Monitoring of high hydrogen peroxide concentrations by voltammetryc

Abstract

Different electrode systems have been investigated as possible voltammetric sensors for in-line measurements and monitoring of high concentrations of hydrogen peroxide (up to 30 g/l) as used in alkaline textile bleaching liquor. With most of the tested electrodes insurmountable ohmic potential losses are encountered, resulting in a saturation of the sensor output current. Taking accuracy and stability with time into consideration promising results are obtained with a rotating glassy carbon electrode, an ultra-micro platinum electrode and stationary titanium and zirconium electrodes, in decreasing order of preference when selectivity versus the many possible additives used in industry are not yet taken into account.

Sensor for Hydrogen Peroxide Based on Prussian Blue Modified Electrode: Improvement of the Operational Stability

“…[11][12][13][14] Many analytical techniques are available to determine H2O2, including fluorometry, 15 chemiluminescence, 16 photometry 17 and voltammetry. 18 Among applications, the determination of hydrogen peroxide has been realized in matrices such as foods [19][20][21] and pharmaceutics [22][23][24] and in the environment. [25][26][27] In recent years, one of the most widely used electroanalytical methods relies on the use of peroxidase.…”

An Efficient Amperometric Sensor for Hydrogen Peroxide by Using a Carbon Paste Electrode Modified with Cobalt Impregnated Zeolite

“…At high concentrations, hydrogen peroxide causes irritation to the eyes and skin and affects human health [11]. Further, the detection of hydrogen peroxide is an important task in many biological, medical and clinical studies [12,13]. Many spectroscopic methods such as fluorimetry [14,15], fiber-optic device [16,17], chemiluminescence [18][19][20], and various electrochemical [21][22][23][24][25][26] methods have been developed for detection of hydrogen peroxide.…”

Electrocatalytic Oxidation of Dithionite at a Cobalt(II)tetrasulfonated Phthalocyanine and 5,10,15,20‐Tetrakis‐(4‐sulfonatophenyl)porphyrin Cobalt(II) Modified Gold Electrode in Alkaline Solution

“…They focussed mainly on voltammetric and amperometric detection of these components using rotating disc [3 -9], ultramicro [5] and wall-jet electrodes positioned in flow through cells [10]. To support the insight in the analytical determination of the concentration of the above mentioned chemicals they also investigated the mechanism [11 -13], kinetics [11 -14] and reagent transport properties [8, 1 -14] of the oxidation/reduction reactions used for their analytical detection.…”