An Amperometric Sensor for Sunset Yellow FCF Detection Based on Molecularly Imprinted PolypyrroleReportar como inadecuado




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Anelectrochemical method for fast detecting the concentration of sunset yellowFCF in wine samples was developed in this study. The sensor based on imprintedfilms which fabricated by electropolymerization of pyrrole on a glassy carbonelectrode in the presence of sunset yellow FCF as the template. Comparing tothe polypyrrole non-imprinted modified NIP electrode, the polypyrrolemolecularly imprinted polymer MIP electrode improved the electrochemicalperformance of the sensor significantly. The peak current at about 0.26 V waslinear with the concentration of sunset yellow FCF from 0.4 to 2 μM and from 2 to 8 μM. It can be used for more than 10 times to maintain a stableresponse result. The sensor had the good selectivity on sunset yellow FCF,amaranth and tartrazine, which the selection factors were 1.00, 0.80 and 0.85,respectively.

KEYWORDS

Electrochemical Sensor; Polypyrrole; Sunset Yellow FCF; Molecularly Imprinted Polymers

Cite this paper

J. Xu, Y. Zhang, H. Zhou, M. Wang, P. Xu and J. Zhang -An Amperometric Sensor for Sunset Yellow FCF Detection Based on Molecularly Imprinted Polypyrrole,- Engineering, Vol. 4 No. 10B, 2012, pp. 159-162. doi: 10.4236-eng.2012.410B041.





Autor: Jinfeng Xu, Yi Zhang, Hao Zhou, Mingwei Wang, Peidong Xu, Juankun Zhang

Fuente: http://www.scirp.org/



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