Français
4. Impact assessment
-
One of the aims of ecotoxicity testing is to identify the effect(s) of concern of a substance on the environmental compartment concerned, and to determine the concentration below which this substance should no longer have an undesirable effect on organisms in that compartment. This concentration, known as the Predicted No Effect Concentration (PNEC), is one of the main parameters used in risk assessment methods set up at European and international (OECD) level.
The PNEC is obtained by applying an assessment factor to the values derived from tests carried out on organisms in the compartment concerned (e.g. to the CE 50 , CL 50 or NOEC). The assessment factor accounts for the degree of uncertainty that results from extrapolating the results of tests carried...
The Ultimate Scientific and Technical Reference
This article is included in
Safety and risk management
This offer includes:
Knowledge Base
Updated and enriched with articles validated by our scientific committees
Services
A set of exclusive tools to complement the resources
Practical Path
Operational and didactic, to guarantee the acquisition of transversal skills
Doc & Quiz
Interactive articles with quizzes, for constructive reading
Impact assessment
European Union ranking
Bibliography
GLOSSARY
Aerosol: aeronomic term for any substance suspended in the atmosphere in liquid or particulate form.
Clay-humic (complex): aggregate of clay particles and humic acids (degradation products of plant organic matter in the soil).
AFNOR: Association Française de NORmalisation.
Algistatic: inhibits the development of algae.
Anthropic:...
The Ultimate Scientific and Technical Reference
