Development and application of the tartrazine voltammetric sensors based on molecularly imprinted polymers |
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| Authors: | Zhihua Wang Yijiang Shan Lijuan Xu Guofan Wu Xiaoquan Lu |
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| Affiliation: | 1. Key Laboratory of Bioelectrochemistry and Environmental Analysis of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Chinazhwang@nwnu.edu.cn;3. Key Laboratory of Bioelectrochemistry and Environmental Analysis of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, China |
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| Abstract: | A modified glassy carbon electrode was prepared as an electrochemical voltammetric sensor based on molecularly imprinted polymer film for tartrazine (TT) detection. The sensitive film was prepared by copolymerization of tartrazine and acrylamide on the carbon nanotube-modified glassy carbon electrode. The performance of the imprinted sensor was investigated by cyclic voltammetry, differential pulse voltammetry, and electrochemical impedance spectroscopy in detail. Under the optimum conditions, two dynamic linear ranges of 8?×?10?8 to 1?×?10?6?mol?L?1 and 1?×?10?6 to 1?×?10?5?mol?L?1 were obtained, with a detection limit of 2.74?×?10?8?mol?L?1(S/N?=?3). This sensor was used successfully for tartrazine determination in beverages. |
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| Keywords: | Electro-polymerization electrochemical sensor molecular imprinting multiwalled carbon nanotubes tartrazine |
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