On-line ionic imprinted polymer selective solid-phase extraction of nickel and lead from seawater and their determination by inductively coupled plasma-optical emission spectrometry

Abstract

Nickel(II) and lead(II) ionic imprinted 8-hydroxyquinoline polymers were synthesized by a precipitation polymerization technique and were used as selective solid phase extraction supports for the determination of nickel and lead in seawater by flow injection solid phase extraction on-line inductively coupled plasma-optical emission spectrometry. An optimum loading flow rate of 2.25 mL min(-1) for 2 min and an elution flow rate of 2.25 mL min(-1) for 1 min gave an enrichment factor of 15 for nickel. However, a low dynamic capacity and/or rate for adsorption and desorption was found for lead ionic imprinted polymer and a flow rate of 3.00 mL min(-1) for 4-min loading and a flow rate of 2.25 mL min(-1) for 1-min elution gave a enrichment factor of 5. The limit of detection was 0.33 microg L(-1) for nickel and 1.88 microg L(-1) for lead, with a precision (n = 11) of 8% (2.37 microg Ni L(-1)) for nickel and 11% (8.38 microg Pb L(-1)) for lead. Accuracy was also assessed by analyzing SLEW-3 (estuarine water) and TM-24 (lake water) certified reference materials, and the values determined were in good agreement with the certified concentrations.

GGR Biennial Review: Atomic Absorption, Inductively Coupled Plasma‐Atomic Emission Spectrometry, Neutron Activation Analysis and X‐Ray Fluorescence Spectrometry Review for 2008–2009

“…While the method had an enrichment factor of at least 100, recovery of some elements in tap water was < 60% (e.g., Zr, U, Ti, Sm, Te). An online FI SPE technique for either Ni or Pb utilised an ionic imprinted polymer as a selective phase with high specificity for the imprinted analytes (Garcia‐Otero et al. 2009).…”

“…While the method had an enrichment factor of at least 100, recovery of some elements in tap water was < 60% (e.g., Zr, U, Ti, Sm, Te). An online FI SPE technique for either Ni or Pb utilised an ionic imprinted polymer as a selective phase with high specificity for the imprinted analytes (Garcia-Otero et al 2009). To take better advantage of the multielement capability of ICP-AES, the Ni imprinted polymer was also tested for a suite of other elements (Cu, Pb, Zn, As, Cd), demonstrating recoveries close to 100% for Cu, Pb and Zn, and sub lg l -1 ICP-AES detection limits ).…”

Determination of Trace Nickel in Water Samples by Graphite Furnace Atomic Absorption Spectrometry after Mixed Micelle-Mediated Cloud Point Extraction

“…A variety of procedures for preconcentration of nickel, such as dispersive liquid–liquid extraction (DLLME) [ 12 , 13 ], solid phase extraction (SPE) [ 14 , 15 ], membrane extraction [ 16 ], and cloud point extraction (CPE) [ 17 , 18 ], have been developed. Among them, CPE, based on surfactant-mediated phase separation, has become an attractive area for separation and preconcentration of trace metal ions in recent years.…”

Selective Separation and Analysis of Pb(II) Using a New Surface Imprinted Multi-Walled Carbon Nanotubes Combined with AAS

“…It is flexible, economical, environmental-friendly, highly selective, speedy, simple, rich in accessible sites, safe, easily automatic, and quick in mass transfer and binding kinetics [8][9][10]. The particularly promising applications of SIT are trace enrichment and trace separation [8][9][10][11][12]. SIT is mainly based on the utilization of inorganic and organic solid sorbents which possess a stable and insoluble porous matrix having suitable active groups (typically organic groups) to interact with metal ions.…”