A Comparative Test on the Sensitivity of Freshwater and Marine Microalgae to Benzo-Sulfonamides, -Thiazoles and -Triazoles

The evaluation of the ecotoxicological effects water pollutants is performed by using different aquatic organisms. seven compounds belonging to a class widespread contaminants, benzo-fused nitrogen heterocycles, on group simple organisms employed in reference ISO tests quality (unicellular algae and luminescent bacteria) have been assessed ascertain their suitability revealing contamination levels water, wastewater, sediments samples. Representative benzotriazoles, benzothiazoles, benzenesulfonamides, were tested at concentration ranging from 0.01 100 mg L?1. In particular, our work was focused long-term effects, for which little information up now available. Species-specific sensitivity any whole family not observed. On average, strongest growth rate inhibition values expressed freshwater Raphidocelis subcapitata marine Phaeodactylum tricornutum algae. R. only organism affected most lowest concentrations. bioluminescent bacterium Vibrio fisheri gave completely results, further underlining need an appropriate selection best biosensors be biotoxicological studies.