Figure 2

H2O2 and MDA contents of S. obliquus exposed to (A) CNTs, (B) nano Fe2O3 and (C) nano MgO for 48 h. Antioxidants enzyme activities (CAT, SOD or POD) of S. obliquus exposed to (D) CNTs, (E) nano Fe2O3 and (F) nano MgO for 48 h. Significant difference (p < 0.05) is indicated by different letters above the columns between treatments.