D10: Impact of Contaminants - Hydromod
D10: Impact of Contaminants - Hydromod
D10: Impact of Contaminants - Hydromod
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Integrated Water Resource Management for Important Deep European Lakes and their Catchment Areas<br />
EUROLAKES<br />
<strong>D10</strong>: <strong>Impact</strong> <strong>of</strong> <strong>Contaminants</strong><br />
FP5_Contract No.: EVK1-CT1999-00004<br />
Version: 4.0<br />
Date: 25/07/01<br />
File: <strong>D10</strong>-vers.4.0.doc<br />
Page 39 <strong>of</strong> 136<br />
6.5 ECOTOXICOLOGICAL RISK ASSESSMENT<br />
The word risk coming from the insurance industry means the occurrence probability <strong>of</strong> a<br />
damage event. A modern risk assessment <strong>of</strong> chemical substances not only have to<br />
take account on humans but also on the environment. The aim <strong>of</strong> the ecotoxicological<br />
risk assessment is the estimation <strong>of</strong> the hazardous impact to the ecosystem regarding<br />
the toxicological data <strong>of</strong> chemicals and the exposition. In doing so, both, the effects on<br />
organisms and populations and the pollution <strong>of</strong> environmental compartments like the<br />
ground water have to be estimated and evaluated [FENT 1998].<br />
Exposition assessment<br />
Use<br />
Amount <strong>of</strong> input<br />
Characteristic <strong>of</strong> input<br />
Behaviour in the environment<br />
— Spread<br />
— Degradation<br />
— Metabolism<br />
Hazard evaluation<br />
Risk analysis<br />
Risk assessment<br />
Effect evaluation<br />
Ecotoxicological effects<br />
— Acute toxicity<br />
— Chronic toxicity<br />
— Toxicity to populations and ecosystem<br />
— bioaccumulation<br />
Occurrence probability<br />
Figure 6-2: hazardous evaluation <strong>of</strong> substances [FENT 1998]
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