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Abstract: 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?µg L?1 for nickel and 1.88?µg L?1 for lead, with a precision (n?=?11) of 8% (2.37?µg Ni L?1) for nickel and 11% (8.38?µg 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
Template and target information: nickel ion, lead ion, Ni(II), Pb(II)
Author keywords: On-line solid-phase extraction, ionic imprinted polymer, nickel, lead, seawater, Inductively coupled plasma-optical emission spectrometry