surface ion-imprinted mesoporous sorbent for separation and determination of Pb(II) ion by flame atomic absorption spectrometry

A surface-imprinted mesoporous sorbent for Pb(II) ion was synthesized by the post-synthesis method. The material was characterized by transmission electron microscopy and nitrogen adsorption-desorption isotherms. The adsorption by the material was studied by batch experiments with respect to effects...

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Bibliographic Details
Published in:Mikrochimica acta (1966) 2011-03, Vol.172 (3-4), p.309-317
Main Authors: Liu, Yan, Liu, Zhanchao, Wang, Yun, Dai, Jiangdong, Gao, Jie, Xie, Jimin, Yan, Yongsheng
Format: Article
Language:English
Subjects:
Adsorption
Analytical Chemistry
Characterization and Evaluation of Materials
Chemistry
Chemistry and Materials Science
Comparative analysis
Exact sciences and technology
Hydrochloric acid
Microengineering
Nanochemistry
Nanotechnology
Original Paper
Pb(II)
Polymers
SBA-15
Selective separation
Spectrometric and optical methods
Surface ion-imprinted
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Summary:A surface-imprinted mesoporous sorbent for Pb(II) ion was synthesized by the post-synthesis method. The material was characterized by transmission electron microscopy and nitrogen adsorption-desorption isotherms. The adsorption by the material was studied by batch experiments with respect to effects of pH value, contact time, kinetics, and adsorption isotherms. Both the pseudo-second-order kinetic model and the Langmuir model fit the experimental data well. Compared to other imprints for Pb(II), to the traditional sorbents and to the non-imprinted polymer, the new sorbent displays fast kinetics and higher selectivity. Pb(II) ion can be desorbed from the imprint with 2 M hydrochloric acid with high efficiency. The sorbent was applied to the selective separation and determination of Pb(II) in water and sediment samples with satisfactory results. [graphic removed]
ISSN:0026-3672
1436-5073
DOI:10.1007/s00604-010-0491-1