Use of Nanoporous Cu(II) Ion Imprinted Polymer as a New Sorbent for Preconcentration of Cu(II) in Water, Biological, and Agricultural Samples and its Determination by Electrothermal Atomic Absorption Spectrometry

2014 ◽  
Vol 97 (4) ◽  
pp. 1159-1166 ◽  
Author(s):  
Hamid Fazelirad ◽  
Mohammad Ali Taher ◽  
Hamid Ashkenani
Keyword(s):  
Electrothermal Atomic Absorption Spectrometry ◽  
Absorption Spectrometry ◽  
Selective Extraction ◽  
Bulk Polymerization ◽  
Ion Imprinted Polymer ◽  
Imprinted Polymer ◽  
Polymeric Particles ◽  
Ion Imprinted ◽  
Maximum Sorption

Abstract A new and selective Cu(II) ion imprinted polymer was prepared by formation of 1-(2-pyridylazo)-2-naphthol complex for selective extraction and preconcentration of Cu ions. Polymerization was performed with ethylene glycol dimethacrylate as a crosslinking monomer and methacrylic acid as a functional monomer in the presence of 2,2′-azobis(isobutyronitrile) as an initiator via a bulk polymerization method. The Cu(II) imprinted polymeric particles were characterized by scanning electron microscopy and IR spectrometry. The imprint Cu ion was removed from the polymeric matrix using 2 M HNO3. Optimum pH for maximum sorption was 5–8. Maximum sorbent capacity and the enrichment factor for Cu(II) were 11.3 mg/g and 100, respectively. The RSD and LOD of the method were evaluated as ±4.3% and 8.7 ng/L, respectively. The proposed method is simple, highly selective, and sensitive and can be applied to the determination of ultratrace amounts of Cu in water, biological, and agricultural samples.

Preparation and Application of Nanostructure Ion-Imprinted Polymer for Selective Solid-Phase Extraction of Pb Ions in Water, Hair, and Food Samples

2016 ◽  
Vol 99 (5) ◽  
pp. 1363-1369 ◽  
Author(s):  
Maryam Dehghani Soltani ◽  
Mohammad Ali Taher ◽  
Mansoureh Behzadi
Keyword(s):  
Solid Phase ◽  
Electrothermal Atomic Absorption Spectrometry ◽  
Absorption Spectrometry ◽  
Bulk Polymerization ◽  
Food Samples ◽  
Ion Concentration ◽  
Ion Imprinted Polymer ◽  
Imprinted Polymer ◽  
Ion Imprinted ◽  
Pb Ions

Abstract In this research, nanostructure Pb(II) ion-imprinted polymer (IIP) was prepared by formation of 1,5-diphenylthiocarbazon (dithizone) complex. Polymerization was performed via bulk polymerization, with methacrylic acid as the functional monomer and ethylene glycol dimethacrylate as the cross-linking monomer in the presence of ammonium persulfate as the initiator. To characterize the synthesized IIP, FTIR spectroscopy and field emission scanning electron microscopy were used. This polymer was used for selective preconcentration of ultra-trace amounts of Pb ions through the SPE method. The Pb ion concentration was determined by electrothermal atomic absorption spectrometry. In the optimization process, the effects of various factors, such as pH of the sample solution, type and concentration of eluent, equilibrium sorption and desorption times, and sample volume, were investigated. Under optimized conditions, the maximum sorbent capacity was 38.46 mg/g and the enrichment factor was 200. Linearity was within the range 1.0–320.0 ng/L, with good r2 values. The LOD was 0.55 ng/L, and the intraday and interday RSD values (n = 7, 20 ng/L Pb ions) were 2.8 and 3.5%, respectively. This selective and sensitive proposed method was applied successfully to the determination of Pb in water, hair, and food samples, with high recoveries.

Synthesis, Characterization and Selective Recognition of Lead Using a New Ion Imprinted Polymer Material

2011 ◽  
Vol 306-307 ◽  
pp. 688-691 ◽  
Author(s):  
Hai Yan Zhuang ◽  
Hui Zhi Li ◽  
Yang Xue
Keyword(s):  
Crosslinking Agent ◽  
Absorption Spectrometry ◽  
Lead Ion ◽  
Binary Complex ◽  
Ion Imprinted Polymer ◽  
Imprinted Polymer ◽  
Flame Atomic Absorption ◽  
Relative Standard ◽  
Ion Imprinted

A new ion-imprinted polymer (IIP) material was synthesized by copolymerization of 4-vinylpyridine(VP) as monomer, ethylene glycol dimethacrylate(EGDMA) as crosslinking agent and 2,2΄-azobisisobutyronitrile(AIBN) as initiator in the presence of Pb–1,5-diphenylcarbazone(Pb-DHCB) complex. Blank non-imprinted polymer (NIP) were prepared under identical conditions without the use of lead imprint ion. The synthesized polymers were characterized by IR spectroscopy and elemental analyzer techniques. Of the several polymers synthesized, only the imprinted polymer formed with binary complex of Pb2+–DHCB showed quantitative enrichment of lead ion from aqueous solution. The relative standard deviation of the five replicate determinations of Pb (II) was3.26%. The detection limit for 150 mL of sample was 1.6 µg L-1 using flame atomic absorption spectrometry. The developed method was successfully applied to the determination of trace lead in environmental samples with satisfactory results.

Preparation of Cu2+ Imprinted Polymer Microspheres and its Application for the Determination of Cu2+ in Water

2013 ◽  
Vol 389 ◽  
pp. 7-11 ◽  
Author(s):  
Yong Feng Kang ◽  
Hua Jin Shi ◽  
Lin Ge Yang ◽  
Jun Xia Kang ◽  
Zi Qi Zhao
Keyword(s):  
Water Samples ◽  
Tap Water ◽  
Absorption Spectrometry ◽  
Ion Imprinted Polymer ◽  
Imprinted Polymer ◽  
Surface Molecular Imprinting ◽  
Mixed Aqueous Solution ◽  
Ion Imprinted ◽  
Surface Molecular Imprinting Technique

Copper (II) imprinted polymer particles were prepared by surface molecular imprinting technique in toluenewith 1-hy-droxy-4-(prop-2-enyloxy)-9, 10-anthraquinone (AQ) as the functional monomer, silica gel as the carrier.The effect of adsorption time, acidity, temperature and concentration on adsorption capacity was investigated by atomic absorption spectrometry. Selectivity for Cu2+ of the prepared polymer was also studied in mixed aqueous solution, the ion imprinted polymer were applied to the determination of Cu2+ in river and tap water samples, the concentration of Cu2+ in water samples were determined and the recoveries of Cu2+ in river and tap water samples were 110.7% and 109.2%, respectively.

A magnetic ion-imprinted polymer composed of silica-coated magnetic nanoparticles and polymerized 4-vinyl pyridine and 2,6-diaminopyridine for selective extraction and determination of lead ions

2020 ◽  
Vol 44 (18) ◽  
pp. 7561-7568
Author(s):  
Mohammad Landarani ◽  
Ali Akbar Asgharinezhad ◽  
Homeira Ebrahimzadeh
Keyword(s):  
Magnetic Nanoparticles ◽  
Selective Extraction ◽  
Lead Ions ◽  
Ion Imprinted Polymer ◽  
Imprinted Polymer ◽  
Ion Imprinted ◽  
Separation And Preconcentration ◽  
Vinyl Pyridine ◽  
Magnetic Ion

A novel, sensitive and highly selective magnetic ion-imprinted polymer for facile separation and preconcentration of trace quantities of Pb(ii) ions.

scholarly journals Rapid and selective extraction of trace amount of Pb(II) in aqueous samples using a magnetic ion-imprinted polymer and detection by flame atomic absorption spectrometry

2019 ◽  
Vol 44 (4) ◽  
pp. 73
Author(s):  
Saeed Babaee ◽  
Seyed Ghorban Hosseini ◽  
Mohammad Mirzaei
Keyword(s):  
Absorption Spectrometry ◽  
Selective Extraction ◽  
Gravimetric Analysis ◽  
Ion Imprinted Polymer ◽  
Imprinted Polymer ◽  
Flame Atomic Absorption ◽  
Structure Morphology ◽  
Ion Imprinted ◽  
Imagej Software ◽  
Magnetic Ion

A magnetic Pb(II) ion-imprinted polymer was synthesized using magnetic Fe3O4@SiO2 nanospheres as supporter, n-benzoyl-n-phenyl hydroxylamine as ligand, 4-vinyl pyridine as monomer, ethylene glycol dimethacrylate as crosslinker and 2,2′-azobis(isobutyronitrile) as the initiator. The template was removed from the polymer using 4 mL of HCl (2 mol L-1). The chemical structure, morphology-particle size, elemental analysis, thermal behavior and magnetic properties of the sorbent were evaluated using Fourier-transform infrared spectroscopy, scanning electron microscopy & ImageJ software - Energy dispersive X-ray system, thermal gravimetric analysis and vibrating sample magnetometry. Various parameters such as pH, equilibrium extraction time, temperature and the eluent were optimized. The results showed the sorbent adsorption capacity was 92.3 mg g-1 in pH 6.0 media, equilibrium time of 7 min at 40 °C. Calibration linearity was 2-150 µg L-1 with detection limit of 0.3 µg L-1. The prepared sorbent had high selectivity and was successfully applied to the removing of lead in real samples.

Synthesis and characterization of ion imprinted polymeric nanoparticles for selective extraction and determination of mercury ions

2015 ◽  
Vol 7 (22) ◽  
pp. 9641-9648 ◽  
Author(s):  
Beshare Hashemi ◽  
Mojtaba Shamsipur ◽  
Ali Javadi ◽  
Mohammad Kazem Rofouei ◽  
Abbas Shockravi ◽  
...  
Keyword(s):  
Polymeric Nanoparticles ◽  
Selective Extraction ◽  
Ion Imprinted Polymer ◽  
Mercury Ions ◽  
Aqueous Samples ◽  
Imprinted Polymer ◽  
Fast Recognition ◽  
Ion Imprinted

In the present work we have prepared a novel Hg2+-ion imprinted polymer which has efficient analytical performance in pre-concentration of mercury. The proposed sorbent permits fast recognition of mercury ions in aqueous samples.

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