Hydrogen Peroxide Dynamics in an Agricultural Headwater Stream: Evidence for Significant Biological Production

Taylor Dixon & Bettina Voelker
Hydrogen peroxide (H2O2) is known to play key roles in aquatic systems, including metal redox cycling and degradation of organic matter into bioavailable forms. Detailed knowledge of the cycling of H2O2 in natural waters thus fosters the understanding of important aquatic biogeochemical processes. Although biological production of H2O2 has been observed in culture studies, the significance of this process to the H2O2 budget in freshwater systems remains unknown. In this study, isotopically-labeled H2O2 (H218O2) was...
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