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Accession Number:
ADP007784
Title:
Literature Review of Sediment Oxygen Demand and Nutrient Flux Measurement Techniques,
Descriptive Note:
Corporate Author:
STATE UNIV OF NEW YORK AT STONY BROOK MARINE SCIENCES RESEARCH CENTER
Report Date:
1992-06-01
Pagination or Media Count:
29.0
Abstract:
The transfer of solutes across the sediment-water interface is an important factor in describing a marine or freshwater system. Sediment oxygen demand SOD and nutrient fluxes have received a great deal of attention in the last several years as the increase in pollutants has become a major problem. Most of the chemical reactions taking place in the sediments are associated with the decomposition of organic matter by microbes, as well as CaCO3 and SiO2-nH2O Berner 1976. The reaction rate is highly dependent on the microbial activity of the sediment and, therefore, also dependent on temperature. The order and extent of the oxidation-reduction reactions are dependent on the concentrations of the reactants and the free energy available. The geochemical reaction in the sediments affects the pH and oxidation-reduction potential and can deplete or increase the reactants or products in both the fluid and solid phases of a deposit e.g. Ben-Yaakov 1973 Goldhaber and Kaplan 1974.
Distribution Statement:
APPROVED FOR PUBLIC RELEASE
