Autori: Veysel Demir, Mehmet Ates, Zikri Arslan, Mustafa Camas, Fatih Celik, Corneliu Bogatu, Şafak Seyhaneyildiz Can

Editorial: Erin Bennett, Springer US, Bulletin of Environmental Contamination and Toxicology, 95(6), p.752-757, 2015.

Rezumat:

Bulletin of Environmental Contamination and Toxicology

December 2015, Volume 95, Issue 6, pp 752–757

The effects of alpha-iron oxide (α-Fe₂O₃) and gamma-iron oxide (γ-Fe₂O₃) nanoparticles (NPs) on marine microalgae species (Nannochloropsis sp. and Isochrysis sp.) were investigated in this study. Both Fe₂O₃ NPs covered the surface of algae with the agglomerates of the nanoparticles. This form of physical NP toxicity significantly decreased the sizes of phytoplankton. Both NPs were toxic to the tested algal species, while α-Fe₂O₃ showed less toxicity than γ-Fe₂O₃ NPs for both algal species. A comparative analysis of growth data of the two algal species treated with α-Fe₂O₃ or γ-Fe₂O₃ NPs revealed that Isochrysis sp. are more sensitive than Nannochloropsis sp. Toxicity of these widely used NPs to primary producers forming the base of the food chain in aquatic environments might result in widespread adverse effects on aquatic environmental health.

Keywords: Phytoplankton, Alpha and gamma-iron oxide, nanoparticles,  Nanotoxicity, Marine

URL: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4651754/