Synthesis and characterization of TiO2 nanoparticle and study of its impact on aquatic organism

Abstract

The rapid development of nanotechnology or nanotoxicology is stimulating research on the potential health hazards and environmental impacts of manufactured nanomaterials (MNMs) and nanoparticles (NPs). This paper focused on the identification of Daphnia pulex from the environment and TiO₂ nanoparticles synthesis, characterization and the 24 h acute toxicity of water suspensions of TiO₂ NPs to Daphnia pulex, using mortality as toxicological endpoints. The results show that the acute toxicities of 0, 5, 50, 100, 150, 200, 210, 220, 225 and 230 ppm are dose dependent or concentration level. The Lethal Concentration (LC50) values for mortality 24h is observed at 218.79ppm. D. pulex were found to ingest nanoparticles from the test solutions through feeding and their behavioral and morphological effects indicates that the potential ecotoxicological and environmental health of these NPs cannot be ignored.