Small-scale Freshwater Toxicity Investigations

pp 281-304

The pT-Method as a Hazard Assessment Scheme for sediments and dredged material

  • Falk KrebsAffiliated withGerman Federal Institute of Hydrology (BfG)

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This simple pT-hazard assessment system designed to determine sediment quality for the management of freshwater and marine ecosystems was developed in the German Federal Institute of Hydrology (BfG). While sediment categorization into several toxicity classes is supported by scientific methodology, evaluation and routine application are based on a convention outlined in specific guidelines. The rationale defining sediment categories based on ecotoxicological principles (i.e., via application of a toxicity test battery) is still very much in its infancy. As the pT-database increases and toxicity test batteries are optimized, sediment toxicity categories will likely be better defined to the benefit of management practices for the protection of inland and coastal waters.