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Reference type: Journal
Authors: Zhang ZH, Zhang HB, Hu YF, Yao SZ
Article Title: Synthesis and application of multi-walled carbon nanotubes-molecularly imprinted sol-gel composite material for on-line solid-phase extraction and high-performance liquid chromatography determination of trace Sudan IV.
Publication date: 2010
Journal: Analytica Chimica Acta
Volume: 661
Issue: (2)
Page numbers: 173-180.
DOI: 10.1016/j.aca.2009.12.024
Alternative URL: http://www.sciencedirect.com/science/article/B6TF4-4Y0T956-1/2/9262b00fdae286a38169c21c54ad1867

Abstract: A novel composite material of multi-walled carbon nanotubes (MWNTs)-Sudan IV molecularly imprinted polymers (MIPs) was prepared by surface molecular imprinting technique in combination with sol-gel technology. The MWNTs-MIPs were evaluated by scanning electron micrograph (SEM), Fourier transform infrared spectroscopy (FT-IR), and adsorption experiments. The results showed that the MWNTs-MIPs exhibited good selective recognition to Sudan IV. The maximum saturated binding capacity (Qmax) is 63.2áμmolág-1. Applied as sorbent, the MWNTs-MIPs were used for the determination of trace Sudan IV in chilli powder by on-line solid-phase extraction-high-performance liquid chromatography (SPE-HPLC). The results showed that an enrichment factor of 741 was achieved with a loading flow rate of 1.0ámLámin-1 for sampling 50ámL. The MWNTs-MIPs provided a fast and convenience determination platform for Sudan IV in real samples
Template and target information: Sudan IV
Author keywords: molecular imprinting, Multi-walled carbon nanotubes, Sudan IV, On-line solid-phase extraction, high-performance liquid chromatography

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