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

Sensors

Liang Ming¹  Xia Xi¹  Tingting Chen¹ 

[1] The School of Chemistry and Chemical Technology, Nantong University, Nantong, Jiangsu 226001, P.R. China; E-mails:

关键词: Sudan I;    Chili powder;    Multi-wall carbon nanotubes;    Modified electrodes;    Voltammetric determination;   

DOI  :  10.3390/s8031890

来源: mdpi

【 摘 要 】

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).

【 授权许可】

Unknown   
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