Determination of nitrite in food using Pt—Fe(III)/MWCNTs modified electrodes by voltammetry measurement

Authors

HAO Yucui, Department of Environmental and Chemical Engineering, Tangshan College, Tangshan, Hebei 063000, China

Abstract

The platinum particles-Fe(III) and multi-walled carbon nanotubes (MWCNTs) modified glassy carbon electrodes(Pt—Fe(Ⅲ)/MWCNTs/GCE) were prepared by drop coating and electrochemical deposition. The electrocatalytic property of Pt—Fe(Ⅲ)/MWCNTs/GCE on NO₂^- were studied, the experimental conditions were optimized and a differential pulse voltammetric method for determining NO₂^- was established．The oxidation peak current of NO₂^- is proportional to the concentration of NO₂^- over the range of 3.0×10^-7～2.0×10^-3 mol/L with the detection limit of 1.0×10^-7 mol/L (r = 0.999 3). The method was applied to the determination of NO₂^- in food, and the result was satisfactory.

Publication Date

6-28-2015

First Page

43

Last Page

47

DOI

10.13652/j.issn.1003-5788.2015.03.011

Recommended Citation

Yucui, HAO (2015) "Determination of nitrite in food using Pt—Fe(III)/MWCNTs modified electrodes by voltammetry measurement," Food and Machinery: Vol. 31: Iss. 3, Article 11.
DOI: 10.13652/j.issn.1003-5788.2015.03.011
Available at: https://www.ifoodmm.cn/journal/vol31/iss3/11

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