Electrocatalytic oxidation of nitrite at an aluminum electrode modified by a chemically deposited palladium pentacyanonitrosylferrate film

Electrochemical Determination of Nitrite Using a Gold Nanoparticles-modified Glassy Carbon Electrode Prepared by the Seed-mediated Growth Technique

“…5). Similar results have also been found on palladium pentacyanonitrosylferrate modified aluminum electrode 14 and on Co(II) porphyrin modified carbon paste electrode 17 for nitrite electrocatalytic oxidation. The pH-independent result seems to be inconsistent with the pH-dependent characteristic of the nitrite oxidation reaction to nitrate.…”

“…Figure 6 illustrates the cyclic voltammograms at lower concentration range and the corresponding calibration curve. The detection limit (S/N = 3) is estimated to be 2.4 × 10 -6 M, lower than that on the palladium pentacyanonitrosylferrate-modified aluminum electrode 14 and the 3-mercaptopropanoic-modified gold electrode. 34 …”

Amperometric Determination of Nitrite at Poly(Methylene Blue)-Modified Glassy Carbon Electrode

“…As shown in , r = 0.999). The detection limit (S/N = 3) for nitrite is 2.00 × 10 −6 M. The linear dynamic range and detection limit obtained at the present poly(methylene blue)-modified GC electrode without the incorporation of nanostructured materials are clearly comparable to those reported in the literature, [7][8][9][10][11][12][13][14] which is a distinctive advantage of the present method.…”

“…Many methods such as spectrophotometry, 3,4 chromatography, 5,6 and electrochemical sensors, [7][8][9][10][11][12][13][14][15][16] have been developed for nitrite determination. Among those methods, electrochemical methods are most favorable in terms of simplicity, speed, and cost effectiveness.…”

Electrocatalytic oxidation of thiosulfate at glassy carbon electrode chemically modified with cobalt pentacyanonitrosylferrate

“…[1][2][3][4][5][6][7][8][9][10] The metal pentacyanonitrosylferrate (MPCNF), a class of polynuclear mixed valence compounds, also have attracted much attention for the preparation of thin films on electrodes in the last years. [11][12][13][14][15][16][17][18][19][20] The MPCNF modified electrodes used for electrocatalytic oxidation of iodide, 11 nitrite, 12 sulfite, 13,14 hydrazine, 16,18 and ascorbic acid 20 and in this studies, M at MPCNF modified electrode was Ni, 11,18,20 Pd, 12,15 Co, 13,16 They act as mediators in electron transfer from substrate to electrode materials, and the most important feature of the chemically modified electrodes (CMEs), are the electrocatalysis of slow electron transfer reactions. The MEs enhance the rate of electron transfer by reducing the over potential associated with a reaction, therefore such electrocatalysis enables a high current density (i.e.…”