Abstract
A composite film modified glassy carbon electrode (GCE) fabricated with spinning coating of multiwalled carbon nano-tube (MWNT) /1-butyl-3-methylimidazolium tetrafluoroborate/chitosan sol was developed for the electrochemical determination of 4-nitrophenol (4-NP). An obvious reduction peak located at about −0.688 V was observed with voltammetric measurements in the potential range from 0.200 V to −1.00 V. Compared with the bare GCE, the reduction peak potential shifted positively and the peak current increased significantly. All experimental parameters for the determination of 4-NP were optimized. It was found that the reduction peak current was proportional to 4-NP concentration in the range from 3.00 × 10−7 to 2.00 × 10−5 mol l−1 with the detect limitation of 1.00 × 10−7 mol l−1 (S/N = 3) after accumulation for 90 s. The proposed method was successfully applied for the determination of trace amounts of 4-NP in lake water.
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Published in Russian in Elektrokhimiya, 2009, Vol. 45, No. 11, pp. 1388–1393
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Chen, J., Yang, G., Chen, M. et al. Sensitive determination of 4-nitrophenol based on multi-walled carbon nano-tube/ionic liquid/chitosan composite film modified electrode. Russ J Electrochem 45, 1287–1291 (2009). https://doi.org/10.1134/S1023193509110093
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DOI: https://doi.org/10.1134/S1023193509110093