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Reference type: Journal
Authors: Li M, Li R, Tan J, Jiang ZT
Article Title: Titania-based molecularly imprinted polymer for sulfonic acid dyes prepared by sol-gel method.
Publication date: 2013
Journal: Talanta
Volume: 107
Page numbers: 203-210.
DOI: 10.1016/j.talanta.2013.01.014
Alternative URL: http://www.sciencedirect.com/science/article/pii/S0039914013000246

Abstract: A novel titania-based molecularly imprinted polymer (MIP) was synthesized through sol-gel process with sunset yellow (Sun) as template, without use of functional monomer. MIP was used as a solid-phase extraction material for the isolation and enrichment of sulfonic acid dyes in beverages. The results showed that MIP exhibited better selectivity, higher recovery and adsorption capacity for the sulfonic acid dyes compared to the non-imprinted polymer (NIP). MIP presented highest extraction selectivity to Sun when pH less than or equal to 3. The adsorption capacity was 485.9 mg g-1, which was larger than that of NIP (384.7 mg g-1). The better clean-up ability demonstrated the capability of MIP for the isolation and enrichment of sulfonic acid dyes in complicated food samples. The mean recoveries for the sulfonic acid dyes on MIP were from 81.9% to 97.2% in spiked soft drink
Template and target information: sulfonic acid dyes, sunset yellow, SUN
Author keywords: titania, molecularly imprinted polymer, sol-gel process, Sulfonic acid dyes, Solid-phase extraction

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