Record Display for the EPA National Library Catalog

RECORD NUMBER: 572 OF 1241

OLS Field Name OLS Field Data
Main Title Hydrogen Peroxide Decay in Waters with Suspended Soils: Evidence for Biologically Mediated Processes.
Author Cooper, W. J. ; Zepp, R. G. ;
CORP Author Environmental Research Lab., Athens, GA. ;Florida International Univ., Miami. Drinking Water Research Center.
Publisher c1990
Year Published 1990
Report Number EPA/600/J-90/107;
Stock Number PB90-264714
Additional Subjects Hydrogen peroxide ; Biodeterioration ; Suspended sediments ; Fresh water ; Reaction kinetics ; Mass spectroscopy ; Catalysis ; Chemical composition ; Particle size ; Photochemical reactions ; Biochemistry ; Reprints ; Organic matter
Holdings
Library Call Number Additional Info Location Last
Modified
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Status
NTIS  PB90-264714 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 12/03/1990
Collation 8p
Abstract
Hydrogen peroxide decay studies have been conducted in suspensions of several well-characterized soils and in natural water samples. Kinetic and product studies indicated that the decay was biologically mediated and could be described by psuedo first-order rate expressions. At an initial H2O2 concentration of 0.5 uM, the hydrogen peroxide half-life varied from 1 to 8 h. The decay was inhibited by thermal and chemical sterilization of the soils. Peroxidase activity was inferred in several natural water samples, where the suspended particles catalyzed the oxidation of p-anisidine by hydrogen peroxide. The 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.