title: Preparation and characterization of magnetic allylamine modified graphene oxide-poly(vinyl acetate-co-divinylbenzene) nanocomposite for vortex assisted magnetic solid phase extraction of some metal ions.
abstract: Magnetic allylamine modified graphene oxide-poly(vinyl acetate-co-divinylbenzene) (MGO-DVB-VA) was synthesized and used for magnetic solid phase extraction of Pb(II), Cd(II), Cu(II), Ni(II) and Co(II) prior to their determination by flame atomic absorption spectroscopy. The adsorbent surface functional group was characterized by using FT-IR and Raman spectroscopy. XRD pattern was used to determine the layers of GO. Surface morphology and elemental composition of the adsorbent were evaluated by using SEM and EDX analysis. Various parameters, effecting adsorption efficiency like initial solution pH, adsorbent dose, type and volume of eluent, volume of sample and diverse ions effects were optimized. The preconcentration factor (PF) is 40 for all the metals and the limits of detection for Pb, Cd, Cu, Ni and Co are in the range of 0.37-2.39 µg L(-1) and relative standard deviation below 3.1%. The method was validated by using the method for certified reference materials (Tobacco Leaves (INCT-OBTL-5), Tomato Leaves (1573a), Certified Water (SPS-ww2) and Certified Water (TMDA 64-2)). The method was successfully applied for natural water and food samples.
authors.affiliation: Erciyes University, Faculty of Sciences, Department of Chemistry, 38039 Kayseri, Turkey; Institute of Chemical Sciences, University of Peshawar, Peshawar, Pakistan.
authors.forename: Mansoor
authors.initials: M
authors.lastname: Khan
authors.affiliation: Erciyes University, Faculty of Sciences, Department of Chemistry, 38039 Kayseri, Turkey.
authors.forename: Erkan
authors.initials: E
authors.lastname: Yilmaz
authors.affiliation: Niğde University, Faculty of Sciences-Arts, Department of Chemistry, 51240 Nigde, Turkey.
authors.forename: Basak
authors.initials: B
authors.lastname: Sevinc
authors.affiliation: Niğde University, Faculty of Sciences-Arts, Department of Chemistry, 51240 Nigde, Turkey.
authors.forename: Ertugrul
authors.initials: E
authors.lastname: Sahmetlioglu
authors.affiliation: Institute of Chemical Sciences, University of Peshawar, Peshawar, Pakistan.
authors.forename: Jasmin
authors.initials: J
authors.lastname: Shah
authors.affiliation: Institute of Chemical Sciences, University of Peshawar, Peshawar, Pakistan.
authors.forename: Muhammad Rasul
authors.initials: MR
authors.lastname: Jan
authors.affiliation: Erciyes University, Faculty of Sciences, Department of Chemistry, 38039 Kayseri, Turkey. Electronic address: soylak@erciyes.edu.tr.
authors.forename: Mustafa
authors.initials: M
authors.lastname: Soylak
mesh_terms: D000327:Adsorption; D000499:Allylamine / Q000737:chemistry*; D053000:Analytic Sample Preparation Methods; D006108:Graphite / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D059346:Magnets / Q000737:chemistry; D019216:Metals, Heavy / Q000737:chemistry / Q000302:isolation & purification*; D053761:Nanocomposites / Q000737:chemistry*; D010087:Oxides / Q000737:chemistry*; D011108:Polymers / Q000737:chemistry*; D052616:Solid Phase Extraction / Q000379:methods*; D014753:Vinyl Compounds / Q000737:chemistry; D014874:Water Pollutants, Chemical / Q000737:chemistry / Q000302:isolation & purification
chemical_list: D019216:Metals, Heavy; D010087:Oxides; D011108:Polymers; D014753:Vinyl Compounds; D014874:Water Pollutants, Chemical; D000499:Allylamine; D006108:Graphite; C004985:divinyl benzene; C011566:vinyl acetate
keywords: Flame atomic absorption spectrometry; Magnetic nanocomposite; Magnetic solid phase extraction; Preconcentration; Trace metal ions