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

Zhang, Lijun, Hu, Xun, Yu, Chengzhong, Crawford, Russell and Yu, Aimin (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: 1274-1285. doi:10.1080/03067319.2012.736974


Author Zhang, Lijun
Hu, Xun
Yu, Chengzhong
Crawford, Russell
Yu, Aimin
Title Preparation of sinapinaldehyde modified mesoporous silica materials and their application in selective extraction of trace Pb(II)
Journal name International Journal of Environmental Analytical Chemistry   Check publisher's open access policy
ISSN 0306-7319
1029-0397
Publication date 2013-10-01
Sub-type Article (original research)
DOI 10.1080/03067319.2012.736974
Volume 93
Issue 12
Start page 1274
End page 1285
Total pages 12
Place of publication Oxfordshire, United Kingdom
Publisher Taylor & Francis
Language eng
Subject 1602 Analytical Chemistry
2304 Environmental Chemistry
2312 Water Science and Technology
2311 Waste Management and Disposal
1111 Soil Science
2310 Pollution
2739 Public Health, Environmental and Occupational Health
2307 Health, Toxicology and Mutagenesis
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 and the adsorbed Pb(II) could be completely eluted using a mixed solution of 2 M HCl and 5% CS(NH). 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 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.
Formatted 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.
Keyword Mesoporous silica
Sinapinaldehyde
Lead(II)
Surface modification
Q-Index Code C1
Q-Index Status Confirmed Code
Grant ID DP0776086
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2014 Collection
Australian Institute for Bioengineering and Nanotechnology Publications
 
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