Synthesis, characterization and analytical application of Zn(II)-imprinted polymer as an efficient solid-phase extraction technique for trace determination of zinc ions in food samples

Behbahani, Mohammad; Salarian, Mani; Bagheri, Abbas; Tabani, Hadi; Omidi, Fariborz; Fakhari, Ali Reza

doi:10.1016/j.jfca.2013.10.003

Cited by 74 publications

(32 citation statements)

References 39 publications

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“…Our ZnIP can adsorb zinc ions 24 times more effectively than the NIP. If we compare the values with those available in the literature (1.2-8.6), it is the highest value [19,22,23].…”

Section: Static Adsorption Capacitymentioning

confidence: 99%

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Synthesis, characterization and application of a novel zinc(II) ion-imprinted polymer

2017

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In our study, a Zn(II) ion-imprinted polymer (ZnIP) and non-imprinted polymer (NIP) were synthesized via free-radical polymerization. 1-Vinylimidazole, ethylene glycol dimethacrylate, 2-hydroxyethylmethacrylate and 2,2 0 -azobisisobutyronitrile were used as functional, cross-linking monomers and free-radical initiator, respectively. The obtained polymer was characterized by various analytical methods (Fourier Transform Infrared Spectroscopy, Transmission Electron Microscopy, Wavelength Dispersive X-ray Fluorescence, UV VIS, thermal analysis). The sorption properties of ZnIP and NIP were evaluated after removal of Zn(II) ions from the polymer network. The optimum pH for adsorption was 7.0. The maximum adsorption capacity at the pH was 5.2 and 0.22 mg/g for ZnIP and NIP, respectively. To determine the selectivity, the polymer was equilibrated with the binary mixture of Zn(II) ions and the interfering ions [Cu(II), Ni(II) or Co(II)]. The relative selectivity of ZnIP was 22.57, 5.44 and 46.17 for Cu(II), Ni(II) and Co(II) ions, respectively. The proposed ZnIP sorbent was applied to determine the zinc ions in urine samples by Wavelength Dispersive X-ray Fluorescence.

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“…Our ZnIP can adsorb zinc ions 24 times more effectively than the NIP. If we compare the values with those available in the literature (1.2-8.6), it is the highest value [19,22,23].…”

Section: Static Adsorption Capacitymentioning

confidence: 99%

“…Introduction samples [18][19][20][21][22]. Biosorption of zinc(II) ion from water using ion-imprinted interpenetrating polymer network was investigated by Girija and Beena [23].…”

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confidence: 99%

Synthesis, characterization and application of a novel zinc(II) ion-imprinted polymer

2017

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“…Solving these problems requires a pre-concentration and a matrix elimination step [9]. The most widely used pre-concentration methods are co-precipitation [10], ion exchange [11], solvent extraction [12], and solid phase extraction [13][14][15][16][17][18]. Solid phase extraction is an attractive technique based on the use of a sorbent that retains the analytes.…”

Section: Introductionmentioning

confidence: 99%

Flame atomic absorption determination of ultra-trace zinc in environmental samples after pre-concentration by solid phase extraction

Payehghadr

2017

Eur. J. Chem.

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A simple, reliable and rapid method for pre-concentration and determination of ultra-trace zinc using octadecyl silica membrane disk modified by a new Schiff base ligand, and flame atomic absorption spectrometry is presented. Various parameters including, pH of aqueous solution, flow rates, the amount of ligand and type of stripping solvents were optimized. The breakthrough volume is greater than 1000 mL with an enrichment factor of more than 200 and 120 ng/L detection limit. The capacity of the membrane disks modified by 8 mg of the ligand was found to be 260 µg of zinc. The effects of various cationic interferences on percent recovery of zinc ion were studied. The method was successfully applied for the determination of zinc ion in different samples, especially determination of ultra-trace amount of zinc in waters and plants. KEYWORDSZinc Schiff base Octadecyl silica disks Solid phase extraction Atomic absorption spectrometry N, Cite this: Eur.

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“…This method can form not only binding sites in cross-linked polymers according to a molecular template but also inorganic cation selective sites called ion imprinted polymers (IIP). Different types of imprinted polymers have been reported for recognition of metal ions, [13][14][15][16][17] especially for toxic heavy metals like Pb, 18,19 Hg 20 and Cd 21,22 in order to improve the detection sensitivity or enhance selectivity for potential interfering species.…”

Section: Introductionmentioning

confidence: 99%

Preparation of Pb(II) Ion Imprinted Polymer and Its Application as the Interface of an Electrochemical Sensor for Trace Lead Determination

Xiong

Huang

et al. 2016

ANAL. SCI.

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An ion imprinted polymer (IIP) was synthesized by using Pb(II) as a template, methacrylic acid as a monomer, 8-hydoxyquinoline as a ligand, ethylene glycol dimethacrylate (EGDMA) as a crosslinker, and azobisisobutyronitrile as initiator. It can be applied to prepare lead ion selective voltammetric sensor for Pb(II) adsorption and trace detection. The Pb(II)-IIP was characterized by FTIR spectra and SEM image. Under optimized conditions of polymerization, the Pb(II)-IIP showed good adsorption behavior toward Pb(II), with a magnitude of three times higher than that of the non imprinted polymer (NIP). Also, it exhibited a favorable selectivity for Pb(II), compared with other heavy metal ions of Hg(II), Cd(II), Cu(II), and a negligible adsorption to the other cations. The synthesized IIP was used to determine trace levels of Pb(II) in food and water samples, with a calibration linear range over Pb(II) concentrations of 0.05 -60 μM and a limit of detection at 0.01 μM.

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Synthesis, characterization and analytical application of Zn(II)-imprinted polymer as an efficient solid-phase extraction technique for trace determination of zinc ions in food samples

Cited by 74 publications

References 39 publications

Synthesis, characterization and application of a novel zinc(II) ion-imprinted polymer

Synthesis, characterization and application of a novel zinc(II) ion-imprinted polymer

Flame atomic absorption determination of ultra-trace zinc in environmental samples after pre-concentration by solid phase extraction

Preparation of Pb(II) Ion Imprinted Polymer and Its Application as the Interface of an Electrochemical Sensor for Trace Lead Determination

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