Citation: Mohammad Mazloum-Ardakani, Hossein Rajabi, Hadi Beitollahi. Homogeneous and nanomolar detection of hydrazine by indigocarmine as a mediator at the surface of TiO₂ nanoparticles modified carbon paste electrode[J]. Chinese Chemical Letters, ;2012, 23(2): 213-216. doi: 10.1016/j.cclet.2011.10.016 shu

Homogeneous and nanomolar detection of hydrazine by indigocarmine as a mediator at the surface of TiO₂ nanoparticles modified carbon paste electrode

a Department of Chemistry, Faculty of Science, Yazd University, Yazd 89195-741, Iran;
b Environment Department, Research Institute of Environmental Sciences, International Center for Science, High Technology & Environmental Sciences, Kerman, Iran

Received Date: 15 July 2011

Fund Project: The authors wish to thankful the Yazd University Research Council, IUT Research Council and Excellence in Sensors for financial support of this research. We gratefully acknowledge Dr. N. Taghavinia of Sharif University of Technology for synthesis of the nanoparticles.

The homogeneous electrocatalytic oxidation of hydrazine (HZ) has been studied by indigocarmine (IND) as a mediator at the surface of TiO₂ nanoparticles modified carbon paste electrode (TNMCPE). Cyclic voltammetry was used to study the electrochemical behavior of IND at different scan rates. The voltammetric response of the modified electrode was linear against the concentration of HZ in the ranges of 3.0×10^-8 mol/L-7.0×10^-6 mol/L with differential pulse voltammetry method. The detection limit (3σ) was determined as 27.3 nmol/L. To evaluate the applicability of the proposed method to real samples, the modified CPE was applied to the determination of HZ in water samples.
- Hydrazine, Indigocarmine, TiO₂ nanoparticles, Modified electrode, Carbon paste electrode, Nanomolar detection
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