%0 Journal Article
%T Electrochemical Determination of Trace Sudan I Contamination in Chili Powder at Carbon Nanotube Modified Electrodes
%A Liang Ming
%A Xia Xi
%A Tingting Chen
%A Jie Liu
%J Sensors
%D 2008
%I MDPI AG
%R 10.3390/s8031890
%X 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¡Á10¨C7 to 7.5¡Á10¨C5 M, r = 0.9967), detection limit (2.0¡Á10¨C7 M) and reproducibility (RSD = 4.6%, n=10, for 2.0¡Á10¨C5 M Sudan I).
%K Sudan I
%K Chili powder
%K Multi-wall carbon nanotubes
%K Modified electrodes
%K Voltammetric determination
%U http://www.mdpi.com/1424-8220/8/3/1890