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

• Main Authors: Queila O. dos Santos, Marcos A. Bezerra, Giovana de Fátima Lima, Kristiany M. Diniz, Mariana G. Segatelli, Talitha O. Germiniano, Vivian da Silva Santos, César R. T. Tarley
• Format: Article
• Language: English
• Published: Sociedade Brasileira de Química 2014-01-01
• Series: Química Nova
• Subjects: ion imprinted polymer; zinc; adsorption
• Online Access: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422014000100012&lng=en&tlng=en

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 HNO3) 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).