Pollution of sediments
Other Names: Contamination of sediments by toxic substances
Nature: 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.
Counter Claim: 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).
Problem Type: E: Emanations of other problems
Date of last update 01.01.2000 – 00:00 CET