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Reference type: Journal
Authors: Jiang XM, Tian W, Zhao CD, Zhang HX, Liu MC
Article Title: A novel sol-gel-material prepared by a surface imprinting technique for the selective solid-phase extraction of bisphenol A.
Publication date: 2007
Journal: Talanta
Volume: 72
Issue: (1)
Page numbers: 119-125.
DOI: 10.1016/j.talanta.2006.10.006
Alternative URL: http://www.sciencedirect.com/science/article/B6THP-4MBT1N0-2/2/5284761e9c95dc016bce16e6080639b6

Abstract: A novel and simple imprinted amino-functionalized silica gel material was synthesized by combining a surface molecular imprinting technique with a sol-gel process on the supporter of activated silica gel for solid-phase extraction-high performance liquid chromatography (SPE-HPLC) determination of bisphenol A (BPA). Non-imprinted silica sorbent was synthesized without the addition of BPA using the same procedure as that of BPA-imprinted silica sorbent. The BPA-imprinted silica sorbent and non-imprinted silica sorbent were characterized by FT-IR and the static adsorption experiments. The prepared BPA-imprinted silica sorbent showed high adsorption capacity, significant selectivity and good site accessibility for BPA. The maximum static adsorption capacity of the BPA-imprinted and non-imprinted silica sorbent for BPA was 68.9 and 34.0 mg g-1, respectively. The relatively selective factor value of this BPA-imprinted silica sorbent was 4.5. Furthermore, the difference of the retention characteristics of BPA on the C8 SPE column and BPA-imprinted silica SPE (MIP-SPE) was compared. The MIP-SPE-HPLC method showed higher selectivity to BPA than the traditional SPE-HPLC method. At last, the BPA-imprinted polymers were used as the sorbent in solid-phase extraction to determine BPA in water samples with satisfactory recovery higher than 99% (R.S.D. 3.7%)
Template and target information: bisphenol A, BPA
Author keywords: Molecularly imprinted polymers, bisphenol A, Solid-phase extraction, high performance liquid chromatography

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