EU Water Framework-Directive Priority Contaminants in Norwegian Freshwater Fish
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Priority substances under EU water framework directive, and other substances of concern, were analyzed in fish liver sampled from 13 Norwegian lakes.
The concentration of different contaminants in liver tissue may differ from muscle tissue because they have various chemical properties.
EU has established Environmental quality standard (EQS) for prioritized environmental contaminants and the EQSs are given in wet weight values. The EQSs are established to prevent the negative effects in the aquatic ecosystem (ensuring protection for the most sensitive species).
An EQS has been defined as “the concentration of a particular pollutant or group of pollutants in water, sediment or biota that should not be exceeded in order to protect human health and the environment”.