Scopul nostru este sprijinirea şi promovarea cercetării ştiinţifice şi facilitarea comunicării între cercetătorii români din întreaga lume.
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.
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