Accession Number : ADP007784

Title :   Literature Review of Sediment Oxygen Demand and Nutrient Flux Measurement Techniques,

Corporate Author : STATE UNIV OF NEW YORK AT STONY BROOK MARINE SCIENCES RESEARCH CENTER

Personal Author(s) : VIGIL, Heidi

Report Date : JUN 1992

Pagination or Media Count : 29

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).

Descriptors :   *CHEMICAL REACTIONS, *NUTRIENTS, *OXYGEN, *SEDIMENTS, *SOLUTES, *FLUX(RATE), ATTENTION, CHEMICALS, DECOMPOSITION, ENERGY, FLUIDS, FREE ENERGY, INTERFACES, OXIDATION, OXIDATION REDUCTION REACTIONS, POLLUTANTS, RATES, REACTION KINETICS, REDUCTION, SOLID PHASES, SOLIDS, TEMPERATURE, TRANSFER, WATER, PH FACTOR, FRESH WATER, OXIDATION REDUCTION REACTIONS, ORGANIC COMPOUNDS, SYMPOSIA.

Subject Categories : Geology, Geochemistry and Mineralogy
      Physical and Dynamic Oceanography
      Physical Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE