Paper Title:
Electrochemical Determination of Nitrite Based on Gd Doped Nano Titanium Dioxide-Modified Gold Electrode
  Abstract

A simple and reliable method for electrochemical determination of nitrite based on Gd doped nano titanium dioxide (Gd-nano-TiO2) modified gold electrode was well developed in this paper. Using cyclic voltammetry, the modified electrode shows electrocatalytic activity for oxidation of nitrite in 0.10 mol×L-1 sulfuric acid solution (pH=0.70). The catalytic peak current was found to be linear with nitrite concentration in the range of 2.0´10-6 ~ 2.0´10-4 mol×L-1, with a detection limit of 1.1´10-6 mol×L-1 (S/N=3). Compared with spectrophotometry, the Gd-nano-TiO2 modified Au electrode could be used for the determination of nitrate in the ham sausage samples with a satisfactory recovery of 95.9 ~ 103.2%, showing its promising application in safety evaluation for food.

  Info
Periodical
Advanced Materials Research (Volumes 239-242)
Edited by
Zhong Cao, Xueqiang Cao, Lixian Sun, Yinghe He
Pages
2046-2049
DOI
10.4028/www.scientific.net/AMR.239-242.2046
Citation
M. L. Zhang, J. L. He, C. L. Xu, L. G. Zhu, Y. F. Zheng, Y. Zhou, L. Zhang, D. M. Luo, Z. Cao, "Electrochemical Determination of Nitrite Based on Gd Doped Nano Titanium Dioxide-Modified Gold Electrode", Advanced Materials Research, Vols. 239-242, pp. 2046-2049, 2011
Online since
May 2011
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$32.00
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