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Mind
absolute or quantitative environmental risk

a quantitaive value characterising risk. The risk of chemical substances is characterised by the Risk Quotient RQ the ratio of their Predicted Environmnetal Concentration PEC and their Predicted No Effect Concentration PNEC.

The level of harm according to the risk value is the following:

RQ

Level or harm

<0,001

negligable

0,001-0,1

low

0,1-1

moderate

1-10

high

>10

very high

environmental risk
environmental risk management
environmental risk reduction