Synthesis, characterization and application of ion imprinted poly(vinylimidazole) for zinc ion extraction/preconcentration with faas determination

Abstract

In this paper, we describe the synthesis of an ion imprinted polymer (IIP) by homogeneous polymerization and its use in solid-phase to extract and preconcentrate zinc ions. Under optimal conditions (pH 5.0, preconcentration flow rate of 12.0 mL min -1 , and eluted with 1.0 mol L −1 HNO 3 ) this procedure allows the determination of zinc with an enrichment factor of 10.2, and with limits of detection and quantification of 1.5 and 5.0 μg L −1 , respectively. The accuracy of our results was confirmed by analysis of tap water and certified reference materials: NIST 1570a (Spinach leaves) and NIST 1515 (Apple leaves).

Isotherm Studies of Pyrogallol-imprinted Polymers via Precipitation Polymerization

“…The rougher surface was attributed to the binding occurred, resulting in cavities when the template was removed (González et al, 2006). A few similar observations were also reported, which were attributed to the differences in surface morphology between the imprinted polymer and the NIPs (Ahamed et al, 2013;Santos et al, 2014;Sikiti et al, 2014) studied by SEM. Next, the FTIR studies showed that both Py-IP and NIP had similar backbone, due to the similar functional monomer used.…”

Synthesis and evaluation of different adsorbents based on poly(methacrylic acid–trimethylolpropane trimethacrylate) and poly(vinylimidazole–trimethylolpropane trimethacrylate) for the adsorption of tebuthiuron from aqueous medium

“…The lower intensity peak observed at 1630 cm −1 can be assigned to OH deformation (water) or C = C stretching from vinyl groups [27]. The angular out-of-plane deformation of the methyl groups is verified by the band at 1386 cm −1 [28] and those verified at 960 and 760 are assigned to the C-H (imidazole ring) bending out-of-plane [29].…”

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

“…The absorption at 962 and 765 cm -1 is assigned to the C-H (ring) bending outof-plane [33,34]. The peak at 1380 cm -1 is attributed to C=N stretching modes from the ring [21]. The strong and broad absorption bands around 3700-3100 cm -1 correspond to water O-H stretching.…”

“…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].…”

“…In this study, a zinc(II)-imprinted polymer was synthesized via a precipitation polymerization. We followed the procedure given by Queila dos Santos et al [21]. We made some modifications of the synthesis.…”