Test determination of hydrogen peroxide with reagent indicator stripsстатья
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:Reagent indicator paper (RIB sheets and strips) and triple laminated strips in which reagent indicator paper is supported on a polymer (RIP-Peroxide-Test) were proposed. With RIB strips, hydrogen peroxide can be determined using a photocolorimeter at 660 nm, and, with RIP-Peroxide-Test, using a color comparator or by diffuse reflection spectroscopy using a minireflectometer with a light-emitting diode (625 nm). The analytical ranges for H2O2 in water and air were found to be 0.5-20 and 1-10 mg/L, respectively; the time of analysis is 1-10 min. The minimum error of the visual test method is 40%; the relative standard deviations of photometric tests were no worse than 25% at n = 3 and P = 0.95. When specially packed and stored, RIB retains its activity for no less than three years. Test procedures were verified in the analysis of medicinal preparations, organic solvents, and in controlling the sterilization of solid samples in a chamber with hydrogen peroxide.