LAUSR

Abstract In 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.