Effects of five nanomaterials on Gymnodinium breve

ENVR 77

Zhen-yu Wang, wang0628@ouc.edu.cn1, Zhi-jia Tian1, Feng-min Li, lfm01@ouc.edu.cn1, Dong-mei Gao, gaodongmei2002@yahoo.com.cn1, and Baoshan Xing, bx@pssci.umass.edu2. (1) College of Environmental Science and Engineering, Ocean University of China, Songling Road 238#, Qingdao, 266100, China, (2) Department of Plant, Soil and Insect Sciences, University of Massachusetts, 80 Campus Center Way, Stockbridge Hall, Amherst, MA 01003
Nanomaterials are increasingly being used in industrial applications as well as scientific research. Due to their potentially wide use in the future, the ecological impact of engineered nanomaterials needs to be addressed. In this research, we investigated the effect of five types of nanomaterials on the growth of G. breve. Nano scale TiO2 (anatase and rutile) and Al2O3 (γ phase) strongly inhibited the growth of G. breve. The median effective concentration (EC50) values were 174 mg/L for TiO2 (anatase), 229 mg/L for TiO2 (rutile) and 676 mg/L for Al2O3 (γ phase). The inhibition of Al nanoparticles was lower than the above three. Nano Al2O3 (α phase) did not have significant inhibition. These data show that mineral type, phase and size of metal-based nanoparticles are important factors affecting their toxicity.
 

Environmental Behavior and Fate of Manufactured Nanomaterials
1:30 PM-5:30 PM, Monday, April 7, 2008 Morial Convention Center -- Rm. 235, Oral

Division of Environmental Chemistry

The 235th ACS National Meeting, New Orleans, LA, April 6-10, 2008