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Environmental Health - Toxic Substances


U.S. Geological Survey Toxic Substances Hydrology Program--Proceedings of the Technical Meeting, Colorado Springs, Colorado, September 20-24, 1993, Water-Resources Investigations Report 94-4015

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An Equilibrium-Based Simulation Model for Reactive Solute Transport in Small Streams


Robert L. Runkel (University of Colorado, Center for Advanced Decision Support in Water and Environmental Systems (CADSWES)), Kenneth E. Bencala (USGS, Menlo Park, CA) and Robert E. Broshears (USGS, Lakewood, CO)


A reactive solute transport model that considers the physical and aphysical processes affecting solutes in small streams is presented. The model is developed by coupling an existing solute transport code with a model of chemical equilibria. The resultant model considers a variety of physical and chemical processes including advection, dispersion, transient storage, precipitation/dissolution, sorption/desorption and the deposition of particulate metal oxides.

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