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Cyclic voltammetric behaviour of 2,4-dinitrotoluene at a glassy carbon electrode

Honeychurch, Kevin

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Abstract

This paper describes the development of a simple voltammetric method for the measurement of 2,4-dinitrotoluene (24DNT) at glassy carbon electrode (GCE). Initial investigations were undertaken using cyclic voltammetry to characterise the redox behaviour of 24DNT. Over the pH range 2 to 10 two pH dependent reduction peaks were recorded on the initial negative going scan, concluded to result from the reduction of the two nitro groups to the corresponding hydroxylamines. On the return positive going scan two oxidation peaks were recorded, resulting from the oxidation of the hydroxylamine (O1) formed on the initial negative scan. At pH 6, the peak potential of the oxidation process O1 occurred at a potential close to 0 V and was chosen for investigation. The optimum voltammetric conditions required were identified to be supporting electrolyte of 0.1 M pH 6.0 phosphate buffer containing 10 % acetonitrile. Using differential pulse voltammetry, the calibration plot was found to be linear from 5.0 µM to 500 µM (R2= 0.9979), with a detection limit of 11.0 µM (based on a signal-to-noise ratio of 3).

Journal Article Type Article
Publication Date Mar 18, 2020
Journal Scholarly Community Encyclopedia
Peer Reviewed Peer Reviewed
Volume 2019
APA6 Citation Honeychurch, K. (2020). Cyclic voltammetric behaviour of 2,4-dinitrotoluene at a glassy carbon electrode. Scholarly Community Encyclopedia, 2019,
Keywords Cyclic voltammetry, differential pulse voltammetry, 2,4-dinitrotoluene
Publisher URL https://encyclopedia.pub/item/revision/b72d744cff0725f50ad51a1cd4bdbad5
Additional Information Kevin, Honeychurch. Cyclic Voltammetric Behaviour of 2,4-Dinitrotoluene at a Glassy Carbon Electrode, Encyclopedia, 2019, v1, Available online: https://encyclopedia.pu...f0725f50ad51a1cd4bdbad5

https://encyclopedia.pu...f0725f50ad51a1cd4bdbad5
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