Spectrophotometric Determination of Hydrogen Peroxide in Water and Cream Samples

Abstract

A simple, rapid and sensitive spectrophotometric method is described for the determination of hydrogen peroxide using toluidine blue as a reagent. The proposed method is based on the liberation of iodine in acidic medium equivalent to the amount of hydrogen peroxide present. The liberated iodine bleaches the blue color of toluidine blue and is measured at 628 nm. The decrease in absorbance is directly proportional to hydrogen peroxide concentration and obeys Beer's law in the range 0.2 x 10(-6) -14 x 10(-6) mol L(-1). The molar absorptivity, sandel's sensitivity, detection limit and quantitation limit of the method were found to be 1.82 x 10(4) L mol(-1) cm(-1), 2.01 x 10(-9) mol L(-1), 1.41 x 10(-6) mol L(-1) and 4.28 x 10(-6) mol L(-1) respectively. The results of analysis of the proposed method are compared favorably with those from a reference method.

Enhanced electron transfer mediated detection of hydrogen peroxide using a silver nanoparticle–reduced graphene oxide–polyaniline fabricated electrochemical sensor

“…5 Fluorimetry, 6 electrochemical 7 and chemiluminescence 8 have been employed for the determination of H 2 O 2 . Among these, the electrochemical method offers a rapid and simple approach for the sensitive detection of H 2 O 2 .…”

Headspace Gas Chromatographic Method for the Determination of Hydrogen Peroxide Residues in Bleaching Effluent

“…A number of analytical methods have been reported for the quantification of hydrogen peroxide concentrations, such as by titration (Kieber and Helz 1986;Klassen et al 1994;Reichert et al 1939;Schumb et al 1955), spectrophotometric analysis (Chai et al 2004;Sellers 1980;Sunil and Narayana, 2008;Zhang et al 2013), chemiluminescent analysis (Hu et al 2007;Lu et al 2009), fluorometric analysis (Hwang and Dasgupta 1986;Luo et al 2009), and electrochemical analysis (Frew et al 1986;Sato et al 2008). Most of the widely used analytical methods are titration-based, and these are very popular, especially in the pulp and paper industry; however, titrimetric methods are prone to interference by extraneous substances and can result in significant experimental error.…”

A Prussian blue-based amperometric sensor for the determination of hydrogen peroxide residues in milk

“…If the subsequent washing and drying process is incomplete, the foodstuff could be contaminated with H 2 O 2 residues, which would be irritative to the skin and affect human health. Thus, the determination of H 2 O 2 is of great importance in food industry [6][7][8].…”