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Reference type: Journal
Authors: Zhang HB, Zhang ZH, Hu YF, Yang X, Yao SZ
Article Title: Synthesis of a Novel Composite Imprinted Material Based on Multiwalled Carbon Nanotubes as a Selective Melamine Absorbent.
Publication date: 2011
Journal: Journal of Agricultural and Food Chemistry
Volume: 59
Issue: (4)
Page numbers: 1063-1071.
DOI: 10.1021/jf104064y

Abstract: A novel composite imprinted material, on the basis of a multiwalled carbon nanotube (CNT)-incorporated layer using melamine as a template, methacrylic acid as a functional monomer, and ethylene glycol dimethacrylate as a cross-linker, was synthesized by a surface imprinting technique. The imprinted/CNT sorbent was characterized by a scanning electron microscope (SEM). Adsorption dynamics and a Scatchard adsorption model were employed to evaluate the adsorption process. The results showed that the imprinted/CNT sorbent displayed a rapid dynamic adsorption and a high adsorption capacity of 79.9 μmol g-1 toward melamine. Applied as a sorbent, the imprinted/CNT sorbent was used for the determination of melamine in a real sample by online solid-phase extraction-high-performance liquid chromatography (SPE-HPLC). An enrichment ratio of 563-fold, detection limit (S/N = 3) of 0.3 μg L-1, and quantification limit of 4.5 μg L-1 were achieved.
Template and target information: melamine

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