Please use this identifier to cite or link to this item: https://hdl.handle.net/11499/37335
Title: Determination of cobalt in food by magnetic solid-phase extraction (MSPE) preconcentration by polyaniline (PANI) and polythiophene (PTH) coated magnetic nanoparticles (MNPs) and microsample injection system–flame atomic absorption spectrometry (MIS-FAAS)
Authors: Elçi, Şükrü Gökhan
Keywords: Cobalt
magnetic nanoparticles (MNPs)
magnetic solid-phase extraction (MSPE)
microsample injection system–flame atomic absorption spectrometry (MIS-FAAS)
polyaniline (PANI)
polythiophene (PTH)
Absorption spectroscopy
Atomic absorption spectrometry
Beverages
Chlorine compounds
Cobalt compounds
Iron oxides
Magnetic nanoparticles
Magnetism
Magnetite
Phase separation
Polyaniline
Synthesis (chemical)
Adsorption capacities
Certified reference materials
Fe3O4 nanoparticles
Flame atomic absorption spectrometry
Magnetic nanoparti cles (MNPs)
Magnetic solidphase extraction (MSPE)
Polyanilines (PAni)
Real sample analysis
Extraction
Publisher: Taylor and Francis Inc.
Abstract: Magnetic nanoparticles (MNPs) named Fe3O4@coPANI-PTH were synthesized by coating Fe3O4 nanoparticles (NPs) with a polyaniline (PANI)/polythiophene (PTH) co-polymer. The feasibility of Fe3O4@coPANI-PTH as the nanosorbent for magnetic solid-phase extraction (MSPE) was evaluated for the determination of Co(II) in real samples using microsample injection system–flame atomic absorption spectrometry (MIS-FAAS). Parameters (sample pH, adsorbent mass, eluent volume, sample volume, and co-existing ion effects) influencing the preconcentration of cobalt were optimized. Under the optimum conditions at pH 10, cobalt was completely adsorbed by 100 mg Fe3O4@coPANI-PTH from 60 mL sample and eluted quantitatively (? 95%) using 1.0 mL of 0.2% thiourea solution in a mixture of 2 mol L-1 HCl and 1 mol L-1 HNO3. The adsorption capacity and characteristics of Fe3O4@coPANI-PTH for cobalt were evaluated with isotherm studies. The accuracy of the optimized method was evaluated by measuring certified reference materials (CRMs) and spiked real samples. The relative error and standard deviation were below 6.0% for the CRM and real sample analyses. The limit of detection was 1.6 µg L-1. The determination of ultra-trace cobalt amounts in various soft drinks, spice, vegetable, and water samples was achieved satisfactorily with this method. © 2020 Taylor & Francis Group, LLC.
URI: https://hdl.handle.net/11499/37335
https://doi.org/10.1080/10739149.2020.1818577
ISSN: 1073-9149
Appears in Collections:Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
Teknoloji Fakültesi Koleksiyonu
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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