Spectrophotometric Determination of Hydrogen Peroxide by a Hydroquinone-Aniline System Catalyzed by Molybdate

Abstract

In this system hydroquinone is oxidized to pbenzoquinone by H2O2. 2 aniline are added, in successive stages, to pbenzoquinone, to yield the disubstituted quinone as the final product. 20 The UV-VIS spectrum of the product in aqueous solution presented in Figure 1. It is obvious that a strong absorption peak with a maximum at 550 nm is formed. In conclusion, the new method based on the addition product formation has been demonstrated to be reliable and with acceptable sensitivity for the determination of hydrogen peroxide in verities of product.