Journal of Soils and Sediments - Protection, Risk Assessment, and Remediation

Sediment Toxicity Assessment - Rationale for effect classes

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Courtesy of Journal of Soils and Sediments - Protection, Risk Assessment, and Remediation

The main challenge in the application of biotests for hazard assessment of sediments is a transparent interpretation, especially if combinations of biotests are applied and an integrated assessment of all results is wanted. For decision making, assigning results of biotesting into different classes that indicate increasing hazards can be a useful tool. In this paper we suggest an approach on how to set up a siteindependent classification system for sediment toxicity tests. Methods. About 250 sediment samples were collected from two rivers and evaluated. The bioassays applied are used in a standardized procedure for all samples over years. The test battery include toxicological endpoints like nematode growth and reproduction, algae growth, bacteria activity, and luminescence inhibition.

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