Abstract
Sediment and seawater samples were taken in a sewage affected channel in Blanca Bay, Argentina. Protein content, ‘humic substances’ and silt-clay percentage were evaluated in the sediments; NH 4 +, PO 4 3− and ‘dissolved organic matter’ in seawater. A highly significant correlation ( r=0.747, n=59) was obtained for the relation between protein and % silt-clay. The ‘humic substances’ distribution depends more on the distance from the outfall than does the protein content, probably because of the important relation of the latter with the sediment particle size. The dissolved components showed a dilution pattern similar to that of a contaminant plume in a moving water mass, reaching normal values at 1700 m from the outfall.
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