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Reference type: Journal
Authors: Zhao CD, Zhao T, Liu XY, Zhang HX
Article Title: A novel molecularly imprinted polymer for simultaneous extraction and determination of sudan dyes by on-line solid phase extraction and high performance liquid chromatography.
Publication date: 2010
Journal: Journal of Chromatography A
Volume: 1217
Issue: (45)
Page numbers: 6995-7002.
DOI: 10.1016/j.chroma.2010.09.005
Alternative URL: http://www.sciencedirect.com/science/article/B6TG8-511G1SF-2/2/21b60790d4770a83593446a46a85fa0c

Abstract: A novel molecularly imprinted polymer was synthesized with attapulgite employed as matrix, which is simple and time-saving. In this method, sudan I was chosen as template molecule, 2-vinylpyridine as functional monomer and ethylene glycol dimethacrylate as cross-linking agent, respectively. The imprinted polymer was characterized by the infrared spectroscopy and transmission electron microscopy. Then the selectivity experiments were performed on sudan dyes and the recognition coefficients for sudan I, sudan II, sudan III and sudan IV were 2.9, 1.9, 1.9 and 2.3, respectively. As the packing material of solid-phase extraction, the imprinted polymer has been applied to on-line concentration of the four sudan dyes in samples from Yellow River water, tomato sauce and sausage. The corresponding analytical methods to determine these sudan dyes have been developed. The limits of detection for these sudan dyes were in the range of 0.01-0.05 ng mL-1 for Yellow River water, 1.0-3.0 ng g-1 for tomato sauce and 0.8-3.0 ng g-1 for sausage
Template and target information: sudan dyes, sudan I, sudan II, sudan III, sudan IV
Author keywords: Molecularly imprinted polymers, Attapulgite, high-performance liquid chromatography, On-line solid-phase extraction, Sudan dyes

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