|Title||Hematite Nanoparticles: synthesis, characterization and aquatic ecotoxicity effects [Central Imaging and Flow Cytometry Facility]|
|Publication Type||Journal Article|
|Year of Publication||2019|
|Authors||Yoganandham SThodhal, Ravindranath* RRajasree S, Sathyamoorthy G, Renuka RRajan, Lakshminarayanan A|
|Journal||Research Journal of Biotechnology|
Iron oxide nanoparticles have been investigated recently for their useful applications in numerous biomedical areas, in environmental remediation and in different industrial applications. In any case, additional risks have been identified with the release of nanoparticles into the environment. In the present study the toxicity of hematite nanoparticles to marine algae, Chlorella vulgaris was studied with focus on oxidative stress and cytotoxicity analysis. The synthesized hematite nanoparticles are in the range of 26-50 nm. Result showed that Chlorella vulgaris growth reduced with increasing concentrations. The nanoparticles induced oxidative stress was the main toxic mechanism. The nanoparticles and Chlorella vulgaris cell physical interaction also contributed to the nanotoxicity. Field Emission Scanning Electron Microscope shows the morphological changes and cell damage. In 24h, treatment mortality was 20 – 70 % and LC50 value for 24h was 393.60 mg/L. Toxicity study on copepod showed mortality increased from 20- 100% for 48hr and LC50 value for 44h was 221.34 mg/L.