Iron photoreduction and oxidation in an acidic mountain stream

By: , and 



In a small mountain stream in Colorado that receives acidic mine drainage, photoreduction of ferric iron results in a well-defined increase in dissolved ferrous iron during the day. To quantify this process, an instream injection of a conservative tracer was used to measure discharge at the time that each sample was collected. Daytime production of ferrous iron by photoreduction was almost four times as great as nighttime oxidation of ferrous iron. The photoreduction process probably involves dissolved or colloidal ferric iron species and limited interaction with organic species because concentrations of organic carbon are low in this stream.

Publication type Article
Publication Subtype Journal Article
Title Iron photoreduction and oxidation in an acidic mountain stream
Series title Science
DOI 10.1126/science.240.4852.637
Volume 240
Issue 4852
Year Published 1988
Language English
Publisher American Association for the Advancement of Science
Contributing office(s) Toxic Substances Hydrology Program
Description 4 p.
First page 637
Last page 640
Google Analytic Metrics Metrics page
Additional publication details