Study of Electrochemical Sensor for Nitrite Based on Composites of Zirconium Dioxide Nanoparticles/Reduced Graphene Oxide
10.11895/j.issn.0253-3820.160775
- VernacularTitle:二氧化锆/石墨烯复合材料对亚硝酸盐的电化学传感研究
- Author:
Duoliang SHAN
;
Yonglan WANG
;
Yanfeng WANG
;
Xiaoquan LU
- Keywords:
Zirconia;
Reduced graphene oxide;
Nitrite;
Electrochemical sensor
- From:
Chinese Journal of Analytical Chemistry
2017;45(4):502-507
- CountryChina
- Language:Chinese
-
Abstract:
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 3.0×10Symbolm_7-1.0×10Symbolm_6 mol/L and 1.0×10Symbolm_6-6.0×10Symbolm_6 mol/L, and the detection limit was 1.0×10Symbolm_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％.
