Chromatographia (2017) 80:1411–1422 DOI 10.1007/s10337-017-3364-5 ORIGINAL Graphene Oxide/Polyamide Nanocomposite as a Novel Stir Bar Coating for Sorptive Extraction of Organophosphorous Pesticides in Fruit Juice and Vegetable Samples 1 1 Zahra Ayazi · Raana Jaafarzadeh Received: 18 March 2017 / Revised: 15 July 2017 / Accepted: 18 July 2017 / Published online: 28 July 2017 © Springer-Verlag GmbH Germany 2017 Abstract In this research, a novel nanocomposite based Keywords Gas chromatography · Stir bar sorptive on incorporation of graphene oxide (GO) into polyamide extraction · Polyamide · Graphene oxide · Central (PA) was prepared by solvent blending method and subse- composite design organophosphorous pesticides · Fruits quently it was coated on stir bar substrate through solvent and vegetables exchange method. The morphology and surface character- istic of PA- and GO/PA-coated stir bars were investigated using scanning electron microscopy (SEM). The prepared Introduction GO/PA nanocomposite-based stir bar was applied as an extraction device for stir bar sorptive extraction (SBSE) In recent years, nanocomposites (NCs) as a class of new of organophosphorous pesticides (OPPs) including chlor- materials have received considerable attention. These mate- pyrifos, ethion, and phosalone in fruit juice and vegetable rials are produced by hybridation of two or more com- samples followed by gas chromatography–flame ioniza - ponents with different chemical and
Chromatographia – Springer Journals
Published: Jul 28, 2017
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