Release of chlorocatechols from a contaminated sediment

Article Abstract:

The release of chlorocatechols from a contaminated sediment core is investigated. Experiments are conducted wherein a naturally contaminated sediment specimen is mixed with an organic medium under anaerobic conditions. The mixture's hydrogen ion content (pH) and salinity are then measured to determine their effects on the release of chlorocatechols. Results show that the presence of an organic medium enhances the release of chlorocatechols which could lead to serious environmental consequences.

Environmental aspects, Water pollution, Hazardous wastes

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Chlorobiphenyls: model compounds for metabolism in food chain organisms and their potential use as ecotoxicological stress indicators by application of the metabolic slope concept

Article Abstract:

The similarities and differences in composition of chlorobiphenyls (CBs) in water and members of marine food chains was examined using a model. Using either the presence or absence of vicinal H-atoms and structure-activity relations for biotransformation as a basis, four different CB groups were identified and linearly plotted. The results indicated the presence of relative metabolic efficiencies of cytochrome P-450 isozymes.

Biphenyl compounds, Biphenyls (Class of compounds), Marine fauna, Marine animals

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