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Citation: SHAN Duo-Liang, WANG Yong-Lan, WANG Yan-Feng, LU Xiao-Quan. Study of Electrochemical Sensor for Nitrite Based on Composites of Zirconium Dioxide Nanoparticles/Reduced Graphene Oxide[J]. Chinese Journal of Analytical Chemistry, ;2017, 45(4): 502-507. doi: 10.11895/j.issn.0253-3820.160775 shu

Study of Electrochemical Sensor for Nitrite Based on Composites of Zirconium Dioxide Nanoparticles/Reduced Graphene Oxide

Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou 730070, China

Received Date: 21 October 2016
Revised Date: 13 February 2017

Fund Project: This work was supported by the National Natural Science Foundation of China (Nos. 21575115, 21327005)

A nitrite electrochemical sensor based on electrodeposition of zirconium dioxide nanoparticles on reduced graphene oxide modified electrode was successfully constructed for the detection of nitrite. The electrochemical behavior of the modified electrode was investigated by cyclic voltammetry and amperometric i-t curve. Under the optimal conditions, the amperometric i-t curve response of the electrode showed a linear relationship with nitrite concentration in the range of 3.0×10^-7-1.0×10^-6 mol/L and 1.0×10^-6-6.0×10^-6 mol/L, and the detection limit was 1.0×10^-7 mol/L (S/N=3). The fabricated sensor exhibited high sensitivity, good stability and high reproducibility. This sensor was applied for the detection of nitrite in sausage samples with favorable recoveries of 93.7%-110.4% and relative standard deviation (RSD) of 1.6%-2.1%.
- Zirconia,
- Reduced graphene oxide,
- Nitrite,
- Electrochemical sensor
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