Química Nova (Jan 2014)

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

  • 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

DOI
https://doi.org/10.1590/S0100-40422014000100012
Journal volume & issue
Vol. 37, no. 1
pp. 63 – 68

Abstract

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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).

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