Ecotoxicological studies to control hazardous substances priority for environmental risk assessment (toxicity bioassays)

Abstract

The main objective of the project was to establish the toxicity of various hazardous chemicals and to assess their harmful effects in the environment, throughout acute, subacute and chronic bioassays performed on aquatic organisms. In this regard, acute and chronic toxicity tests have been used to establish the median lethal concentration - CL50 and the maximum admissible concentration (MATC) in water of priority hazardous substances (herbicides class: atrazine, monolinuron and organophosphorus insecticides: mevinphos, trichlorphon). Moreover, an added-value on surface water quality and industrial effluents regulations was brought based on the LC50 and MATC values.