title: Column solid phase extraction and flame atomic absorption spectrometric determination of manganese(II) and iron(III) ions in water, food and biological samples using 3-(1-methyl-1H-pyrrol-2-yl)-1H-pyrazole-5-carboxylic acid on synthesized graphene oxide.
abstract: A modified, selective, highly sensitive and accurate procedure for the determination of trace amounts of manganese and iron ions is established in the presented work. 3-(1-Methyl-1H-pyrrol-2-yl)-1H-pyrazole-5-carboxylic acid (MPPC) and graphene oxide (GO) were used in a glass column as chelating reagent and as adsorbent respectively prior to their determination by flame atomic absorption spectrometry. The adsorption mechanism of titled metals complexes on GO was investigated by using computational chemistry approach based on PM6 semi-empirical potential energy surface (PES). The effect of some parameters including pH, flow rate and volume of sample and type, volume and concentration of eluent, as well as the adsorption capacity of matrix ions on the recovery of Mn(II) and Fe(III) was investigated. The limit of detection was 145 and 162 ng L(-1) for Mn(II) and Fe(III), respectively. Calibration was linear over the range of 0.31-355 μg L(-1) for Mn(II) and 0.34-380 μg L(-1) for Fe(III) ions. The method was successfully applied for the determination of understudied ions in water, food and biological samples.
authors.affiliation: NFCRS, Nuclear Science & Technology Research Institute, P.O. Box 11365-8486, Tehran, Iran. Electronic address: pourjavid@gmail.com.
authors.forename: Mohammad Reza
authors.initials: MR
authors.lastname: Pourjavid
authors.affiliation: Department of Analytical Chemistry, Faculty of Chemistry, University College of Science, University of Tehran, P.O. Box 14155-6455, Tehran, Iran.
authors.forename: Ali Akbari
authors.initials: AA
authors.lastname: Sehat
authors.affiliation: NFCRS, Nuclear Science & Technology Research Institute, P.O. Box 11365-8486, Tehran, Iran.
authors.forename: Masoud
authors.initials: M
authors.lastname: Arabieh
authors.affiliation: NFCRS, Nuclear Science & Technology Research Institute, P.O. Box 11365-8486, Tehran, Iran.
authors.forename: Seyed Reza
authors.initials: SR
authors.lastname: Yousefi
authors.affiliation: NFCRS, Nuclear Science & Technology Research Institute, P.O. Box 11365-8486, Tehran, Iran.
authors.forename: Majid Haji
authors.initials: MH
authors.lastname: Hosseini
authors.affiliation: NFCRS, Nuclear Science & Technology Research Institute, P.O. Box 11365-8486, Tehran, Iran.
authors.forename: Mohammad
authors.initials: M
authors.lastname: Rezaee
mesh_terms: D015374:Biosensing Techniques / Q000379:methods*; D005410:Flame Ionization / Q000379:methods; D005504:Food Analysis / Q000379:methods*; D007477:Ions; D007501:Iron / Q000032:analysis*; D008345:Manganese / Q000032:analysis*; D052616:Solid Phase Extraction; D013057:Spectrum Analysis / Q000379:methods*; D014867:Water / Q000737:chemistry*
chemical_list: D007477:Ions; D014867:Water; D008345:Manganese; D007501:Iron
keywords: F AAS; Graphene Oxide; Heavy metals; Preconcentration; Solid phase extraction