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IJC-A Vol.49A(08) [August 2010] >

Title: Electrochemical reduction of tartrazine at multi-walled carbon nanotube-modified pyrolytic graphite electrode
Authors: Song, Y Z
Xu, J M
Lv, J S
Zhong, H
Ye, Y
Xie, J M
Keywords: Electrochemistry
Cyclic voltammetry
Carbon nanotubes
Pyrolytic graphite electrode
Azo compounds
Issue Date: Aug-2010
Publisher: CSIR
IPC CodeInt. Cl.9 B82B1/00; GOIN27/00; H01M4/00
Abstract: The electrochemical reduction of tartrazine at a multiwalled carbon nanotube-modified pyrolytic graphite electrode is investigated by cyclic voltammetry. A simple, sensitive and inexpensive method for determination of tartrazine is proposed. The accuracy and reproducibility of the determination method have been evaluated. On using the MWCNT/PGE daily and storing under ambient conditions over a period of 2 weeks, the electrode has retained 96.3 % of its initial peak current response for a tartrazine concentration of 50.0 mg L-1. The relative standard deviation for the peak current based on six replicates is 1.2 %, This method has been satisfactorily applied for the determination of tartrazine in real samples in the concentration range of 2.0 – 70.0 mg L-1 and 70.0 – 230.0 mg L-1, with a detection limit of 0.5 mg L-1
Page(s): 1030-1034
Source:IJC-A Vol.49A(08) [August 2010]

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