Ultrasonic real-time monitoring of the process of decomposition of hydrogen peroxide in aqueous solutions

Abstract

Ultrasonic monitoring of decomposition of hydrogen peroxide catalyzed by metal surfaces.

Ultrasonic Monitoring of Biocatalysis in Solutions and Complex Dispersions

“…Therefore, polypeptides with intermediate degree of hydrolysis are nearly absent in the reaction mixture [36,37]. Figure 4B,C show good correlation between the ultrasonic reaction progress curves (parameter ∆a r obtained by Method 1) and the progress curves obtained with a discontinuous technique for hydrolysis of lactose and decomposition of hydrogen peroxide [5,8]. The results of the application of Method 2 are outlined in Table 1.…”

“…Reference [5] with permission from The Royal Society of Chemistry. The linear fit parameters were obtained by fitting of the dependence of 2 2 H O a on concentration of H2O2, which provides slightly better extrapolation of 2 2 H O a to infinite dilution than the direct fitting of ultrasonic velocity vs. concentration utilized in [5].…”

“…The linear fit parameters were obtained by fitting of the dependence of 2 2 H O a on concentration of H2O2, which provides slightly better extrapolation of 2 2 H O a to infinite dilution than the direct fitting of ultrasonic velocity vs. concentration utilized in [5]. Red diamonds: hydrolysis of lactose in infant milk and in water [8].…”

“…No significant frequency dependence was detected within the analyzed frequency range. The ultrasonic velocity was converted to the concentration of hydrogen peroxide in the mixture using equation equivalent to Equation (9) as described earlier [5].…”

“…A variety of 'electromagnetic' spectroscopic techniques such as infrared, Raman, fluorescence, and UV-Vis, can provide real-time data on concentrations of reactant and product under varying reaction conditions [1,[3][4][5][6][7]. However, the efficiency of these techniques is dependent on the optical transparency of medium and can be affected by light scattering in dispersions.…”