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    Preparation of sinapinaldehyde modified mesoporous silica materials and their application in selective extraction of trace Pb(II)

    Access Status
    Fulltext not available
    Authors
    Zhang, L.
    Hu, Xun
    Yu, C.
    Crawford, R.
    Yu, A.
    Date
    2013
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Zhang, L. and Hu, X. and Yu, C. and Crawford, R. and Yu, A. 2013. Preparation of sinapinaldehyde modified mesoporous silica materials and their application in selective extraction of trace Pb(II). International Journal of Environmental Analytical Chemistry. 93 (12): pp. 1274-1285.
    Source Title
    International Journal of Environmental Analytical Chemistry
    DOI
    10.1080/03067319.2012.736974
    ISSN
    0306-7319
    School
    Fuels and Energy Technology Institute
    URI
    http://hdl.handle.net/20.500.11937/10712
    Collection
    • Curtin Research Publications
    Abstract

    A new solid phase extractant, sinapinaldehyde (SA) modified SBA-15 mesoporous silica, was developed for selective extraction and preconcentration of trace Pb(II) from aqueous solutions. The successful immobilization of SA on SBA-15 and the strong interaction between SA-SBA-15 and Pb(II) were characterized and confirmed by FTIR spectroscopy and scanning electron microscopy. Parameters such as solution pH, shaking time, eluent condition and sample volume were optimized so that the maximum removal of Pb(II) from solution could be achieved. At pH 4.0, the maximum adsorption capacity of the sorbent for Pb(II) was found to be 33.6 mg g-1 and the adsorbed Pb(II) could be completely eluted using a mixed solution of 2 M HCl and 5% CS(NH2)2. Some common metal ions such as K(I), Na(I), Mg(II), Ca(II), Cr(III), Fe(III), Co(II), Ni(II), Cu(II), Zn(II), Cd(II) and Hg(II) did not interfere with the adsorption of trace Pb(II). The detection limit of the present method was found to be 1.3 ng mL-1 and the relative standard deviation was less than 2.0% (n = 8). These results suggested that this new sorbent is very efficient and selective for the removal of trace Pb(II) in water samples. © 2013 Copyright Taylor and Francis Group, LLC.

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