title: Synthesis and application of ion-imprinted polymer for extraction and pre-concentration of iron ions in environmental water and food samples.
abstract: In this work, a novel Fe(III) ion imprinted polymer as a sorbent for extraction of iron ions from different samples was synthesized. Precipitation of thermal copolymerization was used for preparation of polymeric sorbent. In this technique, methacrylic acid, ethylene glycoldimethacrylate, 2,2'-azobisisobutyronitrile and (DHBPT)2 {(DHBPT)2=3,6-bis (3,5-dimethyl-1-H-pyrzol-1-yl)-1,2-dihydro-1,2,4,5-tetrazine)} were used as monomer, cross-linker, initiator and ligand, respectively, in the presence of Fe(III) ions and ethanol as a porogenic solvent. Moreover, control polymer (NIP) particles were similarly prepared without the Fe(III) ions. XRD, FT-IR, SEM and nitrogen adsorption-desorption techniques have been used to characterization of these prepared polymeric samples. Iron ion imprinted polymer particles, abbreviated as Fe(III)-IIP, were leached with 50 mL of HCl (50% (v/v)). Absorption capacity for ion imprinted polymer was calculated about 40.41 mg·g(-1). Per-concentration of iron ion was investigated as a function of pH, weight of IIP, adsorption and desorption times, and volumes of sample. FAAS technique was used to determination of Fe(III) ion in the foods and waters samples.
authors.affiliation: Department of Chemistry, Ilam University, Ilam, Iran. Electronic address: mahmoudroushani@yahoo.com.
authors.forename: Mahmoud
authors.initials: M
authors.lastname: Roushani
authors.affiliation: Department of Chemistry, Ilam University, Ilam, Iran.
authors.forename: Tahereh Musa
authors.initials: TM
authors.lastname: Beygi
authors.affiliation: Department of Chemistry, Ilam University, Ilam, Iran.
authors.forename: Zahra
authors.initials: Z
authors.lastname: Saedi
mesh_terms: D000327:Adsorption; D002138:Calibration; D005504:Food Analysis; D006863:Hydrogen-Ion Concentration; D007477:Ions; D007501:Iron / Q000032:analysis*; D008855:Microscopy, Electron, Scanning; D054802:Molecular Imprinting / Q000379:methods*; D008970:Molecular Weight; D009584:Nitrogen / Q000737:chemistry; D011108:Polymers / Q000138:chemical synthesis* / Q000737:chemistry; D017550:Spectroscopy, Fourier Transform Infrared; D013997:Time Factors; D014867:Water / Q000737:chemistry*; D014961:X-Ray Diffraction
chemical_list: D007477:Ions; D011108:Polymers; D014867:Water; D007501:Iron; D009584:Nitrogen
keywords: Fe(III); Food samples; Ion imprinted polymer; Pre-concentration