Chromatographia (2017) 80:1423–1432 DOI 10.1007/s10337-017-3361-8 ORIGINAL Application of Fe O /RGO Nanocomposite as a Sorbent 3 4 of Pesticides 1,2 3,4 1 Mehdi Tavakoli · Mannan Hajimahmoodi · Farzaneh Shemirani · 5 6,7 Amin Shiralizadeh Dezfuli · Mahnaz Khanavi Received: 19 April 2017 / Revised: 10 July 2017 / Accepted: 17 July 2017 / Published online: 5 August 2017 © Springer-Verlag GmbH Germany 2017 −1 Abstract In the present study, to extract the residue of observed within 15 min at pH 7–8 using 0.4 mg mL of seven pesticides (diazinon, chlorpyrifos, ethion, perme- adsorbent with the sample ionic strength of 0.02 M NaCl. thrine, cypermethrin, fenvalerate RR and fenvalerate SS) Limits of detection and quantification were about 14 and −1 from raisin samples, reduced graphene oxide—Fe O mag- 40 µg kg , respectively, for all of pesticides. The validated 3 4 netic nanocomposite is applied as an adsorbent and then method was successfully applied for the determination of the preconcentrated pesticides were determined by GC– pesticides in raisin samples. MS. The application of high adsorption capacity magnetic graphene oxide sheets in pesticides solid phase extraction, Keywords GC–MS · Solid phase extraction · Graphene provides a fast and easy procedure without filtration or cen - oxide · Magnetic nanoparticles · Pesticides trifugation. The extraction
Chromatographia – Springer Journals
Published: Aug 5, 2017
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