Citation: Yi Gui, Yong Nian Ni, Serge Kokot. Simultaneous determination of three 5-nitroimidazoles in foodstuffs by differential pulse voltammetry and chemometrics[J]. Chinese Chemical Letters, ;2011, 22(5): 591-594. doi: 10.1016/j.cclet.2010.12.014 shu

Simultaneous determination of three 5-nitroimidazoles in foodstuffs by differential pulse voltammetry and chemometrics

Yi Gui ^b, ,
Yong Nian Ni ^a,b ,
Serge Kokot ^c

a State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China;
b Department of Chemistry, Nanchang University, Nanchang 330031, China;
c Chemistry, Faculty of Science and Technology, Queensland University of Technology, Brisbane 4001, Australia

Received Date: 2 September 2010

The voltammetric behaviour of three 5-nitroimidazoles, metronidazole, tinidazole and ornidazole, was investigated, and a method was developed for the simultaneous determination of these compounds, based on their reduction at a hanging mercury drop electrode(HMDE)in pH 8.95 buffer with differential pulse voltammetric(DPV)approach.Well defined voltammetric waves with peak potentials of-692,-640 and-652 mV were observed for these compounds, respectively.It is difficult to determine them individually from their mixtures without preseparation, for their voltammetric peaks overlapped seriously, so the chemometrics were used to resolve the overlapped voltammogram and quantify the mixtures.The proposed method was successfully applied to the determination of three 5-nitroimidazoles in milk and honey samples.
- Nitroimidazoles,
- Metronidazole,
- Tinidazole,
- Ornidazole,
- Chemometrics,
- Differential pulse voltammetry
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