TITLE:
Photosynthetic Toxicity and Oxidative Damage Induced by nano-Fe3O4 on Chlorella vulgaris in Aquatic Environment
AUTHORS:
Xiaoxiao Chen, Xing Zhu, Rui Li, Hanchao Yao, Zhisong Lu, Xu Yang
KEYWORDS:
Nano-Fe3O4; Chlorella vulgaris; Photosynthetic Toxicity; Oxidative Damage; Ecotoxicity
JOURNAL NAME:
Open Journal of Ecology,
Vol.2 No.1,
February
29,
2012
ABSTRACT: With the rapid development of nanotechnology and widespread use of nanoproducts, concerns have arisen regarding the ecotoxicity of these materials. In this paper, the photosynthetic toxicity and oxidative damage induced by nano Fe3O4 on a model organism, Chlorella vulgaris (C. vulgaris) in aquatic environment, were studied. The results showed that Nano-Fe3O4 was toxic to C. vulgaris and affected its content of chlorophyll a, malonaldehyde and glutathione, CO2 absorption, net photosynthetic rate, superoxide dismutase activity and inhibition of hydroxyl radical generation. At higher concentrations, compared with the control group, the toxicity of nano-Fe3O4 was significantly different. It suggested that nano-Fe3O4 is ecotoxic to C. vulgaris in aquatic environment.