DEVELOPMENT OF AN ALGAL BIOSENSOR FOR TOXICITY ASSESSMENT OF URBAN WET WEATHER EFFLUENTS

Yannis Ferro (1) , Claude Durrieu (1)

1 Équipe 5 - Impacts des Polluants sur les Écosystèmes

Stormwater runoff from urban areas generates various pollutants (suspended solids, heavy metals, polycyclic aromatic hydrocarbons, nutrients...) This cocktail of pollutants can contribute to adverse quality of receiving water bodies (urban streams, ground water). In order to preserve aquatic ecosystems it is therefore necessary to evaluate quality and toxicity of wet weather effluents. In this work dry and wet weather effluents were sampled and different ecotoxicological assays based on enzymatic activity measurementwere performed. Results of bioassays with free algae were compared to results obtained with a conductometric biosensor. Differences of results between both toxicity evaluation methods are linked to the chemical composition of effluents and the sensibility of the chosen test. This study shows the ability of the sensor to evaluate toxicity of urban effluents and its interest in environmental pollution monitoring.

Mots clés: biosensors; environmental monitoring; storm water

Domaines: Ecotoxicologie; Ingénierie de l'environnement

Yannis Ferro, Claude Durrieu. DEVELOPMENT OF AN ALGAL BIOSENSOR FOR TOXICITY ASSESSMENT OF URBAN WET WEATHER EFFLUENTS. SIDISA 2012 Sustainable Technology for Environmental Protection, Jun 2012, Milan [Politecnico di Milano], Italy. [ID 829] page 178. ⟨hal-00763753⟩