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Talanta. 2013 May 15;109:185-90. doi: 10.1016/j.talanta.2013.02.004. Epub 2013 Feb 8.

Development of electrochemical method for the determination of olaquindox using multi-walled carbon nanotubes modified glassy carbon electrode.

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College of Chemistry, Liaoning University, Shenyang 110036, PR China.


A simple and highly sensitive method for the electrochemical determination of olaquindox (OLA) was developed, which was carried out on the multi-walled carbon nanotubes (MWCNT) modified glassy carbon electrode (MWCNT/GCE) using cyclic voltammetry (CV) and differential pulse voltammetry (DPV). The results showed that MWCNT remarkably enhanced the reduction of OLA, which improved the cathodic peak current of OLA significantly. Under the optimum condition, the linear range for the calibration curve was 0.3-18.0 μg mL(-1) with a detection limit of 0.26 μg mL(-1). The MWCNT/GCE showed a well reproducibility and the relative standard deviation (R.S.D.) was 3.5% (n=9). And a great anti-interference ability of the MWCNT/GCE was also observed. Finally, the MWCNT/GCE was satisfactorily employed to analyze some synthetic and real water samples.

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