANALYTICAL METHODS
Volume 7, Issue 3, Pages 669-675Publisher
SPRINGER
DOI: 10.1007/s12161-013-9671-z
Keywords
Modified graphene nano-sheet; Cd(II) determination; Solid-phase extraction; FAAS; Sea food
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In this work, graphene nano-sheets was modified by dipyridyl amine group and used as a novel sorbent for selective separation and preconcentration of cadmium ions. The sorbent was characterized by infrared spectroscopy, transmission electron microscopy, thermal analysis, and elemental analysis. The application of this sorbent was investigated in determination of cadmium ions in sea food samples by flame atomic absorption spectrometry. The effective parameters on adsorption and desorption of cadmium were optimized. The limit of detection, the relative standard deviation and the recovery of the established method were found to be 0.19 ng mL(-1), 1.6 %, and 99.1 %, respectively. The method was validated using various standard reference materials and was applied for cadmium determination in sea food sample.
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