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Title

Polyaniline/Graphene Nanocomposite as a Promising Sorbent for Dispersive Solid Phase Extraction of Avermectins from Citrus Fruit Juice

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 Start Page 21 | End Page 29

Abstract

 A solid phase extraction sorbent based on polyaniline/graphene nanocomposite is presented. The structure and morphology of the synthesized nanocomposite were investigated by Fourier transform infrared spectroscopy, field emission scanning electron microscopy, Xray diffraction and thermal gravimetric analysis. The Dispersive solid phase extraction was employed to the isolation and preconcentration of Avermectins insecticide (mixture of B1a and B1b). The extraction procedure was investigated by High performance liquid chromatography-UV detection. The sorbent demonstrated a favorable analytical performance for Avermectins detection with reasonable linear ranges (1. 5-1000 μ g l-1 and 5. 0-1000 μ g l-1 for B1a and B1b in order) and acceptable detection limits (0. 5 μ g l-1 for B1a and 2. 5 μ g l-1 for B1b) under optimized conditions. The extraction efficiency of polyaniline/graphene nanocomposite in the extraction of Avermectins was compared with graphene, polyaniline, carbon nanotube and C18 sorbents. Moreover, the applicability of proposed method was assessed for the extraction of analyte from Citrus fruit juice.

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