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HYDROGEN PEROXIDE DECAY IN WATERS WITH SUSPENDED SOILS: EVIDENCE FOR BIOLOGICALLY MEDIATED PROCESSES
Citation:
Cooper, W. AND R. Zepp. HYDROGEN PEROXIDE DECAY IN WATERS WITH SUSPENDED SOILS: EVIDENCE FOR BIOLOGICALLY MEDIATED PROCESSES. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/J-90/107 (NTIS PB90264714), 1990.
Description:
Hydrogen peroxide decay studies have been conducted in suspensions of several well-characterized soils and in natural water samples. inetic and product studies indicated that the decay was biologically mediated and could be described by psuedo first-order rate expressions. t an initial H2O2 concentration of 0.5 uM, the hydrogen peroxide half-life varied from 1 to 8 h. he decay was inhibited by thermal and chemical sterilization of the soils. eroxidase activity was inferred in several natural water samples, where the suspended particles catalyzed the oxidation of p-anisidine by hydrogen peroxide. he mass spectrum of the major reaction product indicated that it was the dimer, possibly benzoquinone-4-methoxyanil, a product that also was observed from the horseradish peroxidase-catalyzed oxidation of p-anisidine by hydrogen peroxide.
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HYDROGEN PEROXIDE DECAY IN WATERS WITH SUSPENDED SOILS: EVIDENCE FOR BIOLOGICALLY MEDIATED PROCESSES