Pollution of sediments

Many metals and organic substances have an affinity for organic matter or mineral particles. Sediments thus provide a suitable medium for the accumulation of contaminants from aqueous sources and atmospheric deposition. The contaminant level is often higher than in the overlying body of water.

1. Certain elements, often associated with pollution, tend to occur naturally in sediments and their concentrations reflect the geology of the areas (as in the case of lake basin).

1. Marine pollution
2. Land pollution

1. Accumulation of pollutants in marine wildlife
2. Accumulation of pollutants in freshwater wildlife

1. River pollution
2. Lake pollution

1. Toxicity
2. Pollution
3. Contamination