A kinetic study of the early steps in the oxidation of chlorophenols by hydrogen peroxide catalyzed by a water-soluble iron(iii) porphyrinElectronic supplementary information (ESI) available: figures providing additional data on the catalytic oxidation of TCP, as well as the calibration curve for the chloride ion selective electrode. See http://www.rsc.org/suppdata/nj/b4/b400482e/

2004 ◽  
Vol 28 (7) ◽  
pp. 847 ◽  
Author(s):  
G�bor Lente ◽  
James H. Espenson
Keyword(s):  
Hydrogen Peroxide ◽  
Kinetic Study ◽  
Catalytic Oxidation ◽  
Calibration Curve ◽  
Additional Data ◽  
Chloride Ion ◽  
Water Soluble ◽  
Supplementary Information ◽  
Selective Electrode ◽  
Soluble Iron

Kinetic Potentiometric Determination of Peroxidase in Plants, Using Fluoride-Selective Electrode

1986 ◽  
Vol 69 (6) ◽  
pp. 1006-1008
Author(s):  
Helen D Skaltsa ◽  
Michael A Koupparis ◽  
Skevos M Philianos
Keyword(s):  
Hydrogen Peroxide ◽  
Medicinal Plants ◽  
Plant Extracts ◽  
Peroxidase Activity ◽  
Calibration Curve ◽  
Potentiometric Method ◽  
Fluoride Ion ◽  
Selective Electrode ◽  
Fluoride Ion Selective Electrode

Abstract A kinetic potentiometric method is described for the determination of peroxidases in vegetables and medicinal plants. It is based on the measurement of fluoride ion liberation rate from the peroxidase-catalyzed reaction of p-fluorophenol with hydrogen peroxide, sing the fluoride ion-selective electrode. The calibration curve is linear in the range 1-10 mU/mL with a precision of 1-3%. No interference was found from plant extracts, and recoveries were 97-107% (mean 100.9%). The method is rapid (2 min per measurement) and applicable to highly colored or turbid solutions. The method was applied for the determination of peroxidase activity in various plants of Greek flora. Plants of Leguminosae were found to be the richest source.

The denitration pathway of p-nitrophenol in the hydrogen peroxide catalytic oxidation with an FeIII-resin catalyst

2012 ◽  
Vol 65 (5) ◽  
pp. 845-858 ◽  
Author(s):  
Rey-May Liou
Keyword(s):  
Hydrogen Peroxide ◽  
Liquid Phase ◽  
Kinetic Study ◽  
Catalytic Oxidation ◽  
Degradation Rate ◽  
Strong Influence ◽  
Reaction Conditions ◽  
Resin Catalyst ◽  
Factors Influencing ◽  
Oxidant Concentration

The liquid-phase hydrogen peroxide catalytic oxidation of p-nitrophenol was performed with an FeIII-resin catalyst. The conversion and mineralization of p-nitrophenol was effectively achieved at mild reaction conditions with the FeIII-resin catalyst. It was found that the oxidant concentration, pH, and temperature dominated the degradation rate of p-nitrophenol. The denitration pathway of p-nitrophenol was proposed, in which the concentration of H2O2 and temperature showed strong influence on the conversion of nitrite to nitrate. To study the factors influencing the denitration of p-nitrophenol, a comparable kinetic study was attempted to know the possible denitration pathway of p-nitrophenol. The results of this investigation indicated that denitration was the possible step occurring with the decomposition of p-nitrophenol.

Sign in / Sign up

Export Citation Format

Share Document