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Sensors 2008, 8(3), 1890-1900; doi:10.3390/s8031890
Article

Electrochemical Determination of Trace Sudan I Contamination in Chili Powder at Carbon Nanotube Modified Electrodes

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Received: 23 January 2008; Accepted: 20 February 2008 / Published: 17 March 2008
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Abstract: We have developed a simple, convenient and inexpensive voltammetric method for determining trace Sudan I contamination in chili powder, based on the catalyzed electrochemical reduction of Sudan I at the carbon nanotube modified electrode. Under optimized conditions, the method exhibited acceptable analytical performance in terms of linearity (over the concentration range 6.0×10–7 to 7.5×10–5 M, r = 0.9967), detection limit (2.0×10–7 M) and reproducibility (RSD = 4.6%, n=10, for 2.0×10–5 M Sudan I).
Keywords: Sudan I; Chili powder; Multi-wall carbon nanotubes; Modified electrodes; Voltammetric determination Sudan I; Chili powder; Multi-wall carbon nanotubes; Modified electrodes; Voltammetric determination
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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MDPI and ACS Style

Ming, L.; Xi, X.; Chen, T.; Liu, J. Electrochemical Determination of Trace Sudan I Contamination in Chili Powder at Carbon Nanotube Modified Electrodes. Sensors 2008, 8, 1890-1900.

AMA Style

Ming L, Xi X, Chen T, Liu J. Electrochemical Determination of Trace Sudan I Contamination in Chili Powder at Carbon Nanotube Modified Electrodes. Sensors. 2008; 8(3):1890-1900.

Chicago/Turabian Style

Ming, Liang; Xi, Xia; Chen, Tingting; Liu, Jie. 2008. "Electrochemical Determination of Trace Sudan I Contamination in Chili Powder at Carbon Nanotube Modified Electrodes." Sensors 8, no. 3: 1890-1900.



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