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Reference type: Journal
Authors: Wang LM, Zhou MH, Jing ZJ, Zhong AF
Article Title: Selective separation of lead from aqueous solution with a novel Pb(II) surface ion-imprinted sol-gel sorbent.
Publication date: 2009
Journal: Microchimica Acta
Volume: 165
Issue: (3)
Page numbers: 367-372.
DOI: 10.1007/s00604-009-0146-2

Abstract: Abstract: A novel Pb(II) ion-imprinted mesoporous sorbent (IIMS) was synthesized by a surface imprinting technique combined with a sol-gel process and characterized by FT-IR and N2 adsorption-desorption. Compared to the non-imprinted mesoporous sorbent (NIMS), the IIMS had a higher adsorption capacity and selectivity for Pb(II). The maximum static adsorption capacities of the IIMS and NIMS for Pb(II) were 221 and 173 mg g?1, respectively. The relative selectivity coefficients of the sorbent for Pb(II) in the presence of Cd(II), Cu(II) and Zn(II) were 3.7, 1.9 and 3.4, respectively. Furthermore, the IIMS possessed a fast kinetics for Pb(II) sorption from aqueous solution with saturation time of < 20 min, and could be used repeatedly. The detection limit (3?) of this method was 0.23 ng mL?1 and relative standard deviation of 11 replicate determinations was 3.7 %. The IIMS has been applied to selectively separate and determine Pb(II) in real water samples with satisfactory results
Template and target information: lead ion, Pb(II)
Author keywords: Pb(II) ion-imprinted mesoporous sorbent, Selective solid-phase extraction, preconcentration, Surface imprinting technique, sol-gel process

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