Electrocatalytic Oxidation of Nitric Oxide at Carbon Paste Electrode Modified with Chromium (III) Oxide
Journal Title: JOURNAL OF ADVANCES IN CHEMISTRY - Year 2013, Vol 5, Issue 3
Abstract
Chromium (III) oxide was used as a bulk mediator in carbon paste electrodes to improve the better performance of the carbon electrodes for the detection of nitric oxide in comparison with unmodified electrodes. The reaction mechanism of the electrocatalytic oxidation of NO at the modified electrode was studied using cyclic voltammetry and differential pulse voltammetry. The chemical sensor could be operated under physiological conditions (pH 7.5, 0.1 M phosphate buffer), with an operating potential of 750 mV (vs. Ag/AgCl), in hydrodynamic amperometry. The amperometric response of the sensor showed good linearity up to 200 mmol/L with a detection limit (3σ) of 0.69 mmol/L. The effect of the interferent nitrite was not fatal and could be eliminated by the use of the standard addition method. The new chemical sensor seems also promising to detect NO in car exhaust fumes.
Authors and Affiliations
Liridon S. Berisha, Kurt Kalcher, Arsim Maloku, Eduard Andoni, Tahir Arbneshi
Measurement Natural Radioactivity in Soil Samples from Important historical locals in Alnajaf Alashraf city, Iraq.
Al-Najaf Al-Ashraf city one of the most important ,oldest, historical and religious cities in Iraqi country which includes hundreds of holy shrines and historical mosques which over the built hundreds of years. The natur...
Thermodynamic Study of Light Organic Molecules Adsorption onto ZK-4 Zeolite
In this work, we were interested to the interactions of various light gases (critical temperature not exceeding 31 °C) with the zeolite ZK-4 and its varieties exchanged at temperatures close to ambient. The interest fir...
Synthesis ,Characterization and invitro evaluation of anticancer activity of new hydroxamicacid basedHDACi containing substituted thaizolesas a cap linking moiety.
The present study was undertaken to synthesize, characterize and evaluate the anticancer activity of new derivatives of hydroxamate –based HDACi having S-subistituted-5-amino1,3,4thadiazole as a cap l...
Determination of Physicochemical Characteristics of Early Rain Water in a Rain Forest Region, Owerri, Nigeria.
Analysis of physicochemical characteristics of samples of rain water collected from rain gauges at two sampling stations at Orji and Umuchima-Ihiagwa in Owerri, Nigeria revealed that rain water from sampling station, Orj...
Concrete Incorporated With Silica Fume And Manufactured Sand Under Acidic Nature
Now a dayAcid attack is growing threat to concrete structures. Using some alternate materials as partial replacement of cement and sand in the concrete is an important factor that enhances the performance of concrete in...