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Selective separation of lead from aqueous solution with a novel Pb(II) surface ion-imprinted sol-gel sorbent

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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 (3σ) 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.

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Acknowledgement

This work was supported by Shanghai Leading Academic Discipline Project, Project Number : B604.

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Authors and Affiliations

  1. College of Environmental Science & Engineering, Donghua University, Shanghai, 200051, China

    Limin Wang & Meihua Zhou

  2. Department of Environmental Science & Engineering, Jilin Institute of Chemical Technology, Jilin City, 132022, China

    Limin Wang, Zhijuan Jing & Aifu Zhong

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  1. Limin Wang
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  2. Meihua Zhou
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  3. Zhijuan Jing
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  4. Aifu Zhong
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Correspondence to Meihua Zhou.

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Wang, L., Zhou, M., Jing, Z. et al. Selective separation of lead from aqueous solution with a novel Pb(II) surface ion-imprinted sol-gel sorbent. Microchim Acta 165, 367–372 (2009). https://doi.org/10.1007/s00604-009-0146-2

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  • DOI: https://doi.org/10.1007/s00604-009-0146-2

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