Study of Electrooxidation Behavior of Nitrite on Gold Nanoparticles/Graphitizing Carbon Felt Electrode and Its Analytical Application

Publication date: February 2019Source: Chinese Journal of Analytical Chemistry, Volume 47, Issue 2Author(s): Wei WEI, Shou-Guo WUAbstractIn this work, a gold nanoparticles/graphitizing carbon felt electrode (AuNPs/GCFE) was fabricated and a disposable sensor was thus fabricated to detect nitrite quickly and conveniently. The kinetic parameters of the electrode were studied in phosphate buffer solution (PBS). Under the optimal conditions, by using cyclic voltammetry, the oxidation peak current was linear with the concentration of nitrite in the range from 1.00 × 10−6 M to 3.35 × 10−3 M, with a detection limit of 9.50 × 10−7 M (3S/k). The influence of various anions on nitrite detection was studied, and the results showed that the fabricated sensor had good specificity toward nitrite.Graphical AbstractA gold nanoparticles/graphitizing carbon felt electrode (AuNPs/GCFE) was fabricated and a disposable sensor was thus fabricated to detect nitrite quickly and conveniently. Under the optimal conditions, by using cyclic voltammetry, the oxidation peak current was linear with the concentration of nitrite. The performance of the electrode and the kinetic parameters of the reaction were also studied, and the results showed that the fabricated sensor had good specificity toward nitrite.
Source: Chinese Journal of Analytical Chemistry - Category: Chemistry Source Type: research